Science Ks3

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Can You Remember?KS2 Science

Photocopiable worksheets for use inclass or when revising for SATS exams.


Can You Remember Science?

CAN YOU REMEMBER... ABOUT LIVING THINGS?

1Name: _____________________________

1

Living things all share these features:

2

John argues that animals can move but plants cannot. Is John correct?

3

Here is a cross-section of a school pond. Explain how each of the livingthings here is adapted to live in this habitat.

pond snail

pond weed

water lily

heron

4

How do land snails and pond snails differ and why?



CAN YOU REMEMBER... ABOUT LIVING THINGS?

2Name: _____________________________

5

Why do trees not tend to grow well under other trees? Give two reasons.

6

Why might some plants, like daisies, grow better under trees than in thecentre of lawns during a very hot period?

7

Explain the adaptations of the following to their habitats:

frogs

polar bears

whales

camels

8

Living things that are too small to be seen by eye are called ____________-

__________________ . Some of them are helpful, for example those that help

to make ___________________ and ___________________ . Others are harmful,

for example ___________________ and ___________________ .

Most bacteria are killed at 100°C, so using boiling water is a good way ofgetting rid of bacteria.

beer sweets viruses micro-organisms yoghurt bacteria



CAN YOU REMEMBER... ABOUT PLANTS?

3Name: _____________________________

1

Plants must have these two main things to grow.

2

If you were to grow some new seeds from a packet, you would need toprovide at least three things for them to germinate. List three suitableconditions for growth.

3

Kate waters her plants regularly and knows that they need light in orderto grow. She places two of her plants on the windowsill and two on a tablein her living room. She is surprised to find that those on the windowsillare growing less well on the windowsill, even though they get more lightand the same amount of water as the plants in the room. Give two possiblereasons for this.

4

Label this diagram with the parts of a flowering plant.

a) petals

b) anther

c) stigma

d) style

e) ovary

f) sepals

g) stamen

Put the correct letters in each circle.



CAN YOU REMEMBER... ABOUT PLANTS?

4Name: _____________________________

4

Flowers make seeds in order to reproduce. Say what each of theseparts of a flowering plant does in order to help a seed to be made.

5

In order for plants to reproduce by making seeds, two steps are needed.FIRST THE PLANT IS POLLINATEDNEXT FERTILISATION OCCURS

Explain pollination:

Explain fertilisation:

6

The roots of a plant serve two main purposes. Explain them.

PART OF PLANT WHAT IT DOES TO HELP MAKE SEEDS

petal

anther

stigma

ovary



CAN YOU REMEMBER... ABOUT DIET & HEALTH?

5Name: _____________________________

1

In order to be healthy you need to eat a balanced diet. There are four mainfood groups and each of these helps your body to be healthy in a particularway. You should also know a few examples of foods in each group.Complete the table below to name the food groups, what they do for yourbody and to give some examples.

2

There are two types of carbohydrate. Explain the differences between them.

3

If you take in more energy in your food than you use, what happens tothis extra energy?

NAME OF FOOD HOW THIS FOOD GROUP EXAMPLES OF FOODGROUP HELPS ME TO STAY IN THIS GROUP

STAY HEALTHY

vitaminsand minerals

carbohydrates

fats

helps my body to growand repair itself bymaking new cells



CAN YOU REMEMBER... ABOUT DIET & HEALTH?

6Name: _____________________________

4

If you eat too much of one type of food, you can have problems. There arealso problems if you do not live a healthy life. Give a problem that mightbe caused by:

5

Explain how doing these things might not just harm the person taking thedrug but also others.

a) smoking cigarettes

b) drinking alcohol

6

To stay healthy we need to keep our teeth clean.

Teeth help us to ______________ our food which makes

it easier to ______________ and ________________ .

When we eat foods, especially those that contain sugar,

________________ is created on our teeth. This not only damages our teeth

but provides an excellent home for bacteria to breed and damage our teeth.

We call bacteria and food remains ________________ .

Calcium strengthens bones and teeth. Calcium can be found in dairy products.

a) eating too much animal fat

b) smoking (give at least two)

c) alcohol in the short term

d) alcohol after several years of heavy drinking

plaque chew enamel swallow acid digest



CAN YOU REMEMBER... ABOUT HUMANS?

7Name: _____________________________

1

Complete the paragraphs on this page.

The heart is made up of _______________ and _______________ chambers.

One side of the heart pumps blood to the _______________ and the other

side of the heart pumps blood to the _______________ to pick up

_______________ .

2

Our heart is part of the circulatory system.

Blood flows from the _______________ into

blood vessels called _______________ . The

oxygen from the blood passes out into the

body’s cells through tiny blood vessels that

are only one cell thick, we call them

_______________ . Blood flows back to the

heart through the _______________ .

3

The blood helps us because it:

a) carries _______________ and _______________ through our body cells.

b) carries _______________ and _______________ away from our body cells.

4Our body needs oxygen because it uses it to combine with our food to

make

veins heart capillaries arteries

body right oxygen left lungs

waste oxygen dissolved food carbon monoxide carbon dioxide

.




8Name: _____________________________

5

What is:a) your heartbeat

7

Draw a graph of a boy who gets upin the morning. He spends 10 minuteslying in bed. Over the next ten minutesgets washed and dressed. He is veryforgetful and spends the next tenminutes running up and down thestairs to find his uniform, school booksand then he sits down to eat hisbreakfast for ten minutes.

b) your pulse

6

Say what happens to your pulse and why when you do the following:

a) exercise

b) sleep

8

In answering the above question, a set of pupils in a class drew the followinggraphs. Turn over and criticise what they have done on each graph.

0 10 20 30 40

200

100

0 10 20 30 40

200

100Graph BGraph A




9Name: _____________________________

9

Mark the approximate positionof the brain in the body outline.Label this position B. Label theother main organs.

10

Our skeleton does three main thingsfor our bodies. List them.

11

Our bones cannot bend, they move at places where bones meet. We call

these parts _______________ . Muscles are needed to get bones to move.

Muscles can only _______________ , they cannot _______________ . This

means that in order to move any part of the body back, muscles must

exist in _______________ . One muscle pulls the bone one way, the opposite

muscle returns it.

pairs joints pull hinges push singles

heart lungs intestine stomach



CAN YOU REMEMBER... ABOUT MATERIALS?

10Name: _____________________________

1

Write an accurate description of each of the following words:

2

How would you separate the sand and salt from a sample of sea water?

3

Sand does not dissolve, we say it is

Salt and sugar do dissolve, they are

4

Mark makes a cup of tea. He adds a spoonful of sugar to make sugary tea.

The sugar is an example of a ___________________ , the tea is the

___________________ and the sugary tea is called a ___________________ .

As a practical joke Mark keeps adding spoon after spoon of sugar. Eventually,

there comes a stage when he can’t get any more sugar to dissolve. Mark

has probably created a ___________________ solution.

Can you think of any other reasons why the sugar may no longer dissolve?

hard

soft

strong

flexible

soluble saturated solute solution solvent insoluble




11Name: _____________________________

5

Is dissolving a reversible or irreversible change? Explain.

6

__________________ tend to allow electricity and heat to pass through

them. Such substances are called ___________________ . Plastics are good

___________________ , they do not allow heat or electricity to _______________

through them easily.

7

How would you separate:

sugar from sugary water?

mud from pond water?

8

Circle the changes that are reversible.Underline those that cannot be reversed.

dissolving freezing

setting clay cooking a cake

condensing burning gas

burning wood melting

burning wax evaporating

conductors warm flow metals insulators run




12Name: _____________________________

9

Name the only two common materials that are magnetic.

10

Write true or false to the following statements. Most metals are what?

conductors ___________________

shiny ___________________

bendy ___________________

magnetic ___________________

hard ___________________

11

How would you separate different sizes of gravel from the side of the schoolpond, or different sized grains of soil?

12

A boy takes half an egg cup full of water and finds that it takes fourteaspoons of sugar to make a saturated solution. He then assumes that itwill also take four teaspoons of salt or four of chalk. Is he correct?

13

Would you use chalk rocks to build a shopping centre? Explain your answerand suggest a more suitable type of rock.

metalironcoppersteel



CAN YOU REMEMBER... ABOUT SOLIDS, LIQUIDS & GASES?

13Name: _____________________________

1

Substances can exist as solids, liquids or gases. Complete this table toshow the properties of each state. Write ‘Yes’ or ‘No’ in the appropriatepart of the table.

2

Write the names of the following changes of state:

solid to liquid

liquid to gas

liquid to solid

gas to liquid

3

Describe what process has taken place if:

a cold milk bottle gets water droplets on the outside.

bathroom tiles get covered in water droplets.

clothes dry on a windy day.

a molten piece of solder cools on a heatproof mat.

a cup of tea cools down.

solid

liquid

gas

KEEPS ITS SHAPE CAN POUR IS COMPRESSIBLE

condensation solidification cooling evaporation

condensation melting freezing evaporation



CAN YOU REMEMBER... ABOUT SOLIDS, LIQUIDS & GASES?

14Name: _____________________________

4

When you heat things they may burn, change state or split apart. Saywhich of these changes listed below are permanent (irreversible) and whichare temporary (reversible).

5

The water from the sea is ____________________ due to heat from the

____________________ . This ____________________ then rises into the air

where it cools and ____________________ to form ____________________ .

A cloud is made of tiny droplets of water, so clouds are not water vapour,

they are ____________________ . When droplets join together and become

too heavy, they fall to the ground as ____________________ .

6

Simon put 100ml of water into a jug. Ann put 100ml of water into a widebowl. Frances put 100ml of water into a plastic bottle and put the lid on.They put them all on the windowsill in the classroom for 24 hours. Thistable shows the amount of water left.

Explain the results.

What happened to the water that disappeared from the containers?

CONTAINER WATER LEFT

bottle with lid

tall jug

wide bowl

100ml

60ml

25ml

burning dissolving

decomposing boiling

freezing condensing

sun evaporated clouds vapour condenses water rain liquid

SEA

Label thediagram.

The WATERCYCLEshows usseveralchanges ofstate.



CAN YOU REMEMBER... ABOUT FORCES?

15Name: _____________________________

1

There are two forces that can slow objects down. Name them.

2

A rocket flies in the directionshown. Label the WEIGHT of therocket with an arrow A. Labelthe AIR RESISTANCE with anarrow R.

4

Paul returns a tennis ball to his opponent. Describethree effects of the force from the racket on the ball.

5

Do objects weigh more, less or the same in water? Explain your answer.

3

A girl throws a ball, as shown.Show the force of gravity onthe ball and the air resistance.

upthrust friction weight air resistance



CAN YOU REMEMBER... ABOUT FORCES?

16Name: _____________________________

6

The forces on an object are balanced if the object is __________________ .The forces on an object are unbalanced if the object is

7

A man pushes a supermarkettrolley along the floor. Showwhere friction may occur bylabelling the diagram.

9

A boat is floating in the pond.Are the upward and downward forces balanced or unbalanced?

___________________________

10

In this situation, a girl is stretchinga spring. Show her pull witharrows in BLUE. Show the forceexerted by the spring in RED.

8

Using the rules you have writtenin your answer to question 6above, state whether the forcesare balanced (B) or unbalanced(U) in each of these situations:

• boy stands still on a chair • a decoration hangs on a tree• ball falls from a shelf• tug of war where no one moves• skateboarding down hill• a ball hits a wall• a moving car hits the brakes

or

( )( )( )( )( )( )( )

speeding up smaller slowing down still bigger

resistance weight upthrust

.

Complete the following passage.

The downward force of the boat on the water is called the _________________

and the upward push of the water that keeps the boat afloat is called the

_________________ .



CAN YOU REMEMBER... ABOUT SOUND?

17Name: _____________________________

1 Sounds occur when an object or substance does what?

3

You make sounds louder by ___________________ them __________________

this makes the vibrations more frequent or bigger. Which? _______________

High pitch notes are caused by objects that are ______________________ ,

__________________ or __________________ . These high pitch objects make

vibrations that are more frequent or bigger. Which? _____________________

4

Here are some instruments. For each one write underneath the picture whatis actually vibrating. Next colour the one that is lower in pitch.

2The sound is heard by our ears because

hitting smaller bigger harder tighter shorter frequent



CAN YOU REMEMBER... ABOUT LIGHT?

18Name: _____________________________

1We see things because

4At what angle does light reflect off a mirror?

5Explain, in one word, how a scientist describes an object which:

a) lets no light through

b) lets all light through

c) lets some light through

2

Show how the girl sees the plant.Draw in the light rays and fullylabel the path of the mostimportant light ray.

3

Two children prepare anexperiment. They place two brickson a table. Show using clear lines,how the shadow on the wall isproduced when the light is on.

6List three sources of light:

Two objects that reflect light well are:

transparent

opaque

translucent



CAN YOU REMEMBER... ABOUT MAGNETS?

19Name: _____________________________

1

A magnet does not just attract magnets, but will attract any material

that is ____________________ . Two such materials are ___________________

and ____________________ . ____________________ is not magnetic.

3

A good way to test if a shiny material is a metal is to see if it is magnetic.Do you agree with this view? Explain your answer.

2

The ends of a magnet are called poles. Complete the table to show whathappens when different poles of a magnet are placed close together.

4

Bigger magnets can hold more objects, e.g. paper clips, staples.Is this statement true or false?

Stronger magnets can hold more objects, e.g. paper clips, staples.Is this statement true or false? Explain your answer.

PLACED CLOSE TONORTH POLE

PLACED CLOSE TOSOUTH POLE

NORTHPOLE

SOUTHPOLE

metal iron magnetic copper steel



CAN YOU REMEMBER... ABOUT HEATING & COOLING?

20Name: _____________________________

1

The amount of heat held in an object, we measure as the

____________________ of the object. We measure it in _____

using an instrument we call a ____________________ .

2

What are common mistakes when using a thermometer?List three.

3

A girl measures the temperature of a cup of tea as it cools in a room thatis 20°C. Sketch and label the graph to show how it cools from 90°C.

The cup is polystyrene. The girl puts a snap-on lid onto the cup and putsthe cup inside an identical polystyrene cup. In a different colour, sketchthe graph of how a cup of tea cooling from 90°C will now cool.

Drawing graphs is animportant skill, so isextending them. Predictwhat happens in eachof the following byextending the line.

100

80

60

40

20

0

°Cnewtonstemperaturethermometer

conductors insulators filters

Polystyrene, bubble wrap, cotton wool and foam trap air and so are good

____________________________ .



CAN YOU REMEMBER... ABOUT ELECTRICITY?

21Name: _____________________________

1

Say whether each of the circuits shown below will light the bulbs or not.

2

Explain why these two circuits will not work.

3

You can dim a bulb either by using a variable resistor which is made forthis purpose or by using a length of material, like resistance wire or a pencillead. These are conductors but they don’t allow the electricity to flow aswell. Are the following statements true or false?

THE LONGER THE LENGTH OF WIRE, THE DIMMER THE BULB. ____________

THE THINNER THE LENGTH OF WIRE, THE DIMMER THE BULB. ____________

4

Draw a circuit diagram for each of these arrangements.

-+

-

+

-

+

-

+

-

+

-

+

-

+

- +- +



CAN YOU REMEMBER... ABOUT ELECTRICITY?

22Name: _____________________________

5

One cell lighting one bulb is NORMAL brightness. Say if the bulbs in thefollowing diagrams are normal, brighter or dimmer than the normalbrightness.

6

Bulbs can either be connected in series (LIKE CIRCUIT S) or in parallel(LIKE CIRCUIT P).

Draw on the circuit diagram P the following:

1. Mark a point X on circuit P where you could put a switch that turns offboth bulbs when it is opened.

2. Mark a point Y on circuit P where you would only turn off bulb a.

3. Mark a point Z on circuit P which would only turn off bulb b.

Now answer these questions about the two circuits.

1. If one bulb blows in CIRCUIT S will the other stay alight?Explain why/why not.

2. If one bulb breaks in CIRCUIT P, will the other stay alight?

3. Which set-up is best for Christmas tree lights?

S Pa

b



CAN YOU REMEMBER... ABOUT EARTH IN SPACE?

23Name: _____________________________

1

Complete these sentences.

The Earth spins on its ____________________ every ____________________ .

The Moon ____________________ the Earth every ____________________ .

The Earth orbits the ____________________ every ____________________ .

2

What shape are the Earth, Sun and Moon?

3

sun axis 28 days day orbits 14 days 365 days

The sun’s position is shownat noon on a summer’s day.

Draw the sun at 8am on the same summer’s day. Label it A.Draw the sun at 2pm on the same summer’s day. Label it B.Draw in the sun at noon on a winter’s day. Label it C.

4

Circle the correct answers.1. On a sunny summer’s day, when would the longest shadow be seen?BEFORE DAWN / AT 9AM / AT NOON / AT 5PM

2.When would the shortest shadow be seen?BEFORE DAWN / BEFORE MIDDAY / AT NOON / AFTER MIDDAY

Explain why the shortest shadow is seen at this time.

Science Ks3

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