Upload
vuongthuy
View
244
Download
3
Embed Size (px)
Citation preview
2004
KEY STAGE
3LEVELS
3–7
Sc
2004
Science tests
Mark scheme forPapers 1 and 2
department for
education and skillscreating opportunity, releasing potential, achieving excellence
2
Introduction
The test papers will be marked by external markers. The markers will follow the mark
scheme in this booklet, which is provided here to inform teachers.
This booklet includes the mark scheme for paper 1 and paper 2 in both tiers.
The structure of the mark scheme for tiers 3–6 and 5–7
The mark scheme for each question shows:
■ the teaching points from the key stage 3 programme of study;
■ the marks available for each part of the question;
■ the total marks available for the question;
■ the answer or answers expected, indicated by an asterisk;
■ additional guidance to assist markers in making professional judgements.
When a question appears in an identical form in both tiers, the answers to the question
are given only once in the mark scheme. For clarity, both question numbers are given.
The following example, from tier 3–6 paper 1 question 11 and from tier 5–7 paper 1
question 2, illustrates this.
2004 KS3 Science Mark Scheme Tiers 3–6 and 5–7 Introduction
Tier Q No3–6 115–7 2
Part Mark Answer Accept Additional guidance
a 11/2h
b 11/2k
accept ‘his heart rate or pulsewent up’accept ‘it shows his heart ratewent up’accept ‘the graph shows hisheart rate changed’accept ‘the line goes up orchanged’accept ‘the points get higher’
* his heart rate went up after he drank some cola
‘he wanted to know his heartrate before he drank his cola’is insufficient as this is givenin the question
accept ‘to get a reading ofheart rate when relaxed’accept ‘to make sure his heartrate was steady’accept ‘to see if there wasany change’accept ‘so he could find outhis normal heart rate’accept ‘to get a reliablereading of his pulse rate’accept ‘to find the average’
any one from:* to allow his resting pulse
rate to be determined* to compare his pulse before
and after drinking the cola* so he would know if it had
changed
Where more than one answer is acceptable, this is indicated in the mark scheme by
‘any one from’. Each possible correct answer is marked with an asterisk. In some cases,
alternative answers are indicated by ‘or’.
In the following example from part (a) (ii) of tier 5–7 paper 2 question 13, an answer
giving ‘alcohol increases the reaction time’ and ‘alcohol reduces co-ordination’ will be
awarded two marks. However, an answer which gives ‘alcohol reduces co-ordination’
and ‘they would feel dizzy’ will be given only one mark, as both points are correct
answers for the same mark.
In the following example, from part (a) of tier 3–6 paper 1 question 17 and tier 5–7
question 8, the statement in bold type in the ‘Additional guidance’ column is given in
order to indicate the general requirement of that part of the question.
In the ‘Accept’ column there may be:
■ examples of answers which are acceptable, although they do not correspond exactly
to the expected answers;
■ some examples of higher level answers, which could be given by higher attaining
pupils answering questions on the lower levels in the tier.
2004 KS3 Science Mark Scheme Tiers 3–6 and 5–7 Introduction
3
Part Mark Answer Accept Additional guidance
a ii 22/2m ‘it slows them down’ is
insufficientaccept ‘it slows reactions’ or‘it slows the reaction time’accept ‘they would feel dizzy’
accept ‘they would be sleepyor drowsy’
accept ‘alcohol makes themlose more heat’accept ‘it causes blurredvision’
any two from:* alcohol increases the
reaction time* alcohol reduces
co-ordination* alcohol causes or increases
errors of judgement* alcohol reduces
concentration
Part Mark Answer Accept Additional guidance
a 24/1a
both marks should only beawarded if the circuit is correct
award one mark if all threebulbs are drawn in parallel orall in series
* one mark for B and C inseries
* one mark for A in parallelwith B and C, for example
4
In the ‘Additional guidance’ column there may be:
■ answers which are not acceptable;
■ a reminder, in questions involving calculations, that consequential marking may
be used;
■ instructions on action in the event of consequential marking (see below);
■ guidance to markers where pupils have not followed the instructions on the question.
Marking
The number of marks available for each part of a question and the maximum number of
marks for the question as a whole are shown on the question paper. Every part of a
question which has been attempted by a pupil will be marked and the mark for each part
recorded in the mark box alongside that part. Half marks will not be given in any
question.
The total number of marks awarded for all the parts of questions on a double page will
be written in the box at the bottom of the right-hand page. In some instances, this will
be the sum of marks awarded for two questions. The total number of marks obtained
on the paper will be recorded on the front of the test paper.
The total number of marks available is 180 in tier 3–6 and 150 in tier 5–7.
Using professional judgement in marking
The instructions given in the mark scheme will enable the markers to decide whether
pupils have correctly answered a particular question. However, there will be instances
where an answer given by a pupil does not correspond to any of the possible responses
shown in the mark scheme. In such cases, markers will apply their professional
judgement to decide if credit should be given. They will consider whether the response:
■ is equivalent to those listed;
■ conveys the ideas underlying the question as outlined in the statement in
bold type in the mark scheme, if one is given.
If any doubt persists, markers will consult with their supervisors for guidance.
Marking misspellings of words
If a pupil misspells a word, markers will apply the following procedures:
■ if it is clear that the pupil has made a simple error, eg ‘tow’ for ‘two’ or ‘Son’ for
‘Sun’, then the incorrect spelling will be accepted and the mark awarded;
■ if a pupil misspells a word copied from the text of the question or from a selection
given, and the new word does not have any inappropriate meaning, the incorrect
spelling will be accepted and the mark awarded;
■ if specific scientific vocabulary is required in the answer, a creditworthy misspelling
must be a phonetic equivalent of the required word, with the major syllables of the
correct word represented in the answer.
2004 KS3 Science Mark Scheme Tiers 3–6 and 5–7 Introduction
Marking lists of alternative answers
In some instances, pupils give more than one answer to a single question. If any of the
answers given is incorrect, the mark will not be awarded, irrespective of the order in
which the answers are given. In some cases, a correct answer is given alongside other
answers which, while correct, would be insufficient for the mark. In these cases, the
mark will be given for the correct answer.
Marking questions containing calculations
Some questions require pupils to perform calculations. Where two marks are available,
they are advised to show their working. Pupils who do not show their working but give
the correct answer will be awarded full marks.
The result of one calculation may be required in order to carry out further calculations.
In such instances:
■ the term ‘consequential marking’ appears in the ‘Additional guidance’ column;
■ a pupil’s result for the first calculation is treated as the starting point for the
second;
■ the pupil is awarded full credit for the second calculation if it is carried out
correctly, even if the result of the first calculation was wrong.
Marking answers given in the wrong place
In some cases, pupils may write correct answers in the wrong part of the question.
Markers will use professional judgement to decide whether a pupil has correctly
understood the question and simply written the answer in the wrong place. Similarly, if
pupils identify an answer by a cross or other indication when a tick is required, they will
be given credit for their responses.
Awarding levels
The sum of the marks gained on both papers determines the level awarded. A copy of
the level threshold tables which show the mark ranges for the award of different levels
will be sent to each school by QCA in July 2004.
Schools will be notified of pupils’ results by means of a marksheet, which will be
returned to schools by the External Marking Agency with the pupils’ marked scripts.
The marksheet will include pupils’ scores on the test papers and the levels awarded.
The 2004 key stage 3 science tests and mark schemes were developed by the
University of Cambridge Local Examinations Syndicate and the Centre for Research
into Primary Science and Technology (CRIPSAT) on behalf of QCA.
2004 KS3 Science Mark Scheme Tiers 3–6 and 5–7 Introduction
5
6
2004 KS3 Science Mark Scheme Tiers 3–6 and 5–7 Introduction
TIER 3–6 Paper 1 TIER 3–6 Paper 2
Q Sc1 Sc2 Sc3 Sc4 Q Sc1 Sc2 Sc3 Sc4
1 5 1 4
2 6 2 2 3
3 4 3 4
4 6 4 4
5 2 2 5 5
6 5 6 4
7 5 7 6
8 1 2 8 6
9 7 9 7
10 1 4 10 5
11 4 11 2 3
12 6 12 7
13 5 13 1 6
14 4 14 5
15 5 1 15 5
16 8 16 7
17 4 17 4
18 3 Total
Total
TotalP1 + 2 46 47
Overall
180
18 19 21 32
28 28 19 15
2
1 4
5
1
1
3
1
4
47 40
Mark Allocation Grid: Tier 3–6
2004 KS3 Science Mark Scheme Tiers 3–6 and 5–7 Introduction
7
TIER 5–7 Paper 1 TIER 5–7 Paper 2
Q Sc1 Sc2 Sc3 Sc4 Q Sc1 Sc2 Sc3 Sc4
1 1 4 1 5
2 4 2 2 3
3 6 3 7
4 5 4 1 6
5 4 5 5
6 5 1 6 5
7 8 7 7
8 4 8 4
9 3 9 4
10 4 10 2 3
11 3 3 11 5
12 6 12 6
13 5 13 4
14 4 14 5 1
15 5 Total 30 18 12
Total
TotalP1 + 2 42 35 37 36
150
12 17 25 21
Overall
15
The requirements of the Introduction to the Programme of Study apply across Sc1, Sc2, Sc3 and Sc4.
The Mark Allocation Grids on this pair of pages show the context of these questions in relation to Sc1, Sc2, Sc3 and Sc4.
Mark Allocation Grid: Tier 5–7
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
On
e
9
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l5
bo
than
swer
s ar
e re
quire
d fo
r th
e m
ark
if m
ore
than
tw
o bo
xes
are
ticke
d, d
educ
t on
em
ark
for
each
inco
rrec
t tic
km
inim
um m
ark
zero
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k
* eg
g ce
ll✓
sp
erm
cel
l✓
* re
prod
uctiv
e sy
stem
✓
1 1
b i
2/1e b ii
2/2g
acce
pt ‘R
ache
l and
Bill
do
not
have
fre
ckle
s’ac
cept
‘a g
rand
pare
nt h
as f
reck
les’
acce
pt ‘t
heir
fam
ily o
rth
e fa
mily
on
the
right
has
frec
kles
’ac
cept
‘fre
ckle
s ru
n in
the
fam
ily’
acce
pt ‘f
amily
A d
oes
not
have
fre
ckle
s’
acce
pt ‘h
is fa
mily
doe
s no
t ha
ve f
reck
les’
acce
pt ‘h
is g
rand
pare
nts
do n
ot h
ave
frec
kles
’ac
cept
‘he
is n
ot in
fam
ily B
’if t
he a
nsw
er fo
r a
iiis
‘onl
y fa
mily
B h
as fr
eckl
es’
any
on
efr
om*
thei
r m
othe
r o
rP
am h
as f
reck
les
* th
eir
fath
er o
rD
avid
has
fre
ckle
s*
thei
r pa
rent
s ha
ve f
reck
les
* th
eir
gran
dmot
her
or
Mar
y ha
s fr
eckl
es*
only
fam
ily B
has
fre
ckle
s
* hi
s pa
rent
s o
rB
ob a
nd E
mily
do
not
have
frec
kles
1 1
a ii
2/4a
a iii
2/4a
bo
than
swer
s ar
e re
quire
d fo
r th
e m
ark
if m
ore
than
tw
o bo
xes
are
ticke
d, a
war
d no
mar
k*
Kat
ie✓
Bec
ca✓
1a
i2/
4a
Q N
o1
Tie
r3–
6
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
On
e
10
Q N
o2
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
* a
bar
draw
n to
10
1d
1/2i
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k*
obse
rve
pupi
ls’t
ongu
es✓
1c
1/2b
‘the
num
bers
are
writ
ten
wro
ngly
’is
insu
ffici
ent
acce
pt ‘m
illim
etre
s’
acce
pt ‘t
hey
did
65 t
wic
e o
rth
ree
times
’
acce
pt c
orre
ct r
efer
ence
s to
spe
cific
nu
mbe
rs e
g ‘th
ey c
ould
not
rec
ord
55.5
or
60.5
mm
’ac
cept
sug
gest
ions
for
impr
ovin
g th
e ba
r ch
art
such
as
‘the
last
bar
sho
uld
be 7
1–75
’
* m
m
any
on
efr
om*
som
e of
the
leng
ths
appe
ar in
mor
eth
an o
ne b
ar*
som
e pe
ople
wer
e co
unte
d tw
ice
* th
e ra
nge
varie
s fo
r th
e ba
rs
* so
me
leng
ths
are
mis
sed
out
1 1
b i
1/2g b ii
1/2i
acce
pt ‘i
t is
har
d to
mea
sure
a b
ent
finge
r’
acce
pt ‘t
he m
easu
rem
ent
wou
ld b
e w
rong
’
any
on
efr
om*
to m
ake
the
mea
sure
men
ts r
elia
ble
* to
mak
e it
fair
* m
ake
sure
the
mea
sure
men
t is
cor
rect
* to
mak
e it
accu
rate
1a
1/2e
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
On
e
11
Q N
o2
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l6
num
bers
nee
d no
t be
pre
cise
for
this
mar
k
don
ot
acce
ptan
ans
wer
whi
ch o
nly
com
pare
s th
e nu
mbe
rof
bar
s on
the
bar
char
ts
acce
pt t
he c
onve
rse
acce
pt ‘1
6 ch
ildre
n re
cord
ed w
ithm
easu
rem
ents
50–
60 m
m.O
nly
14ch
ildre
n re
cord
ed in
inve
stig
atio
n 2’
acce
pt ‘3
6 pe
ople
in t
he f
irst
inve
stig
atio
n,
but
only
14
in t
he s
econ
d’ac
cept
‘the
re a
re m
ore
high
er b
ars’
acce
pt ‘h
ighe
r ba
rs’
acce
pt ‘t
hey
add
up t
o di
ffere
nt n
umbe
rs’
* m
ore
child
ren
wer
e re
cord
ed in
inve
stig
atio
n 1
than
in in
vest
igat
ion
21
e1/
2e
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
On
e
12
Q N
o3
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l4
thes
e le
ss p
reci
se t
erm
s ar
e ac
cept
ed if
the
answ
er in
dica
tes
that
the
sca
b ac
ts a
s a
barr
ier
‘to k
eep
it cl
ean’
is in
suffi
cien
t
‘it s
tops
dis
ease
s ge
tting
in’i
s in
suffi
cien
t
acce
pt ‘m
icro
bes’
or
‘ger
ms’
for
bact
eria
acce
pt ‘i
t st
ops
dirt
get
ting
in’
acce
pt ‘i
t st
ops
infe
ctio
n’ac
cept
‘it
stop
s di
seas
e’
any
on
efr
om*
it st
ops
blee
ding
* it
prev
ents
bac
teria
or
viru
ses
from
ent
erin
g
1c
2/2n
‘you
wou
ld d
ie’i
s in
suffi
cien
t
acce
pt ‘i
t st
ops
oxyg
en’
acce
pt ‘i
t bl
ocks
the
blo
od v
esse
l’
acce
pt ‘i
t ca
uses
a h
eart
atta
ck’o
r‘a
str
oke’
or
‘thro
mbo
sis’
acce
pt ‘i
t st
ops
the
flow
of
bloo
d’o
r‘it
sto
psbl
ood
flow
ing
arou
nd t
he b
ody’
any
on
efr
om*
it pr
even
ts o
xyge
n ge
tting
to
the
orga
n*
it pr
even
ts fo
od g
ettin
g to
the
org
an*
it st
ops
bloo
d ge
tting
to
the
orga
n
1b
2/2c
2/2l
don
ot
acce
pt‘a
ir’ac
cept
‘O2’
acce
pt ‘s
ugar
’ac
cept
‘am
ino
acid
s’o
r‘fa
tty a
cids
’or
‘gly
cero
l’ac
cept
‘foo
d’o
r‘n
utrie
nts’
acce
pt a
nam
ed v
itam
inac
cept
a n
amed
min
eral
* ox
ygen
any
on
efr
om*
gluc
ose
* di
gest
ed fo
od
* vi
tam
ins
* m
iner
als
* w
ater
1 1
a i
2/2l
a ii
2/2c
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
On
e
13
Q N
o4
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l6
‘it h
ad d
ried
up’i
s in
suffi
cien
t
don
ot
acce
pt‘th
e so
lutio
n ev
apor
ated
’
acce
pt ‘t
he li
quid
had
eva
pora
ted’
or
‘it h
adev
apor
ated
’ac
cept
a d
escr
iptio
n of
eva
pora
tion
eg ‘i
t tu
rned
into
gas
’
* th
e w
ater
had
eva
pora
ted
1c
3/1h
don
ot
acce
pt‘b
lue
part
icle
s’do
no
tac
cept
‘bla
ck s
olut
ion’
don
ot
acce
pt‘m
ixtu
re’
acce
pt ‘f
ilter
’
acce
pt ‘p
artic
les’
or
‘sol
ids’
acce
pt ‘s
olut
ion’
acce
pt ‘l
iqui
d’
* fil
trat
ion
or
filte
ring
*A
:bla
ck p
artic
les
or
solid
or
resi
due
*B
:blu
e so
lutio
n o
rfil
trat
e
1 1 1
b i
3/1h b ii
3/1h
if m
ore
than
tw
o bo
xes
are
ticke
d, d
educ
t on
em
ark
for
each
inco
rrec
t tic
km
inim
um m
ark
zero
* It
has
a hi
gh m
eltin
g po
int.
✓*
It is
a g
ood
cond
ucto
r of
hea
t an
d el
ectr
icity
.✓
1 1a
3/1d
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
On
e
14
Q N
o5
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l4
answ
ers
may
be
in a
ny o
rder
all t
hre
ean
swer
s ar
e re
quire
d fo
r th
e m
ark
acce
pt ‘b
ird’f
or s
parr
ow*
hum
an a
ndsp
arro
w a
ndra
bbit
* ca
t
1 1
b i
1/2k b ii
1/2k
‘mov
e’is
insu
ffici
ent
acce
pt ‘m
ove
in a
nd o
ut’
acce
pt ‘i
t st
ops
soun
d re
achi
ng o
ur e
ardr
um’
acce
pt ‘i
t ab
sorb
s so
und’
acce
pt ‘i
t bl
ocks
the
ear
’ac
cept
‘it
stop
s th
e ea
rdru
m m
ovin
g in
and
out
’
acce
pt ‘s
ound
wav
es a
re r
efle
cted
by
the
wax
’
* vi
brat
e
any
on
efr
om*
it st
ops
the
soun
d w
aves
or
vibr
atio
ns r
each
ing
our
eard
rum
s
* it
stop
s th
e ea
rdru
m v
ibra
ting
* th
e ea
rdru
m v
ibra
tes
less
1 1
a i
4/3g a ii
4/3g
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
On
e
15
Q N
o6
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l5
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k
all t
hre
e an
swer
s ar
e re
quire
d in
the
cor
rect
ord
erac
cept
a d
raw
ing
of a
tria
ngle
, a
circ
le a
nd
a sq
uare
* re
sults
✓
* tr
iang
le c
ircle
squ
are
1 1
d i
1/2i
d ii
1/2k
answ
ers
mus
t in
dica
te t
hat
the
cros
s sh
ows
whe
n th
e te
asar
e th
e sa
me
colo
ur o
ral
low
s a
mea
sure
men
t to
be
mad
e
‘it m
ade
it fa
ir’is
insu
ffici
ent
acce
pt ‘a
s so
on a
s it
has
gone
the
y st
oppe
dtim
ing’
acce
pt ‘s
o th
ey k
now
how
long
it t
akes
’ac
cept
‘the
cro
ss le
t th
em s
ee w
hen
the
tea
prod
uced
by
the
3 ba
gs w
as t
he s
ame’
acce
pt ‘s
o th
ey c
ould
sto
p at
the
rig
ht t
ime’
acce
pt ‘i
t te
lls t
hem
whe
n th
ey h
ave
diss
olve
d th
e sa
me’
any
on
efr
om*
it al
low
ed t
hem
to
com
pare
the
tim
es fo
rdi
ffere
nt t
ea b
ags
* it
told
the
m w
hen
the
mea
sure
men
t w
asco
mpl
eted
* so
the
y kn
ew w
hen
to s
top
1c
1/2h
cred
it m
ay b
e gi
ven
for
answ
ers
whi
ch,
alth
ough
not
accu
rate
, im
ply
that
the
wat
er is
at a
hig
h te
mpe
ratu
re e
g ‘it
is n
early
boi
ling’
acce
pt ‘i
t is
ver
y ho
t’ac
cept
‘to
avoi
d sp
illin
g’*
to a
void
sca
ldin
g o
rbu
rnin
g th
emse
lves
1b
1/2f
acce
pt t
he c
onve
rse
of a
ny m
arki
ng p
oint
acce
pt a
sta
tem
ent
refe
rrin
g to
any
of
the
poin
ts in
the
seco
nd p
lan
acce
pt a
nsw
ers
whi
ch d
escr
ibe
a co
nseq
uenc
e of
the
tes
tno
t be
ing
fair
acce
pt a
des
crip
tion
whi
ch id
entif
ies
a fa
ctor
to
be k
ept
cons
tant
acce
pt ‘t
he s
econ
d pl
an in
clud
es a
ppar
atus
to
be
used
or
a m
easu
rem
ent
or
aco
mpa
rison
’
any
on
efr
om*
it de
scrib
es h
ow t
hey
will
car
ry o
ut t
heir
inve
stig
atio
n*
it ha
s m
ore
info
rmat
ion
or
deta
il*
it in
clud
es a
fair
test
* it
incl
udes
mea
sure
men
t
1a
1/2a
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
On
e
16
Q N
o7
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l5
acce
pt ‘t
o st
op t
he b
atte
ries
runn
ing
dow
n’
acce
pt ‘t
o st
op t
he c
onta
cts
com
ing
toge
ther
’
any
on
efr
om*
it st
oppe
d cu
rren
t fr
om f
low
ing
* pa
per
does
not
con
duct
or
is a
n in
sula
tor
* th
e ci
rcui
t w
as b
roke
n o
rin
com
plet
e*
so t
hat
the
circ
uit
can
be c
ompl
eted
1c
4/1b
‘the
bulb
is n
ot c
onne
cted
pro
perly
’is
insu
ffici
ent
‘turn
the
bat
terie
s ro
und’
is in
suffi
cien
tth
e m
ark
may
be
awar
ded
for
a de
scrip
tion
of t
hefa
ult
eg ‘b
oth
batte
ries
are
the
sam
e w
ay u
p’
acce
pt ‘t
he c
oil i
s br
oken
’
acce
pt ‘t
urn
a ba
ttery
rou
nd’
acce
pt ‘t
urn
the
batte
ry’
acce
pt ‘p
ut t
he b
atte
ries
in t
he r
ight
way
’
any
on
efr
om*
the
bulb
is b
roke
n o
rbl
own
* th
e fil
amen
t is
bro
ken
* tu
rn o
ne o
f th
e ce
lls a
roun
d
1 1
b i
4/1b b ii
4/1b
a m
ark
may
be
awar
ded
for
any
corr
ectly
conn
ecte
d ci
rcui
t dr
awn
with
str
aigh
t o
rcu
rved
wire
saw
ard
a m
ark
for
a co
rrec
t ci
rcui
t di
agra
m in
whi
ch t
he p
upil
has
draw
n th
e sy
mbo
ls in
stea
d of
conn
ectin
g th
e pr
inte
d sy
mbo
ls
acce
pt ‘t
he c
onta
cts
cam
e to
geth
er’
acce
pt
any
on
efr
om*
it le
t th
e cu
rren
t o
rel
ectr
icity
flo
w*
curr
ent
coul
d flo
w t
hrou
gh t
he b
ulb
* it
com
plet
ed t
he c
ircui
t
* al
l thr
ee c
ompo
nent
s m
ust
be c
orre
ctly
conn
ecte
d in
ser
ies
1 1
a i
4/1a a ii
4/1a
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
On
e
17
Q N
o8
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
* *
Tota
l3
don
ot
acce
pt‘th
e co
mpa
sses
or
the
expe
rimen
to
rit
wou
ld n
ot w
ork’
acce
pt ‘t
hey
wou
ld n
ot p
oint
to
the
alum
iniu
m’
acce
pt ‘t
hey
wou
ld a
ll po
int
nort
h o
rup
or
dow
n’ac
cept
‘the
y w
ould
poi
nt t
he s
ame
way
or
in t
hesa
me
dire
ctio
n’ac
cept
‘the
y w
ould
go
back
to
how
the
y w
ere’
any
on
efr
om*
noth
ing
* th
ey w
ould
bot
h po
int
tow
ards
mag
netic
nor
th
1c
3/1d
all f
ou
rpo
les
mus
t be
cor
rect
for
the
mar
kN
SN
S1
b4/
1d
all f
ou
rpo
les
mus
t be
cor
rect
for
the
mar
kS
NS
N1
a4/
1d
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
On
e
18
Q N
o9
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k*
4 ho
urs
✓1
d ii
4/4a
B
C
A
acce
pt a
ny p
oint
with
in t
he t
oler
ance
s sh
own
* po
int
A m
arke
d ha
lfway
bet
wee
n 5.
00 a
m a
nd1.
00 p
m1
d i
4/4a
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k*
the
Sun
✓1
c4/
4d
acce
pt ‘t
o lo
ok a
t th
e w
eath
er’
acce
pt ‘t
elep
hone
’or
‘inte
rnet
’
acce
pt ‘H
ubbl
e te
lesc
ope’
acce
pt ‘t
o fin
d ou
t m
ore
abou
t th
e un
iver
se’
acce
pt ‘n
avig
atio
n’ac
cept
‘mon
itorin
g th
e E
arth
’ac
cept
‘sea
rchi
ng fo
r m
eteo
rs o
rco
met
s’
any
on
efr
om*
wea
ther
fore
cast
ing
* co
mm
unic
atio
ns*
tele
visi
on o
rT
V*
spyi
ng*
spac
e te
lesc
ope
* gl
obal
pos
ition
ing
syst
em o
rG
PS
1b
4/4e
answ
ers
mus
t be
in t
he c
orre
ct o
rder
if al
l thr
ee a
nsw
ers
are
corr
ect,
awar
d tw
o m
arks
if on
e o
rtw
o an
swer
s ar
e co
rrec
t, aw
ard
one
mar
k
*E
arth
:B
*S
un:
A*
Moo
n:C
2a
4/4b
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
On
e
19
Q N
o9
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l7
B
C
igno
re a
rrow
sth
e lin
e m
ust
star
t an
d fin
ish
on t
he h
oriz
ondo
no
tac
cept
a cu
rve
whi
ch b
egin
s or
fin
ishe
s at
the
sam
e po
ints
as
the
exis
ting
curv
e
* a
curv
e be
low
the
prin
ted
line
at a
ll po
ints
1e
4/4a
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er O
ne
21
Q N
o10 1
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l5
‘mak
e th
e fo
etus
ill’
is in
suffi
cien
t
don
ot
acce
pt‘th
e ba
by g
ets
no o
xyge
n’do
no
tac
cept
‘the
baby
get
s no
food
’‘le
ss b
lood
to
foet
us’i
s in
suffi
cien
t
acce
pt ‘k
ill t
he fo
etus
’
acce
pt ‘n
ot e
noug
h fo
od’
any
on
efr
om*
brai
n da
mag
e*
low
bir
th w
eigh
t*
prem
atur
e bi
rth
or
mis
carr
iage
* le
ss o
rno
t en
ough
oxy
gen
* le
ss o
rno
t en
ough
nut
rient
s*
build
up
of c
arbo
n di
oxid
e o
rC
O2
or
was
te
1e
2/2h
any
on
efr
om*
liver
* ki
dney
* br
ain
* he
art
1d
2/2m
don
ot
acce
pt‘la
rge
inte
stin
e’ac
cept
‘int
estin
e’*
smal
l int
estin
e1
c2/
2c
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k*
It in
crea
ses
the
time
take
n to
rea
ct.
✓1
b2/
2m
acce
pt a
nsw
ers
from
3.4
to
3.6
* 3.
51
a1/
2k
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er O
ne
22
Q N
o11 2
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
acce
pt ‘Y
asm
in is
mor
e sp
ecifi
c o
rm
ore
deta
iled’
acce
pt ‘H
arry
doe
sn’t
say
wha
t th
e ef
fect
is’
acce
pt ‘H
arry
’s c
oncl
usio
n co
uld
mea
n th
at
his
hear
t ra
te w
as s
low
er’
any
on
efr
om*
Yasm
in’s
con
clus
ion
desc
ribes
how
it
affe
cted
his
hea
rt r
ate
whi
le H
arry
’s ju
st
says
it a
ffect
ed h
is h
eart
rat
e*
Yasm
in’s
con
clus
ion
desc
ribes
the
di
rect
ion
of t
he c
hang
e in
his
hea
rt r
ate
* Ya
smin
’s c
oncl
usio
n de
scrib
es h
ow h
is
hear
t ra
te c
hang
ed
1c
1/2o
acce
pt ‘h
is h
eart
rat
e o
rpu
lse
wen
t up
’ac
cept
‘it
show
s hi
s he
art
rate
wen
t up
’ac
cept
‘the
gra
ph s
how
s hi
s he
art
rate
ch
ange
d’ac
cept
‘the
line
goe
s up
or
chan
ged’
acce
pt ‘t
he p
oint
s ge
t hi
gher
’
* hi
s he
art
rate
wen
t up
afte
r he
dra
nk s
ome
cola
1b
1/2k
‘he
wan
ted
to k
now
his
hea
rt r
ate
befo
re h
e dr
ank
his
cola
’is
insu
ffici
ent a
s th
is is
giv
en in
the
ques
tion
acce
pt ‘t
o ge
t a
read
ing
of h
eart
rat
e w
hen
rela
xed’
acce
pt ‘t
o m
ake
sure
his
hea
rt r
ate
was
st
eady
’ac
cept
‘to
see
if th
ere
was
any
cha
nge’
acce
pt ‘s
o he
cou
ld f
ind
out
his
norm
al
hear
t ra
te’
acce
pt ‘t
o ge
t a
relia
ble
read
ing
of h
ispu
lse
rate
’ac
cept
‘to
find
the
aver
age’
any
on
efr
om*
to a
llow
his
res
ting
puls
e ra
te t
o be
de
term
ined
* to
com
pare
his
pul
se b
efor
e an
d af
ter
drin
king
the
col
a*
so h
e w
ould
kno
w if
it h
ad c
hang
ed
1a
1/2h
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er O
ne
23
Q N
o11 2
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l4
‘to s
ee if
som
ethi
ng e
lse
had
an e
ffect
’is
insu
ffici
ent
acce
pt ‘y
ou w
ould
kno
w if
it w
as b
ubbl
esth
at h
ad a
n ef
fect
’ac
cept
‘usi
ng m
ore
or
diffe
rent
drin
ks w
ould
give
mor
e ev
iden
ce’
any
on
efr
om*
drin
king
fiz
zy w
ater
wou
ld b
e a
cont
rol
* it
wou
ld e
nabl
e th
em t
o se
e w
heth
er
fizzi
ness
or
spar
klin
g dr
inks
wou
ld h
ave
an e
ffect
* it
wou
ld a
llow
the
m t
o se
e if
carb
on d
ioxi
de o
rca
rbon
atio
n ha
s an
effe
ct*
it w
ould
sho
w it
was
som
ethi
ng e
lse
in
cola
tha
t ha
d an
effe
ct
1d
1/2d
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er O
ne
24
Q N
o12 3
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l6
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k
* ca
rbon
dio
xide
+ w
ater
→
gluc
ose
+ *
oxy
gen
* to
pro
vide
ene
rgy
✓
1 1 1
d i
2/3b d ii
2/2d
acce
pt t
he c
onve
rse
* th
e m
ore
inse
cts
ther
e ar
e o
rfo
od t
here
is t
hem
ore
bact
eria
the
re w
ill b
e1
c2/
2n
‘to a
ttrac
t in
sect
s’is
insu
ffici
ent
any
on
efr
om*
they
pre
vent
inse
cts
or
flies
fro
m c
raw
ling
out
* in
sect
s sl
ide
in*
they
mak
e it
diffi
cult
for
them
to
craw
l out
1b
2/5c
‘root
’is
insu
ffici
ent
* ro
ot h
air
1a
2/3d
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er O
ne
25
Q N
o13 4
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l5
answ
ers
may
be
in e
ither
ord
er*
zinc
chl
orid
e +
* hy
drog
en1 1
b3/
3a3/
1f
bo
thth
e an
swer
and
the
rea
son
are
requ
ired
for
the
mar
k
bo
thth
e an
swer
and
the
rea
son
are
requ
ired
for
the
mar
k
don
ot
acce
pt‘m
akes
it m
ore
alka
line’
acce
pt ‘C
O2’
acce
pt ‘i
t to
ok m
ost
drop
s’o
r‘it
too
k 16
0’
acce
pt ‘n
o dr
ops
or
alka
li w
ere
need
ed’
acce
pt ‘t
here
was
no
chan
ge’
acce
pt ‘i
t m
akes
it le
ss a
cidi
c’ac
cept
‘it
mak
es it
pH
7’
acce
pt ‘i
t fo
rms
a sa
lt’
* ca
rbon
dio
xide
any
on
efr
om*
it to
ok m
ore
or
mos
t al
kali
to n
eutr
alis
e it
or
toch
ange
the
col
our
of t
he in
dica
tor
back
to
gree
n
* ai
r*
it di
d no
t ch
ange
the
col
our
of t
he in
dica
tor
or
the
pH o
f th
e so
lutio
n
any
on
efr
om*
neut
ralis
es it
* it
rais
es t
he p
H
1 1 1
a i
3/3d
1/2k a ii
3/3d
a iii
3/3e
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er O
ne
26
Q N
o14 5
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l4
‘it is
wat
erpr
oof’
is in
suffi
cien
tan
y o
ne
from
* it
is in
solu
ble
in w
ater
* w
ater
is n
ot a
sol
vent
for
the
pain
t*
it di
ssol
ves
in w
hite
spi
rit*
whi
te s
pirit
is a
sol
vent
for
the
pain
t
1b
3/2b
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k
don
ot
acce
pt‘s
olid
par
ticle
s ar
e he
avy’
with
out
aco
mpa
rison
or
qual
ifier
eg
‘too
heav
y’ac
cept
‘it
is h
eavi
er t
han
the
liqui
d o
rth
e pa
int’
acce
pt ‘t
he s
olid
par
ticle
s ar
e m
ore
dens
e o
rhe
avie
r o
rto
o he
avy’
acce
pt ‘t
he s
olid
is d
ense
r’ac
cept
‘the
liqu
id is
less
den
se’o
r‘th
e liq
uid
islig
hter
’
* a
mix
ture
✓
* a
com
poun
d✓
any
on
efr
om*
they
are
den
ser
than
the
liqu
id
* th
e liq
uid
is le
ss d
ense
tha
n th
e so
lid
1 1 1
a i
3/1g a ii
3/1e
a iii
3/1a
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er O
ne
27
Q N
o15 6
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l6
acce
pt ‘t
he w
ater
is n
ot h
ot e
noug
h’
acce
pt ‘s
tear
ic a
cid
has
a ve
ry h
igh
boili
ng p
oint
’
any
on
efr
om*
the
boili
ng p
oint
of
wat
er is
less
tha
n th
at o
fst
earic
aci
d*
wat
er c
ould
not
tra
nsfe
r en
ough
ene
rgy
* th
e m
axim
um t
empe
ratu
re o
f w
ater
is 1
00°C
* it
cann
ot g
et h
ot e
noug
h
1c
3/1a
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k*
cond
uctio
n✓
1b
4/5f
acce
pt a
nsw
ers
from
54
to 5
6
* B
* 55
*po
int
A:so
lid*
poin
t D
:liq
uid
1 1 1 1
a i
3/2c a ii
3/2c
a iii
3/2c
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er O
ne
28
Q N
o16 7
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l8
the
last
tw
o an
swer
s m
ay b
e in
eith
er o
rder
acce
pt ‘h
eat’
* ki
netic
* so
und
* th
erm
al
1 1 1
c4/
5e4/
5g
acce
pt ‘w
eigh
t’
acce
pt ‘a
ir re
sist
ance
’
* gr
avity
or
grav
itatio
nal f
orce
any
on
efr
om*
fric
tion
* dr
ag*
wat
er r
esis
tanc
e
1 1
b i
4/2c b ii
4/2d
answ
ers
may
be
in e
ither
ord
erb
oth
answ
ers
are
requ
ired
for
the
mar
k*
A a
ndF
* A
* E
1 1 1
a i
4/5e a ii
4/5e
a iii
4/5e
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er O
ne
29
Q N
o17 8
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l4
acce
pt a
lette
r S
in a
ny p
art
of t
he c
ircui
t if
the
thre
e bu
lbs
are
draw
n in
ser
ies
* a
lette
r S
in a
ny p
art
of t
he c
ircui
t be
fore
itbr
anch
es1
c4/
1a
bo
thth
e le
tter
and
the
reas
on a
re r
equi
red
for
the
mar
k
answ
ers
shou
ld c
onve
y th
e id
ea t
hat
ener
gy o
rvo
ltage
is s
hare
d be
twee
n B
and
C b
ut A
is n
otsh
arin
g en
ergy
or
volta
ge
acce
pt ‘t
he o
ther
s ha
ve le
ss c
urre
nt p
assi
ngth
roug
h th
em’
acce
pt ‘A
has
a g
reat
er v
olta
ge a
cros
s it’
acce
pt ‘B
and
C h
ave
less
vol
tage
acr
oss
them
’ac
cept
‘the
re is
less
res
ista
nce
in t
he t
op o
rA
bran
ch o
f th
e ci
rcui
t’ac
cept
‘the
oth
ers
are
in s
erie
s’
* A
any
on
efr
om*
it ha
s m
ore
curr
ent
pass
ing
thro
ugh
it
* A
has
3 V
acr
oss
it an
d B
and
C h
ave
1.5
Vac
ross
the
m*
A h
as t
wic
e th
e vo
ltage
of
B o
rC
* be
caus
e it
is d
irect
ly c
onne
cted
to
the
supp
ly
1b
4/1b
awar
d on
e m
ark
if al
l thr
ee b
ulbs
are
dra
wn
inpa
ralle
l or
all i
n se
ries
bo
thm
arks
sho
uld
only
be
awar
ded
if th
e ci
rcui
tis
cor
rect
* on
e m
ark
for
B a
nd C
in s
erie
s*
one
mar
k fo
r A
in p
aral
lel w
ith B
and
Cfo
r ex
ampl
e
1 1a
4/1a
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er O
ne
30
Q N
o18 9
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l3
acce
pt ‘i
t sp
lits
into
tw
o ra
ys’o
r‘it
spl
its’
any
on
efr
om*
not
all t
he li
ght
is r
efle
cted
* so
me
of t
he li
ght
is r
efra
cted
* so
me
of t
he li
ght
is a
bsor
bed
* lig
ht is
sca
ttere
d by
the
gla
ss
1b
4/5g
answ
ers
may
be
in e
ither
ord
erb
oth
answ
ers
are
requ
ired
for
the
mar
k*
A a
ndC
any
on
efr
om*
B*
D
1 1
a i
4/3c a ii
4/3d
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5–
7 P
aper
On
e
31
Q N
o10
Tie
r5–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l4
‘the
mot
her
feed
s th
e pu
p’is
insu
ffici
ent
acce
pt ‘t
hrou
gh t
he u
mbi
lical
cor
d’ac
cept
‘fro
m t
he m
othe
r’s b
lood
’
acce
pt ‘t
hrou
gh t
he m
amm
ary
glan
ds’
acce
pt ‘t
he m
othe
r br
east
feed
s th
e pu
p’ac
cept
‘the
mot
her
feed
s th
e pu
p he
rsel
f’
* th
roug
h th
e pl
acen
ta
* in
milk
1 1
b i
2/2h
2/5f
b ii
2/2a
2/5f
acce
pt ‘D
DT
incr
ease
s up
the
food
cha
in’
acce
pt ‘t
he h
eron
get
s al
l the
DD
T in
the
oth
eran
imal
s’ac
cept
‘the
her
on is
at
the
top
of t
he fo
od c
hain
’ac
cept
‘DD
T is
not
exc
rete
d’ac
cept
‘DD
T r
emai
ns in
the
bod
y’ac
cept
‘DD
T is
sto
red
in t
he b
ody’
any
on
efr
om*
each
ani
mal
eat
s lo
ts o
f th
e or
gani
sm
belo
w it
in t
he fo
od c
hain
* D
DT
is n
ot e
asily
exc
rete
d*
DD
T is
not
bro
ken
dow
n
1a
ii2/
5f
four
box
es m
ust
be d
raw
n, d
ecre
asin
g in
wid
thto
war
ds t
he t
op,
and
all l
abel
s m
ust
be c
orre
ct fo
rth
e m
ark
hero
n
fish
daph
nia
chla
myd
omon
as
*1
a i
2/5e
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5–
7 P
aper
On
e
32
Q N
o11
Tie
r5–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l6
acce
pt ‘t
he w
aves
are
clo
ser
toge
ther
’ac
cept
‘the
re a
re m
ore
wav
es in
10
s’ac
cept
‘the
re a
re t
hree
bre
aths
in t
he f
irst
ten
seco
nds
and
five
in t
he n
ext
ten
seco
nds’
* it
beca
me
fast
er
any
on
efr
om*
the
brea
ths
are
clos
er t
oget
her
* th
ere
are
mor
e br
eath
s in
10
s
1 1
b i
1/2j
b ii
1/2j
acce
pt ‘s
he w
as u
sing
her
mus
cles
’
acce
pt ‘m
ore
resp
iratio
n’ac
cept
‘mor
e ox
ygen
was
nee
ded’
acce
pt ‘t
here
was
mor
e ca
rbon
dio
xide
to
rem
ove’
acce
pt fo
r th
e fir
st t
wo
mar
king
poi
nts
‘her
mus
cles
nee
d m
ore
ener
gy’
* 10
00
any
thre
efr
om*
she
was
usi
ng h
er m
uscl
es m
ore
* sh
e ne
eded
mor
e en
ergy
* he
r ra
te o
f re
spira
tion
incr
ease
d*
mor
e ox
ygen
was
use
d up
* m
ore
carb
on d
ioxi
de w
as p
rodu
ced
1 3
a i
1/2j
a ii
2/2j
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5–
7 P
aper
On
e
33
Q N
o12
Tie
r5–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l6
bo
thth
e na
me
and
form
ula
are
requ
ired
for
the
mar
kdo
no
tac
cept
‘O’o
r‘H
’or
‘N’o
r‘C
l’
bo
thth
e na
me
and
form
ula
are
requ
ired
for
the
mar
k
acce
pt a
ny o
ther
ele
men
t w
hich
exi
sts
as
diat
omic
mol
ecul
es in
the
gas
eous
sta
te
acce
pt a
ny c
ompo
und
with
the
form
ula
XY
2,eg
mag
nesi
um c
hlor
ide
MgC
l 2
any
on
efr
om*
nam
e:ox
ygen
fo
rmul
a:O
2*
nam
e:hy
drog
en
form
ula:
H2
*na
me:
nitr
ogen
form
ula:
N2
*na
me:
chlo
rine
form
ula:
Cl 2
any
on
efr
om*
nam
e:ca
rbon
dio
xide
fo
rmul
a:C
O2
*na
me:
wat
er
form
ula:
H2O
*na
me:
sulp
hur
diox
ide
form
ula:
SO
2*
nam
e:ni
trog
en d
ioxi
de o
rni
trog
en o
xide
fo
rmul
a:N
O2
1 1
c i
3/1f
c ii
3/1f
don
ot
acce
pt‘a
com
poun
d co
ntai
ns t
wo
or
mor
eat
oms
join
ed t
oget
her’
‘a m
ixtu
re c
an b
e se
para
ted’
is in
suffi
cien
t
acce
pt ‘a
com
poun
d co
ntai
ns d
iffer
ent
elem
ents
or
atom
s of
diff
eren
t ty
pes
join
ed t
oget
her’
acce
pt ‘a
mix
ture
can
be
sepa
rate
d by
phy
sica
lm
eans
’
any
on
efr
om*
a co
mpo
und
cont
ains
tw
o o
rm
ore
elem
ents
chem
ical
ly c
ombi
ned
or
bond
ed*
a m
ixtu
re c
onta
ins
two
or
mor
e el
emen
ts o
rco
mpo
unds
or
subs
tanc
es n
ot c
hem
ical
lyco
mbi
ned
or
bond
ed
1b
3/1e
3/1g
* A
* E
* C
1 1 1
a i
3/1c
3/1g a ii
3/1e
3/1g
a iii
3/1c
3/1e
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5–
7 P
aper
On
e
34
Q N
o13
Tie
r5–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l5
answ
ers
may
be
in e
ither
ord
er
acce
pt ‘S
O2’
acce
pt ‘s
ulph
ur t
rioxi
de’
acce
pt ‘S
O3’
acce
pt ‘C
aSO
4’ac
cept
‘CO
2’
* su
lphu
r di
oxid
e
* ca
lciu
m s
ulph
ate
+*
carb
on d
ioxi
de
1 1 1
b i
3/2i
b ii
3/3e
3/3g
answ
ers
may
be
in e
ither
ord
erig
nore
mul
tiple
s*
CO
2+
* C
aO1 1
a3/
1f
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5–
7 P
aper
On
e
35
Q N
o14
Tie
r5–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l4
mar
kers
sh
ou
ld r
ead
th
rou
gh
th
e w
ho
lean
swer
bef
ore
mar
kin
g t
his
qu
esti
on
‘(flo
wer
s fr
om)
diffe
rent
pla
nts’
is in
suffi
cien
t
awar
d a
mar
k fo
r an
swer
s of
2 w
eeks
or
mor
e
acce
pt ‘t
ype
of p
lant
’
acce
pt ‘h
ow lo
ng t
hey
stay
ed f
resh
’
acce
pt ‘a
mou
nt o
f su
nlig
ht s
houl
d be
the
sam
e’ac
cept
‘am
ount
of
wat
er s
houl
d be
the
sam
e’ac
cept
‘nut
rient
s ad
ded
shou
ld b
e th
e sa
me’
* m
odifi
ed a
nd u
nmod
ified
pla
nts
* th
e nu
mbe
r of
day
s o
rw
eeks
or
mon
ths
the
flow
ers
stay
ed f
resh
any
on
efr
om*
mod
ified
and
unm
odifi
ed p
lant
s sh
ould
be
the
sam
e va
riety
* co
nditi
ons
unde
r w
hich
flo
wer
s ar
e ke
pt s
houl
dbe
the
sam
e
* m
odifi
ed a
nd u
nmod
ified
pla
nts
shou
ld b
e th
esa
me
star
ting
age
A s
uita
ble
time
span
(w
hich
will
allo
w c
ompa
rison
)fo
r ex
ampl
e*
‘unt
il th
ey h
ave
all w
ilted
’o
r*
‘unt
il al
l ord
inar
y pl
ants
hav
e w
ilted
’
1 1 1 1
1/2d
1/2a
1/2d
1/2a
1/2d
1/2a
1/2e
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5–
7 P
aper
On
e
36
Q N
o15
Tie
r5–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l5
don
ot
acce
pt‘th
e co
re b
ecom
es m
agne
tic’
‘the
right
-han
d si
de m
oves
up’
is in
suffi
cien
t
acce
pt ‘t
here
is a
mag
netic
fie
ld’o
r‘th
eel
ectr
omag
net
switc
hes
on’
acce
pt ‘t
he le
ft-ha
nd s
ide
of t
he b
arrie
r m
oves
dow
n’
any
on
efr
om*
a cu
rren
t flo
ws
in t
he c
oil
* th
e co
il o
rth
e iro
n co
re b
ecom
es m
agne
tised
any
on
efr
om*
the
coun
terw
eigh
t is
attr
acte
d to
the
coi
l or
core
or
the
elec
trom
agne
t*
the
elec
trom
agne
t pr
oduc
es a
big
ger
mom
ent
1 1
b4/
1f
don
ot
acce
ptlo
wer
cas
e n
acce
pt ‘5
0 ×
1.5’
acce
pt ‘50
×1.
5’o
r‘5
0×
15’
0.1
acce
pt t
he n
umer
ical
ans
wer
to
part
a i
�0.
1
* 75
* N
m
* 75
0
1 1 1
a i
4/2f
a ii
4/2f
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
Tw
o
37
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l4
don
ot
acce
pt‘g
ravi
ty’
acce
pt ‘u
pthr
ust’
any
on
efr
om*
fric
tion
* ai
r re
sist
ance
or
drag
* re
actio
n
1c
4/2d
* 20
1b
4/2a
* C
*B
1 1
a i
4/2b a ii
4/2c
Q N
o1
Tie
r3–
6
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
Tw
o
38
Q N
o2
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l5
if m
ore
than
tw
o bo
xes
are
ticke
d, d
educ
t on
em
ark
for
each
inco
rrec
t tic
km
inim
um m
ark
zero
* T
hey
abso
rb w
ater
fro
m t
he s
oil.
✓*
The
y ab
sorb
min
eral
s fr
om t
he s
oil.
✓1 1
c2/
3d
acce
pt ‘s
ome
light
was
abs
orbe
d or
ref
ract
ed’
acce
pt ‘t
hey
boun
ced
off’
* th
ey w
ere
refle
cted
or
scat
tere
d1
b4/
3b
answ
ers
mus
t be
in t
he c
orre
ct o
rder
bo
than
swer
s ar
e re
quire
d fo
r th
e m
ark
answ
ers
mus
t be
in t
he c
orre
ct o
rder
bo
than
swer
s ar
e re
quire
d fo
r th
e m
ark
* se
ries
* al
l
* pa
ralle
l*
none
1 1
a i
4/1a a ii
4/1a
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
Tw
o
39
Q N
o3
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l4
don
ot
acce
pt‘d
iffer
ent
num
bers
of
peop
le’
‘diff
eren
t se
nsor
s’is
insu
ffici
ent
acce
pt ‘t
here
are
mor
e o
rbi
gger
vib
ratio
ns
at A
and
B’
acce
pt ‘w
ider
line
s in
rec
ordi
ngs
A a
nd B
’ac
cept
‘big
ger
ampl
itude
in A
and
B’
acce
pt ‘n
o vi
brat
ions
far
away
’
acce
pt ‘f
ewer
jum
ped
at B
’ac
cept
the
con
vers
e
acce
pt t
he c
onve
rse
acce
pt ‘t
he s
enso
r is
nea
rer
site
A t
han
B’
acce
pt ‘s
enso
r A
is c
lose
r to
the
pup
ils’
acce
pt t
he c
onve
rse
acce
pt ‘o
ne c
oncr
ete
the
othe
r gr
ass’
any
on
efr
om*
ther
e ar
e vi
brat
ions
in r
ecor
ding
s A
and
B
only
* no
vib
ratio
ns a
t C
any
on
efr
om*
mor
e pe
ople
jum
ped
near
A*
peop
le ju
mpe
d fr
om a
gre
ater
hei
ght
near
A*
sens
or A
is n
eare
r th
e si
te t
han
sens
or B
* m
ore
sens
itive
det
ecto
rs a
t A
* th
e gr
ound
cou
ld b
e di
ffere
nt
1 1
c i
1/1b c ii
1/2m
‘fair
test
’is
insu
ffici
ent
‘to g
et t
he b
est
resu
lts’i
s in
suffi
cien
tac
cept
‘so
the
sens
or c
an d
etec
t th
e vi
brat
ions
’
any
on
efr
om*
to m
ake
sure
any
effe
ct o
f ev
eryo
neju
mpi
ng w
as d
etec
ted
* to
mak
e th
e ef
fect
as
larg
e as
pos
sibl
e
1b
1/2a
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k*
pred
ictio
ns✓
1a
1/2c
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
Tw
o
40
Q N
o4
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l4
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k
* bu
bble
s fo
rmed
* It
turn
ed c
loud
y.✓
1 1
c i
3/1a c ii
3/1e
acce
pt ‘t
hey
form
ed a
sol
utio
n’ac
cept
‘the
y ar
e so
lubl
e’
any
on
efr
om*
they
dis
solv
ed*
they
are
sol
uble
in w
ater
1b
3/2b
don
ot
acce
pt‘a
sie
ve’
don
ot
acce
pt‘tw
eeze
rs’
acce
pt ‘a
n el
ectr
omag
net’
* a
mag
net
1a
3/1h
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
Tw
o
41
Q N
o5
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l5
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k*
heliu
m✓
1b
3/1d
if m
ore
than
one
line
is d
raw
n fr
om a
ny e
lem
ent,
awar
d no
mar
k fo
r th
at e
lem
ent
min
imum
mar
k ze
ro
cop
per
for
the
base
of a
sau
cepa
n
It is
ligh
ter
than
air.
It is
a g
ood
cond
ucto
r of
hea
t.
It is
a g
ood
cond
ucto
r of
elec
tric
ity.
It st
ays
shin
y be
caus
e it
does
no
tre
act w
ith o
xyge
n.
It is
a li
quid
at r
oom
tem
pera
ture
.
go
ldfo
r a
ring
hel
ium
in a
bal
loon
mer
cury
in a
ther
mom
eter
* * * *
1 1 1 1
a3/
1d
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
Tw
o
42
Q N
o6
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l4
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k*
solv
ent
✓1
b3/
2b
answ
ers
may
be
in e
ither
ord
erac
cept
H2O
acce
pt ‘c
arbo
n di
oxid
e’o
r‘C
O2’
* 4
* w
ater
* ga
s
1 1 1
a i
3/2a
1/2k a ii
3/2a
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
Tw
o
43
Q N
o7
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l6
* fr
om 1
–31
incl
usiv
e1
e1/
2c
acce
pt a
nsw
ers
whi
ch s
ugge
st t
hat
usin
g a
spat
ula
is n
ot a
prec
ise
mea
sure
men
tac
cept
‘you
mig
ht n
ot g
et th
e sa
me
amou
nt
of s
alt o
rsu
gar’
acce
pt ‘i
t is
not
pre
cise
or
am
easu
rem
ent’
acce
pt ‘m
easu
re w
eigh
t’o
r‘w
eigh
it’
acce
pt ‘u
se a
bal
ance
or
scal
es’
acce
pt ‘u
se g
ram
s’
acce
pt ‘u
se a
mea
surin
g cy
linde
r’ac
cept
‘lev
el it
with
a k
nife
’
any
on
efr
om*
you
mig
ht n
ot g
et t
he s
ame
mas
s ea
ch t
ime
* yo
u w
ill n
ot k
now
how
muc
h w
as a
dded
any
on
efr
om*
mea
sure
the
mas
s
* m
easu
re t
he n
umbe
r of
gra
ms
1 1
d i
1/2g d ii
1/2g
‘they
stir
red
it’is
insu
ffici
ent
acce
pt ‘t
hey
used
the
sam
e am
ount
of
wat
er’
acce
pt ‘t
hey
stirr
ed t
he s
ame
num
ber
of
times
’ac
cept
‘the
y st
irred
at
the
sam
e sp
eed’
acce
pt ‘t
hey
stirr
ed fo
r th
e sa
me
time’
any
on
efr
om*
they
use
d th
e sa
me
volu
me
of w
ater
1c
1/2d
‘to m
easu
re s
alt
or
suga
r’is
insu
ffici
ent
acce
pt ‘t
o m
ake
sure
the
y us
ed t
he s
ame
volu
me
of w
ater
in e
ach
beak
er’
acce
pt ‘t
o m
easu
re a
mou
nt o
f w
ater
’ac
cept
‘to
mea
sure
the
vol
ume
of s
alt
or
suga
r’
* to
mea
sure
vol
ume
1b
1/2e
allf
ive
lette
rs m
ust
be in
the
cor
rect
ord
er*
E D
A B
C1
a1/
2a
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
Tw
o
44
Q N
o8
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l6
don
ot
acce
pt‘it
kee
ps t
he c
old
out’
acce
pt ‘i
t in
sula
tes
them
’ac
cept
‘it
prev
ents
the
m g
ettin
g co
ld’
acce
pt ‘t
hey
cann
ot b
e se
en’
acce
pt ‘t
hey
are
cam
oufla
ged’
acce
pt ‘t
hey
are
the
sam
e co
lour
as
the
snow
’
any
on
efr
om*
it ke
eps
them
war
m*
it tr
aps
air
* fo
xes
or
pred
ator
s ca
nnot
see
the
m
1 1
e i
2/5c e ii
2/5c
acce
pt ‘t
hey
prot
ect
it’ac
cept
‘the
y st
op it
bei
ng e
aten
’
any
on
efr
om*
they
pro
tect
it a
gain
st p
reda
tors
* th
ey m
ake
it di
fficu
lt fo
r ot
her
anim
als
to e
at it
or
catc
h it
1d
2/5c
‘it c
an s
wim
’is
insu
ffici
ent
acce
pt ‘i
ts f
ur is
sm
ooth
or
fine
or
slop
esba
ckw
ards
’ac
cept
‘it
does
not
hav
e le
gs’
acce
pt ‘i
t ha
s fli
pper
s’
any
on
efr
om*
it is
str
eam
lined
* its
lim
bs a
re li
ke f
ins
or
padd
les
* it
has
a w
ide
or
pow
erfu
l tai
l
1c
2/5c
any
on
efr
om*
they
can
fly
* th
ey h
ave
win
gs
1b
2/4b
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k*
The
y pr
oduc
e m
ilk t
o fe
ed t
heir
youn
g.✓
1a
2/4b
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3–
6 P
aper
Tw
o
45
Q N
o9
Tie
r3–
6
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l7
acce
pt ‘t
hey
will
not
be
seen
’or
‘they
are
cam
oufla
ged’
acce
pt ‘t
hey
will
not
get
eat
en’
acce
pt ‘t
hey
can
be fo
und
easi
ly’
any
on
efr
om*
few
er w
ill b
e fo
und
by p
reda
tors
* fe
wer
will
be
eate
n
any
on
efr
om*
they
may
be
trod
den
on o
rda
mag
ed*
pred
ator
s ca
n ge
t to
the
m e
asily
1 1
e i
2/5d e ii
2/5d
any
on
efr
om*
they
can
see
pre
dato
rs o
rfo
xes
or
stoa
ts*
it ke
eps
them
war
m
1d
2/5c
2/5d
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k*
The
y m
ake
food
by
phot
osyn
thes
is.
✓1
c2/
5e2/
3a
bo
thth
e pr
edat
or a
nd it
s pr
ey a
re r
equi
red
for
the
mar
kan
y o
ne
from
*pr
edat
or:
part
ridge
pre
y:gr
assh
oppe
r o
rsn
ail
*pr
edat
or:
fox
prey
:pa
rtrid
ge*
pred
ator
:st
oat
prey
:pa
rtrid
ge
1b
2/5e
acce
pt ‘t
hey
eat
them
’
* gr
assh
oppe
r
any
on
efr
om*
they
eat
the
pla
nts
* th
e in
sect
s ea
t th
em
1 1
a i
2/4b a ii
2/5f
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er T
wo
46
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l5
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k*
B✓
1c
4/3j
4/3k
don
ot
acce
pt‘it
is b
lurr
ed’
‘it g
oes
in a
diff
eren
t di
rect
ion’
is in
suffi
cien
t
acce
pt ‘s
ound
tra
vels
to
the
win
dow
’
acce
pt ‘s
ound
hits
the
win
dow
’
acce
pt ‘s
catte
r’fo
r vi
brat
eac
cept
‘it
wou
ld g
o to
oth
er p
lace
s in
the
roo
m’
acce
pt ‘i
t w
ould
go
in d
iffer
ent
dire
ctio
ns’
acce
pt ‘i
t sh
akes
’or
‘it w
obbl
es’
any
on
efr
om*
soun
d w
aves
tra
vel t
o th
e w
indo
w o
rgl
ass
* vi
brat
ions
pas
s th
roug
h th
e ai
r*
soun
d w
aves
or
vibr
atio
ns h
it th
e w
indo
w
* th
e be
am w
ill v
ibra
te o
rm
ove
or
jum
p ab
out
1 1
b i
4/3g b ii
4/3c
the
ray
mus
t hi
t th
e sc
reen
in t
he m
iddl
e 2
cm
acce
pt o
ne a
rrow
in t
he c
orre
ct d
irect
ion
on e
ither
the
inci
dent
or
the
refle
cted
ray
* th
e an
gles
of
inci
denc
e an
d re
flect
ion
mus
t be
equa
l*
the
ray
mus
t be
con
tinuo
us a
nd s
trai
ght
with
an
arro
w in
the
cor
rect
dire
ctio
n
1 1
a4/
3c
Q N
o10 1
Tie
r3–
65–
7
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er T
wo
47
Q N
o11 2
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l5
don
ot
acce
pt‘a
lum
iniu
mo
rriv
ets
are
less
mag
netic
’do
no
tac
cept
‘iron
or
nails
are
mor
e m
agne
ticth
an a
lum
iniu
m o
rriv
ets’
acce
pt ‘a
lum
iniu
m is
not
mag
netic
’ac
cept
‘the
riv
ets
are
not
attr
acte
d to
a m
agne
t’
any
on
efr
om*
iron
is m
agne
tic*
iron
nails
are
attr
acte
d to
a m
agne
t*
ther
e is
a m
agne
tic fo
rce
on t
he ir
on
1c
4/1d
3/1d
acce
pt ‘i
t hi
t th
e bo
ttom
’ac
cept
‘the
pap
er c
up c
ould
not
go
any
furt
her’
* 12
any
on
efr
om*
the
pape
r cu
p st
oppe
d m
ovin
g*
the
pape
r cu
p re
ache
d th
e bo
ttom
mag
net
1 1
b i
1/2j
b ii
1/2k
answ
ers
may
be
in e
ither
ord
er
don
ot
acce
pt‘a
ir re
sist
ance
’
acce
pt ‘w
eigh
t’ac
cept
‘rep
ulsi
on’o
r‘u
pthr
ust’
* gr
avity
* m
agne
tic fo
rce
or
mag
netis
m1 1
a4/
2b4/
1d
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er T
wo
48
Q N
o12 3
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
* a
stra
ight
line
of
best
fit
betw
een
som
e of
the
poin
ts1
e1/
2i
* 6
poin
ts c
orre
ctly
plo
tted
to t
he n
eare
st h
alf
squa
re1
d1/
2i
acce
pt ‘t
he li
ne is
zig
-zag
’ac
cept
‘the
y jo
ined
up
all t
he p
oint
s’ac
cept
‘the
y di
dn’t
go b
etw
een
the
poin
ts’
acce
pt ‘t
he li
ne d
oes
not
need
to
goth
roug
h al
l the
poi
nts’
* th
e lin
e is
not
str
aigh
t (c
onve
rse)
* th
e lin
e sh
ould
be
stra
ight
1c
1/2p
acce
pt ‘t
hey
did
not
mea
sure
tem
pera
ture
’
acce
pt ‘n
o in
form
atio
n ab
out
tem
pera
ture
’ac
cept
‘no
tem
pera
ture
’
* th
ey h
ave
not
colle
cted
dat
a ab
out
tem
pera
ture
* no
dat
a re
cord
ed a
bout
tem
pera
ture
1b
1/2o
‘tem
pera
ture
’is
insu
ffici
ent
do n
ot a
ccep
t ‘si
ze o
f ro
om’
acce
pt ‘s
ame
amou
nt o
f dr
augh
ts’
acce
pt ‘a
mou
nt o
f w
ater
’ac
cept
‘sha
pe o
rsi
ze o
rm
ater
ial o
f co
ntai
ner’
acce
pt ‘t
he t
ime
it is
left
for’
any
two
from
* in
itial
tem
pera
ture
of
wat
er*
excl
usio
n of
dra
ught
s*
volu
me
or
mas
s of
wat
er*
surf
ace
area
(of
wat
er)
* hu
mid
ity
2a
1/2d
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er T
wo
49
Q N
o12 3
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l7
acce
pt ‘t
here
is le
ss w
ater
in t
he c
onta
iner
inro
om 2
tha
n in
roo
m 1
’ac
cept
‘am
ount
of
wat
er d
ropp
ed m
ore
in t
he f
irst
thre
e da
ys’
acce
pt ‘t
he li
ne fo
r ro
om 2
is s
teep
er’
acce
pt ‘t
he n
umbe
rs g
o do
wn
mor
e qu
ickl
y’ac
cept
‘the
mas
s go
es d
own
mor
e qu
ickl
y’
✓ro
om 2
and
* th
e po
ints
for
room
2 a
re lo
wer
tha
n ro
om 1
* th
e co
ntai
ner
in r
oom
2 r
each
es 3
0g in
5 d
ays,
room
1 r
each
es 4
5g*
mor
e w
ater
eva
pora
ted
in t
he s
ame
time
* th
e vo
lum
e go
es d
own
mor
e qu
ickl
y
1f
1/2k
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er T
wo
50
Q N
o13 4
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l7
don
ot
acce
pt‘g
erm
s’
acce
pt ‘t
o br
eak
dow
n fo
od’
any
on
efr
om*
with
out
it di
gest
ion
wou
ld s
top
or
slow
dow
n*
acid
is n
eede
d fo
r di
gest
ion
* th
e en
zym
es o
nly
wor
k in
aci
d co
nditi
ons
or
ata
low
pH
* it
is n
eede
d to
kill
bac
teria
or
mic
robe
s
1d
2/2b
if m
ore
than
tw
o bo
xes
are
ticke
d, d
educ
t on
em
ark
for
each
inco
rrec
t tic
km
inim
um m
ark
zero
* a
com
poun
d✓
* a
salt
✓1 1
c3/
1e3/
3e
don
ot
acce
pt‘a
ll th
e m
agne
sium
car
bona
te w
asus
ed u
p’
acce
pt ‘c
arbo
n di
oxid
e o
ra
gas
is p
rodu
ced’
acce
pt ‘t
he a
cid
had
been
neu
tral
ised
’
* ca
rbon
dio
xide
is g
as
any
on
efr
om*
no m
ore
carb
on d
ioxi
de o
rga
s w
as p
rodu
ced
* th
e re
actio
n st
oppe
d*
all t
he h
ydro
chlo
ric a
cid
was
use
d up
* th
ere
was
an
exce
ss o
f m
agne
sium
car
bona
teo
rca
rbon
ate
1 1
b i
3/3e b ii
3/3f
acce
pt ‘o
rang
e’o
r‘y
ello
w’
acce
pt ‘0
’
* re
d o
rpi
nk
* an
y nu
mbe
r gr
eate
r th
an 0
and
sm
alle
r th
an 7
1 1
a i
3/3d a ii
3/3d
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er T
wo
51
Q N
o14 5
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l5
bo
than
swer
s ar
e re
quire
d fo
r th
e m
ark
*th
e bi
ceps
cont
ract
sth
e tr
icep
sre
laxe
s1
d2/
2e
acce
pt ‘i
t re
duce
s fr
ictio
n’
acce
pt ‘i
t ca
n be
squ
ashe
d’ac
cept
‘it
abso
rbs
shoc
k’
any
on
efr
om*
to s
top
the
bone
s ru
bbin
g to
geth
er*
to s
top
bone
s ge
tting
wor
n do
wn
* to
cus
hion
the
bon
es
1c
2/2e
any
on
efr
om*
so t
hat
it ca
n be
nd*
to a
llow
mov
emen
t
1b
2/2e
don
ot
acce
pt‘v
erte
brae
’*
vert
ebra
tes
* re
ptile
s
1 1
a i
2/4b a ii
2/4b
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er T
wo
52
Q N
o15 6
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l5
acce
pt ‘d
ata
from
ano
ther
yea
r o
rla
st y
ear’
acce
pt ‘m
ore
data
or
data
fro
m t
he t
ime
whe
n hi
s gr
anda
d w
as y
oung
’
acce
pt ‘d
ata
from
whe
n hi
s gr
anda
d w
as
youn
g is
not
ava
ilabl
e’
acce
pt ‘m
ore
spar
row
s w
ould
nee
d to
be
reco
rded
in e
arlie
r ye
ars
than
in 2
002’
any
on
efr
om*
they
wou
ld n
eed
to lo
ok a
t th
e pa
ttern
in
the
data
for
mor
e th
an a
yea
r*
they
wou
ld n
eed
to c
ompa
re d
ata
colle
cted
in a
noth
er y
ear
with
tha
t av
aila
ble
in 2
002
* da
ta w
ould
nee
d to
sho
w fe
wer
spa
rrow
s in
2002
tha
n in
ear
lier
year
s
1 1
c i
1/2e c ii
1/1b
‘the
envi
ronm
ent’
is in
suffi
cien
t
acce
pt ‘t
he t
ime’
for
one
mar
k if
‘tim
e of
yea
r’o
r‘s
easo
n’o
r‘d
urat
ion’
is n
ot g
iven
any
two
from
* tim
e of
yea
r o
rse
ason
* lo
catio
n o
rga
rden
s*
dura
tion
of t
he o
bser
vatio
n
2b
1/2d
acce
pt ‘o
ne p
erso
n co
uld
mak
e it
up’
acce
pt ‘o
ne g
arde
n m
ay n
ot b
e ty
pica
l’
any
on
efr
om*
a bi
gger
sam
ple
* m
ore
data
are
col
lect
ed in
the
sur
vey
1a
1/2h
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er T
wo
53
Q N
o16 7
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l7
* B
1c
2/1c
‘it is
a s
elf
clea
ning
mec
hani
sm’i
s in
suffi
cien
t
don
ot
acce
pt‘th
ey c
lean
dus
t o
rba
cter
ia o
ut o
fth
e lu
ngs’
acce
pt ‘l
ungs
’
acce
pt ‘t
o re
mov
e ba
cter
ia’
acce
pt ‘t
o m
ove
muc
us a
long
’ac
cept
‘to
mov
e o
rre
mov
e ba
cter
ia o
rdu
stpa
rtic
les’
acce
pt ‘t
o m
ove
an o
vum
or
egg
alon
g’if
the
ovid
uct
or
fallo
pian
tub
e is
giv
en a
s th
e an
swer
to
par
t ii
* A
any
on
efr
om*
win
dpip
e*
trac
hea
* ai
rway
s*
bron
chus
* br
onch
iole
* ov
iduc
t o
rfa
llopi
an t
ube
* to
rem
ove
muc
us
1 1 1
b i
2/1c b ii
2/1c
b ii
i2/
1e
answ
ers
may
be
in a
ny o
rder
bo
than
swer
s ar
e re
quire
d fo
r th
e m
ark
acce
pt ‘t
o m
ake
gluc
ose
or
suga
ro
rst
arch
or
carb
ohyd
rate
or
food
’
* C
and
E
* C
any
on
efr
om*
to t
rap
or
abso
rb li
ght
* ph
otos
ynth
esis
1 1 1
a i
2/1b a ii
2/1b
a iii
2/1b
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
–6 a
nd
5–7
Pap
er T
wo
54
Q N
o17 8
Tie
r3–
65–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l4
acce
pt ‘m
ore
obse
rvat
ions
’ac
cept
‘new
evi
denc
e’
acce
pt ‘o
ld id
eas
do n
ot w
ork
or
fit d
ata’
any
on
efr
om*
new
evi
denc
e w
hich
cha
lleng
es id
eas
may
be
colle
cted
* th
ere
mig
ht b
e a
new
way
of
thin
king
ab
out
how
the
fact
s fit
tog
ethe
r*
new
inte
rpre
tatio
ns o
f ev
iden
ce*
old
idea
s do
not
exp
lain
the
obs
erva
tion
1d
1/1c
acce
pt ‘w
e pr
obab
ly d
o no
t kno
w e
very
thin
g ab
out
the
sola
r sy
stem
’
any
on
efr
om*
our
know
ledg
e is
incr
easi
ng
* ou
r kn
owle
dge
is c
hang
ing
1c
1/1a
a m
ark
may
be
awar
ded
for
a de
scrip
tion
of a
spe
cific
way
info
rmat
ion
is d
iffer
ent o
r a
desc
riptio
n of
a s
peci
fic w
aypr
evio
us li
mita
tions
are
red
uced
acce
pt ‘e
quip
men
t ca
n la
nd o
n th
e pl
anet
’
acce
pt ‘t
eles
cope
s ca
n be
site
d ou
tsid
e E
arth
’s a
tmos
pher
e’
any
on
efr
om*
data
fro
m f
urth
er a
way
can
be
colle
cted
* da
ta f
rom
fain
ter
obje
cts
or
smal
ler
deta
ils
can
be c
olle
cted
* da
ta is
cle
arer
bec
ause
the
re is
no
atm
osph
eric
dis
tort
ion
* m
ore
info
rmat
ion
is c
olle
cted
* m
ore
deta
iled
or
mor
e ac
cura
te
info
rmat
ion
* w
ider
spe
ctru
m o
f in
form
atio
n in
clud
ing
phot
ogra
phs
or
pict
ures
of
plan
et*
othe
r ra
diat
ion
can
be d
etec
ted
1b
1/1c
if m
ore
than
one
box
is t
icke
d, a
war
d no
mar
k*
He
obse
rved
the
env
ironm
ent.
✓1
a1/
1c
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5–
7 P
aper
Tw
o
55
Q N
o9
Tie
r5–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l4
don
ot
acce
pt‘th
e fo
rwar
d fo
rce
beco
mes
gr
eate
r o
rin
crea
ses’
‘she
is m
ore
stre
amlin
ed’i
s in
suffi
cien
t as
it is
give
n in
the
que
stio
n
acce
pt t
he c
onve
rse
acce
pt ‘t
he fo
rwar
d fo
rce
is g
reat
er’o
r‘th
eba
ckw
ard
forc
e is
sm
alle
r’
acce
pt ‘l
ess
fric
tion’
* th
e fo
rwar
d fo
rce
is g
reat
er t
han
the
back
war
dfo
rce
any
on
efr
om*
beca
use
air
resi
stan
ce o
rdr
ag is
sm
alle
r o
rre
duce
d*
beca
use
ther
e is
a s
mal
ler
surf
ace
area
1 1
b4/
2d4/
2c
the
unit
is r
equi
red
for
the
mar
k
don
ot
acce
pt‘m
ps’
acce
pt ‘
400
m/s
’32
acce
pt ‘m
etre
s pe
r se
cond
’or
‘ms-
1 ’fo
r m
/s
acce
pt ‘t
hey
are
bala
nced
’
* 12
.5 m
/s
* th
ey a
re e
qual
or
the
sam
e
1 1
a i
4/2a a ii
4/2c
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5–
7 P
aper
Tw
o
56
Q N
o10
Tie
r5–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l5
acce
pt ‘
180
’12
* a
grap
h st
artin
g af
ter
6 am
and
end
ing
befo
re
6 pm
* a
line
belo
w t
he e
xist
ing
line
and
flat
or
reac
hing
a m
axim
um b
etw
een
12 n
oon
and
1 pm
* 15
1 1 1
b i
4/4a b ii
1/2k
don
ot
acce
pt‘in
the
mid
dle
of t
he d
ay t
he S
un is
hotte
sto
rbr
ight
est’
acce
pt ‘t
he S
un a
ppea
rs t
o m
ove
acro
ss t
he s
ky’
acce
pt ‘t
he S
un is
in a
diff
eren
t po
sitio
n at
diffe
rent
tim
es o
f da
y’ac
cept
‘diff
eren
t cl
oud
cove
r’
acce
pt ‘i
n th
e m
iddl
e of
the
day
the
ene
rgy
rece
ived
is g
reat
est’
acce
pt a
ny n
umbe
r fr
om 5
.8 t
o 6.
2
any
on
efr
om*
the
Ear
th r
otat
es
* th
e am
ount
of
sunl
ight
var
ies
* th
e an
gle
of t
he S
un v
arie
s
* 6.
0
1 1
a i
4/4a a ii
1/2j
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5–
7 P
aper
Tw
o
57
Q N
o11
Tie
r5–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l5
acce
pt ‘9
’*
9.0
1b
1/2j
pupi
ls c
an g
ain
cred
it fo
r co
rrec
t re
spon
ses
to o
ther
par
ts if
the
axes
are
wro
ngly
labe
lled
this
mar
k ca
nnot
be
awar
ded
for
a no
n-lin
ear
scal
e
don
ot
acce
pta
line
draw
n fr
om p
oint
to
poin
t
* vo
lum
e or
alk
ali i
n cm
3on
the
x a
xis
and
pH o
f m
ixtu
re o
n th
e y
axis
* ap
prop
riate
sca
les
for
volu
me
of a
lkal
i an
d pH
of
mix
ture
* 11
poi
nts
corr
ectly
plo
tted
* sm
ooth
cur
ve o
f be
st f
it
1 1 1 1
a1/
2i
Q N
o12
Tie
r5–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l6
answ
ers
may
be
in e
ither
ord
erb
oth
answ
ers
are
requ
ired
for
the
mar
k
acce
pt ‘a
lmos
t ze
ro’o
r‘v
ery
smal
l’
acce
pt ‘t
hey
are
the
sam
e’
* co
pper
* 0
any
on
efr
om*
two
bloc
ks o
f th
e sa
me
met
al h
ave
the
sam
ere
activ
ity*
ther
e is
no
diffe
renc
e in
rea
ctiv
ity
* ni
ckel
and
tin
1 1 1 1
b i
3/3c b ii
3/3c
b ii
i3/
3c
*m
agne
sium
:M
g*
copp
er:C
u1 1
a3/
1c
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5–
7 P
aper
Tw
o
58
Q N
o13
Tie
r5–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l4
acce
pt ‘g
luco
se d
oes
not
need
to
be d
iges
ted’
any
on
efr
om*
gluc
ose
can
be a
bsor
bed
* st
arch
mol
ecul
es c
anno
t be
abs
orbe
d*
it ta
kes
time
for
star
ch t
o be
bro
ken
dow
n*
star
ch h
as t
o be
dig
este
d o
rbr
oken
dow
n
1b
2/2b
2/2c
don
ot
acce
pt‘fo
otba
ll is
ene
rget
ic’
‘it s
low
s th
em d
own’
is in
suffi
cien
t
acce
pt ‘f
ootb
all i
s m
ore
ener
getic
’ac
cept
‘you
run
mor
e in
foot
ball’
acce
pt ‘s
he is
usi
ng u
p m
ore
kJ’
acce
pt ‘p
layi
ng fo
otba
ll us
es 2
260
kJ/h
r an
dbo
wlin
g us
es 1
030
kJ/h
r’
acce
pt ‘i
t sl
ows
reac
tions
’or
‘it s
low
s th
e re
actio
n tim
e’ac
cept
‘the
y w
ould
feel
diz
zy’
acce
pt ‘t
hey
wou
ld b
e sl
eepy
or
drow
sy’
acce
pt ‘a
lcoh
ol m
akes
the
m lo
se m
ore
heat
’ac
cept
‘it
caus
es b
lurr
ed v
isio
n’
* fo
otba
ll re
quire
s m
ore
ener
gy t
han
bow
ling
any
two
from
* al
coho
l inc
reas
es t
he r
eact
ion
time
* al
coho
l red
uces
co-
ordi
natio
n*
alco
hol c
ause
s o
rin
crea
ses
erro
rs o
f ju
dgem
ent
* al
coho
l red
uces
con
cent
ratio
n
1 2
a i
2/2d a ii
2/2m
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5–
7 P
aper
Tw
o
59
Q N
o14
Tie
r5–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
acce
pt ‘s
peci
es’
any
on
efr
om*
the
num
ber
of s
peci
es o
f gr
ass
* di
ffere
nt s
peci
es*
type
of
plan
t o
rse
edo
rgr
ass
1d
1/2d
bo
than
swer
s ar
e re
quire
d fo
r th
e m
ark
‘am
ount
of
plan
ts’i
s in
suffi
cien
t*
the
num
ber
of p
lant
s o
rgr
asse
s an
dth
e m
ass
of p
lant
s o
rgr
ass
1c
1/2d
‘to f
ind
an a
vera
ge’i
s in
suffi
cien
tac
cept
‘to
mak
e th
e re
sults
mor
e ac
cura
te’
acce
pt ‘s
ome
of t
he p
lots
cou
ld b
e un
usua
l o
rdi
ffere
nt’
any
on
efr
om*
to in
crea
se t
he r
elia
bilit
y of
the
res
ults
* to
be
mor
e ce
rtai
n of
his
res
ults
1b
1/2h
acce
pt ‘t
he a
mou
nt o
f la
nd’
* th
e si
ze o
rar
eao
rdi
men
sion
s of
the
pl
ots
1a
1/2d
2004
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5–
7 P
aper
Tw
o
60
Q N
o14
Tie
r5–
7
Par
tM
ark
An
swer
Acc
ept
Ad
dit
ion
al g
uid
ance
Tota
l6
any
on
efr
om*
diffe
rent
spe
cies
hav
e di
ffere
nt
requ
irem
ents
so
they
are
not
com
petin
g fo
r th
e sa
me
reso
urce
s*
com
petit
ion
mig
ht s
timul
ate
mor
e vi
goro
us g
row
th*
one
spec
ies
may
be
bette
r ad
apte
d to
the
pl
oto
rco
nditi
ons
* yo
u w
ould
get
con
tinuo
us g
row
th
thro
ugho
ut t
he y
ear
1f
2/5d
1/2m
acce
pt ‘t
o m
ake
sure
or
so it
wou
ld b
e fa
ir’
acce
pt ‘t
o ch
eck
whe
ther
soi
ls h
ad a
n ef
fect
on
gro
wth
’
any
on
efr
om*
his
anal
ysis
wou
ld a
llow
the
effe
cts
of
soil
diffe
renc
es t
o be
con
trol
led
or
expl
aine
d*
to p
rovi
de e
vide
nce
of a
ny d
iffer
ence
be
twee
n so
ils*
the
anal
ysis
wou
ld p
rovi
de m
ore
evid
ence
* to
che
ck w
heth
er s
oils
wer
e th
e sa
me
ordi
ffere
nt
1e
1/1c
EARLY YEARS
NATIONALCURRICULUM5–16
GCSE
GNVQ
GCE A LEVEL
NVQ
OTHERVOCATIONALQUALIFICATIONS
259586
First published in 2004
© Qualifications and Curriculum Authority 2004
Reproduction, storage, adaptation or translation, in any form or by any means, of this
publication is prohibited without prior written permission of the publisher, unless
within the terms of licences issued by the Copyright Licensing Agency. Excerpts may
be reproduced for the purpose of research, private study, criticism or review, or by
educational institutions solely for educational purposes, without permission, provided
full acknowledgement is given.
Produced in Great Britain by the Qualifications and Curriculum Authority under the
authority and superintendence of the Controller of Her Majesty’s Stationery Office and
Queen’s Printer of Acts of Parliament.
The Qualifications and Curriculum Authority is an exempt charity under Schedule 2 of
the Charities Act 1993.
Qualifications and Curriculum Authority
83 Piccadilly
London
W1J 8QA
www.qca.org.uk/
Further teacher packs may be purchased (for any purpose other than statutoryassessment) by contacting:QCA Publications, PO Box 99, Sudbury, Suffolk CO10 2SN
(tel: 01787 884444; fax: 01787 312950)
Order ref: QCA/04/1206