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Attnom Academy assessment paper, Level 2

Science, about class 3

  • Time: 45 minutes
  • 30 marks
  • 18 questions

This paper tests only the chapters below. Read them first. Each question names its chapter in the mark scheme, so a lost mark tells you what to read again.

Name: ______________________________ Date: ______________

Section A. Quick recall (12 marks)

Tick one answer for each question. Each question is worth 1 mark.

Question 11 mark

A beetle eats every leaf of a small bean plant. Which job can the plant no longer do?

  1. ATake in water from the soil
  2. BMake food using light
  3. CHold itself up
  4. DMake seeds

Question 21 mark

Tariq puts a bean seed in wet cotton wool. There is no soil. The seed starts to grow. What feeds the tiny plant at first?

  1. AThe soil round it
  2. BThe light from the window
  3. CIts first green leaves
  4. DThe food store in the seed

Question 31 mark

Wool is cut from sheep. Which of these is once living?

  1. AA woollen jumper
  2. BA goat in a field
  3. CA glass bottle
  4. DA river

Question 41 mark

A seal swims in the sea and eats fish. Which fact shows that a seal is a mammal?

  1. AIt swims in the sea.
  2. BIt eats fish.
  3. CIt feeds its young on milk.
  4. DIt has a smooth body for swimming.

Question 51 mark

A cycle helmet guards the head. Which bones guard the brain all the time?

  1. AThe ribs
  2. BThe backbone
  3. CThe skull
  4. DThe thigh bone

Question 61 mark

Sipho kicks a ball and swings his whole leg out wide. Which joint lets the leg swing this way?

  1. AThe hip, a ball and socket joint
  2. BThe knee, a hinge joint
  3. CThe elbow, a hinge joint
  4. DThe joints of the skull

Question 71 mark

Mei pours honey from a jar into a bowl. It flows slowly and takes the shape of the bowl. What is honey?

  1. AA solid, because it is thick.
  2. BA gas, because it spreads out.
  3. CA liquid, because it keeps its own shape.
  4. DA liquid, because it takes the shape of the bowl.

Question 81 mark

Kofi holds a flat card up high outside. The card is pushed back against his hand. Nothing he can see touches it. What is pushing the card?

  1. ALight from the Sun
  2. BMoving air, called wind
  3. CNothing, because air is too light to push.
  4. DThe space round the card, which is empty.

Question 91 mark

A box lies still on the floor. Two children push it from opposite sides. Both pushes are the same size. What happens?

  1. AIt stays still, because the pushes are balanced.
  2. BIt slides to one side.
  3. CIt speeds up, because there are two pushes.
  4. DIt stays still, because no force acts on it.

Question 101 mark

At night, car lamps light up a cat by the road. The cat's eyes shine brightly. Which sentence is true?

  1. AThe lamps make light. The cat's eyes only send it back.
  2. BThe lamps and the cat's eyes both make their own light.
  3. CThe cat's eyes make light, because they look bright.
  4. DThe lamps only send back light from the cat's eyes.

Question 111 mark

Amina holds a magnet near four things. Which one does the magnet not pull?

  1. AAn iron nail
  2. BAn iron bolt
  3. CA steel paper clip
  4. DA drink can made of aluminium

Question 121 mark

On a clear night, Ravi sees many stars. Which sentence about the stars is true?

  1. AEach is a small ball of rock, like the Moon.
  2. BEach is a huge ball of hot, glowing gas, like the Sun.
  3. CEach is smaller than the Moon, because it looks smaller.
  4. DEach sends back light from the Sun, like the Moon.

Section B. Worked problems (12 marks)

Show your working. Write the answer with its unit. The marks for each question are shown beside it.

Question 133 marks

Tariq hangs stones in a cup on a rubber band. With the empty cup, the band is 5 cm long. With 4 stones, it is 13 cm long. Each stone stretches the band the same amount. How much does one stone stretch it?

Question 143 marks

Sound goes about 1 km in 3 seconds. Kofi watches fireworks over a far hill. He sees a rocket burst. He hears the bang 6 seconds later. How far away is the burst, in km?

Question 152 marks

Ravi has a bar magnet with its N end marked. He finds a grey metal bar. He holds the N end near one end of the bar. The bar is pushed away. Is the grey bar a magnet? Explain.

Question 162 marks

Amina taps a metal bell with a spoon. She hears a clear sound but sees nothing move. Does the bell move? How can she find out?

Question 172 marks

Mei shines a torch at a wall in a dark room. She holds a ball in the light. Its shadow shows on the wall. She lifts the ball a little higher. Which way does the shadow move? Explain why.

Section C. A longer question (6 marks)

Each part uses what you found before. Show your working.

Question 186 marks

Hana makes a model of day and night. A torch stands for the Sun. A ball stands for the Earth. A pin on the ball marks her home. She turns the ball once every 20 seconds. She turns it 3 times.

(a)How long do all the turns take, in seconds? [2 marks]

(b)At the start, the pin faces the torch. She turns the ball for the time in part (a). Then she stops. Is it day or night at her home now? Say how you know. [2 marks]

(c)Hana's brother says night comes because the Sun goes out. Their cousin lives on the other side of the Earth. It is the middle of the night at Hana's home. Is it day or night for the cousin? Use this to show why he is wrong. [2 marks]

For the marker. Science, about class 3

Mark scheme

One line is one mark. A right final answer with no working gets every mark for that part. Lost marks? Read the chapter named under the part.

Question 11 mark

Answer: B. Make food using light

  1. The leaf makes food for the plant, using light.

Tests S2.1.1 Plant parts and their jobs

Question 21 mark

Answer: D. The food store in the seed

  1. The food store feeds the tiny plant until its leaves can make food.

Tests S2.1.2 From seed to seedling

Question 31 mark

Answer: A. A woollen jumper

  1. Wool came from a sheep, so the jumper is once living.

Tests S2.2.1 Living and non-living

Question 41 mark

Answer: C. It feeds its young on milk.

  1. Only mammals feed their young on milk. Swimming, food and shape do not tell the group.

Tests S2.2.2 Grouping animals

Question 51 mark

Answer: C. The skull

  1. The skull is the hard bones of the head. It protects the brain.

Tests S2.3.1 The skeleton

Question 61 mark

Answer: A. The hip, a ball and socket joint

  1. A ball and socket joint turns in many directions. The hip is one.

Tests S2.3.2 Joints

Question 71 mark

Answer: D. A liquid, because it takes the shape of the bowl.

  1. A liquid takes the shape of its container. The amount stays the same.

Tests S2.4.1 Solids, liquids and gases

Question 81 mark

Answer: B. Moving air, called wind

  1. Wind is air that moves. Moving air can push things.

Tests S2.4.2 Air is all around us

Question 91 mark

Answer: A. It stays still, because the pushes are balanced.

  1. Two forces of the same size that act in opposite ways are balanced. Nothing changes.

Tests S2.5.1 Forces are pushes and pulls

Question 101 mark

Answer: A. The lamps make light. The cat's eyes only send it back.

  1. The lamps are a light source. The cat's eyes are not. They send the light back.

Tests S2.6.1 Where light comes from

Question 111 mark

Answer: D. A drink can made of aluminium

  1. A magnet pulls iron and steel. It does not pull aluminium, though it is a metal.

Tests S2.8.1 What magnets pull

Question 121 mark

Answer: B. Each is a huge ball of hot, glowing gas, like the Sun.

  1. The stars are like our Sun: huge balls of hot, glowing gas, very far away.

Tests S2.9.1 Sun, Earth and Moon

Question 133 marks

Answer: 2 cm

  1. The stones make the band longer by 13 − 5 = 8 cm.
  2. The 4 stones share this stretch equally: 8 ÷ 4 = 2.
  3. One stone stretches the band 2 cm.

Tests S2.5.2 Measuring forces

Question 143 marks

Answer: 2 km

  1. In every 3 seconds, the sound goes 1 km.
  2. The number of 3 second steps is 6 ÷ 3 = 2.
  3. The burst is 2 × 1 = 2 km away.

Tests S2.7.2 Sound travels

Question 152 marks

Answer: Yes. Only a magnet can push a magnet. A bar that is not a magnet would be pulled. Like poles push apart, so that end of the grey bar is an N pole.

  1. Says Yes, because only a magnet can push a magnet. An iron bar that is not a magnet would be pulled.
  2. Says that end of the grey bar is N, because like poles push apart.

Tests S2.8.2 North and south poles

Question 162 marks

Answer: Yes. The bell vibrates, moving back and forth very fast. The movement is too fast and small to see. She can touch it lightly and feel it buzz.

  1. Says Yes, the bell vibrates. It moves back and forth too fast and small to see.
  2. Says she can find out by touching it lightly and feeling it buzz, by holding it and hearing the sound stop, or by any fair test that shows the movement.

Tests S2.7.1 Sounds come from vibrations

Question 172 marks

Answer: The shadow moves up. Light goes in straight lines. The ball now blocks the rays that went to a higher part of the wall, so the dark place is higher.

  1. Says the shadow moves up too.
  2. Says light goes in straight lines, so the ball now blocks rays to a higher part of the wall.

Tests S2.6.2 Light goes in straight lines

Question 186 marks

(a)Answer: 60 s

  1. Each turn takes 20 seconds, and there are 3 turns.
  2. 20 × 3 = 60 s.

Tests S2.9.2 Why we have day and night

(b)Answer: It is day. The ball made whole turns, so the pin is back where it began, facing the torch.

  1. Says it is day.
  2. Says the ball made whole turns, so the pin is back where it began, facing the torch.

Tests S2.9.2 Why we have day and night

(c)Answer: It is day for the cousin. The Sun lights the half of the Earth that faces it, and the cousin is on that half. So the Sun has not gone out. It is still shining on the other side of the Earth.

  1. Says it is day for the cousin, whose half of the Earth faces the Sun.
  2. Says this shows the Sun has not gone out. It keeps shining on the half of the Earth that faces it.

Tests S2.9.2 Why we have day and night

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