Year 7 Science

HOMEWORK

BOOK

Worksheet 1

Find-a-word

H A M T A X O N O M Y O A L R O E R E I S U N E G E A T N A L P T O A K M E L A R C H A E A T R E A C I H P O R T O T U A E E N R B A C T E R I A S X N N D N U O U S O P H Y L U M O A R R U L T E S E R O P K L Y E O Y F N K R O A G T T G N I A N S I C H I O A L E U N I C E L L U L A R N P T C E R T N E F A M I L Y A G H S E G I F U N G I C L O A O D I I M U L T I C E L L U L A R O C T A I L A M I N A A E O E O M I O C J W D O M A I N T A L H E T R I T J H L D F S P E C I E S O P I U L E U B A C T E R I A S

Animalia

Archaea

Autotrophic

Bacteria

Class

Domain

Eubacteria

Family

Fungi

Genus

Heterotrophic

Kingdom

Multicellular

Order

Phylum

Plantae

Protista

Species

Taxonomy

Unicellular

Worksheet 2

Grouping Here is a list of living things.

dolphin

mushroom

goanna

tree

seaweed

stonefish

flower

crab

cactus

elephant

jellyfish

carrot

snail

fern

whale

toad

emu

worm

1. Organise them into two groups.

GROUP 1 GROUP 2

2. Which characteristics did you use to decide how to group these living things? ................................................................................................................................................................................................................................................................................................................

3. Now organise your GROUP 1 living things into a further two groups.

4. Which characteristics did you use to decide how to group them this time? ................................................................................................................................................................................................................................................................................................................

5. Now organise your GROUP 2 living things into a further two groups.

6. Which characteristics did you use to decide how to group them this time? ........................................................................................................................................................ ........................................................................................................................................................

Worksheet 3

Dichotomous keys Look at the following key for classifying students in a class.

1. Name the students who can roll their tongue, but do not have blue eyes.

........................................................................................................................................................

2. What do Louise and Stuart have in common?

........................................................................................................................................................

3. How many students cannot roll their tongue and do not have blue eyes?

........................................................................................................................................................

Worksheet 4

Scientific naming

All students

Students who can roll their tongue

Students who cannot roll their tongue

Blue eyes Blue eyes Non-blue eyes Non-blue eyes

Stuart Richardo Michael Lee Sun Petra

Louise Susan Denita

Kym David Maria Gustav

Ian

Wendy Mark Spiro

Worksheet 5

Plant and animal cells

Worksheet 6

Microscope

Worksheet 7

Converting units

In the metric system, converting from one prefix to the next prefix is a simple matter of multiplying or dividing by 10. Note that this does not work when the units are squared (2) or cubed (3) as in area and volume measurements. When the prefixes get smaller, multiply by 10 for each step. × 10 × 10 × 10 × 10 × 10 × 10 × 10

mega- kilo- hecto- deca- no prefix deci- centi- milli-

When the prefixes get larger, divide by 10 for each step. ÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10 ÷ 10

mega- kilo- hecto- deca- no prefix deci- centi- milli-

1 Change the following measurements using the units given. The first two have been done for you.

Measurement Convert to Conversion Answer 2 megalitres kilolitres 2 x 10 200 kL

20 milligrams grams 20 ÷ 10 ÷ 10 ÷ 10 0.02 g

3 kilopascals hectopascals

5.4 centimetres millimetres

0.7 millilitres litres

650 millimetres decimetres

12 000 watts kilowatts

97 000 millilitres decalitres