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It is recommended that you have completed at least two of the following stations before working at this station.-Read It!-Explore It!-Watch It!-Research It!
Answer each of the task card questions on the lab sheet in complete sentences.
Write It! Station Directions
Describe what polarity means in terms of being a property of water?
During the winter, many ponds and lakes freeze over. What properties of water allows the organisms to survive underneath the ice? Explain in detail how this happens.
What is evaporation and how does it contribute to the survival of species?
It is recommended that you have completed at least two of the following stations before working at this station.-Read It!-Explore It!-Watch It!-Research It!
Each member will answer the questions from the task cards on the lab sheet in the Assess It! section.
Assess It! Station Directions
Which is a good example of the property of water called surface tension?
A. Some organisms are adapted to walk or land on water.
B. Plants are able to survive through capillary action.
C. Ice is less dense than water and floats on the surface.
D. Water evaporates on the surface of our skin to release heat.
Which best illustrates the electrical charge of a water molecule?
A. DensityB. Specific HeatC. EvaporationD. Cohesion and adhesion
Plants are able to use water for survival through a process called capillary action. Which property of water is responsible for this process?
Which answer best describes cohesion?
A. Water is polar which allows molecules to bond together and ‘stick’ to each other.
B. One water molecule is held to another molecule through covalent bonding.
C. Cohesion is the property of water that allows liquid to be changed into gases.
D. Water molecules all have a positive charge and ‘stick’ to each other.
A. B.
D.C.
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- - +++
+ -
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Each member of the group will read the passage and answer the questions from the task cards on the lab sheet in the Read It! section.
It is important to remember that the answers will come directly from the reading passage.
Read It! Station Directions
Cap
illary
Act
ion
Even
if y
ou'v
e ne
ver h
eard
of c
apilla
ry a
ctio
n, it
is st
ill im
porta
nt in
yo
ur lif
e. C
apilla
ry a
ctio
n is
impo
rtant
for m
ovin
g w
ater
(and
all t
he
thin
gs th
at a
re d
issol
ved
in it
) aro
und.
It i
s def
ined
as t
he m
ovem
ent
of w
ater
with
in th
e sp
aces
of a
por
ous m
ater
ial d
ue to
the
forc
es o
f ad
hesio
n, c
ohes
ion,
and
surfa
ce te
nsio
n.
Cap
illary
act
ion
occu
rs be
caus
e w
ater
is st
icky
, tha
nks t
o th
e fo
rces
of
cohe
sion
(wat
er m
olec
ules
like
to st
ay c
lose
toge
ther
) and
adh
esio
n (w
ater
mol
ecul
es a
re a
ttrac
ted
and
stic
k to
oth
er su
bsta
nces
).
Adh
esio
n of
wat
er to
the
wal
ls of
a v
esse
l will
caus
e an
upw
ard
forc
e on
the
liqui
d at
the
edge
s and
resu
lt in
a m
enisc
us w
hich
turn
s up
war
d. T
he su
rface
tens
ion
acts
to h
old
the
surfa
ce in
tact
.
Cap
illary
act
ion
occu
rs w
hen
the
adhe
sion
to th
e w
alls
is st
rong
er
than
the
cohe
sive
forc
es b
etw
een
the
liqui
d m
olec
ules
. Th
e he
ight
to
whi
ch c
apilla
ry a
ctio
n w
ill ta
ke w
ater
in a
uni
form
circ
ular
tube
is
limite
d by
surfa
ce te
nsio
n an
d, o
f cou
rse, g
ravi
ty.
Not
onl
y do
es w
ater
tend
to st
ick
toge
ther
in a
dro
p, b
ut it
also
stic
ks
to g
lass
, clo
th, o
rgan
ic ti
ssue
s, so
il, an
d, lu
ckily
, to
the
fiber
s in
a pa
per
tow
el.
Dip
a p
aper
tow
el in
to a
gla
ss o
f wat
er a
nd th
e w
ater
will
"clim
b" o
nto
the
pape
r tow
el.
In fa
ct, i
t will
keep
goi
ng u
p th
e to
wel
un
til th
e pu
ll of g
ravi
ty is
too
muc
h fo
r it t
o ov
erco
me.
Cap
illary
act
ion
is al
l aro
und
us e
very
day
. Whe
n yo
u sp
ill yo
ur g
lass
of
Bubb
lyBe
rryPo
wer
Go
(whi
ch is
, of c
ourse
, mos
tly w
ater
) on
the
kitc
hen
tabl
e, y
ou ru
sh to
get
a p
aper
tow
el to
wip
e it
up.
First
, you
can
than
k su
rface
tens
ion,
whi
ch k
eeps
the
liqui
d in
a n
ice
pudd
le o
n th
e ta
ble,
in
stea
d of
a th
in fi
lm o
f sug
ary
goo
that
spre
ads o
ut o
nto
the
floor
.
Whe
n yo
u pu
t the
pap
er to
wel
ont
o yo
ur m
ess,
the
liqui
d ad
here
s its
elf
to th
e pa
per f
iber
s and
the
liqui
d m
oves
to th
e sp
aces
bet
wee
n an
d in
side
of th
e fib
ers.
Plan
ts a
nd tr
ees c
ould
n't t
hriv
e w
ithou
t cap
illary
act
ion.
Pla
nts p
ut
dow
n ro
ots i
nto
the
soil w
hich
can
car
ry w
ater
from
the
soil u
p in
to th
e pl
ant.
Wat
er, w
hich
con
tain
s diss
olve
d nu
trien
ts, g
ets i
nsid
e th
e ro
ots
and
star
ts c
limbi
ng u
p th
e pl
ant t
issue
. As w
ater
mol
ecul
e #
1 st
arts
cl
imbi
ng; i
t pul
ls al
ong
wat
er m
olec
ule
#2,
whi
ch, o
f cou
rse, i
s dr
aggi
ng w
ater
mol
ecul
e #
3, a
nd so
on.
Which best describes capillary action?
A. Evaporation allows plants to get rid of excess heat for survival.
B. The specific heat of water maintains an equilibrium in plants.
C. The density of water pushes water up the stems of plants.
D. Water molecules are attracted to each other and stick together.
If water didn’t have cohesive and adhesive properties which outcome is likely?
A. Life on Earth would not exist.B. Plants would adapt find another source
for survival.C. Plants wouldn’t exist but humans would.D. Small plants could still get water, but large
trees would die off.
Capillary action happens when ______________.
A. A plant obtaining water in the ground for survival
B. A paper towel absorbing up a spillC. Plant absorbing CO2 through stomataD. A mop absorbing water from puddle
on the ground
Which is not an example of capillary action?
A. gravity is stronger than adhesionB. adhesion to the wall is stronger than the
cohesive forces between the moleculesC. the surface tension breaks and gravity takes
overD. adhesion to the wall is weaker than the
cohesive forces between the molecules
Each member of the group will go to the website listed on task card #1
Complete the task cards in order.
Every student will answer the questions from the task cards on the lab sheet in the Watch It! section of the lab sheet.
Watch It! Station Directions
YouTube https://goo.gl/MkKy7dCloud https://goo.gl/DWQgq
URL is case-sensitive
Describe what a hydrogen bond is.
What is surface tension?
1. Click Play on the video.2. Answer questions from cards
#2-4 on your lab sheet.
YouTube
List two examples from the video of how the properties of water are important to life on Earth.
Each member of the group will go to the website listed on task card #1
Complete the task cards in order.
Every student will answer the questions from the task cards on the lab sheet in the Research It! section.
Research It! Station Directions
Go to http://bit.ly/waterpropertiesstation
1. Take the T/F quiz and record your score on the lab sheet.
2. Investigate any answers about water property that you got incorrect and write down the definition of the property in question.
3. Retake the quiz and write your new score.
One member of the group will read the task cards in order. The group will be responsible for completing each of the tasks that are being read.
Each member of the group will then write their conclusions down on the lab sheet in the Explore It! section.
Explore It! Station Directions
1. Place a penny in the center of a clean paper towel or napkin.
2. Use the pipette to add as many drops of pure water to the surface of the penny as you can. Count them as you add.
You will be learning about a few of the properties of water in this exploration.
1. How many drops were you able to add?
2. Why do you think the water doesn’t spill over the penny earlier?
3. Does flipping the coin over change the number of drops? Why?
1. Place a penny in the center of a clean paper towel or napkin.
2. Use the pipette to add as many drops of soapy water to the surface of the penny as you can. Count them as you add.
Now let’s try the same experiment with a different substance.
1. How many drops were you able to add?
2. Was this less ore more than the previous experiment?
3. What do you think caused this change and why?
This is referred to as polarity and allows water molecules to bond to each other through a weak link called a hydrogen bond.
Although water has an overall neutral charge, the actual structure has two slightly positive Hydrogen atoms on one end and one slightly negative Oxygen atom on the other end. The attraction of water to another polar
surface (in this case the penny) is called adhesion.
1. Where else have you seen examples of cohesion and adhesion?
There are two types of ‘stickiness’ happening in this experiment. The attraction between the water molecules is called cohesion.
Soap decreases the surface tension by changing the way the water behaves at the surface.
1. Explain the difference between cohesion and adhesion.
2. Explain what surface tension is.
Cohesion allows for the hydrogen bonds on the surface of the water to create a “skin” which resists external forces. This is called surface tension.
Each member of the group will draw a quick sketch on the lab sheet the shows they understand the concept that is being taught.
Use the colored pencils and markers that are provided.
The directions for the sketch are provided on the task card at the table.
Illustrate It! Station Directions
You will need to do the research station before completing this station.
Draw a model of 4 water molecules that are bonded together.
You will need to color code and label the covalent bonds and hydrogen bonds between the atoms and molecules.
Also label the element that each atom represent (or use a key).
If necessary, use the computer or device to help you with your model.
Illustrate It! Station Directions
It is recommended that you have completed at least twoof the following stations before working at this station.-Read It!-Explore It!-Watch It!-Research It!
Each group will organize the cards. Each of the cards will be used. Once you are complete please have the teacher sign off on your lab sheet.
Please mix up the cards again before the next group arrives at this station.
Organize It! Station Directions