Attnom Academy assessment paper, Level 2

Science, about class 4

  • Time: 45 minutes
  • 30 marks
  • 20 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.

Sit it here and mark it on this device, or print it on A4 with its mark scheme. The class is a guide: the books are written in levels.

Section A. Quick recall (14 marks)

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

Question 11 mark

Joseph sees a bird with webbed feet on a pond. What do the webbed feet help it do?

Question 21 mark

Tariq reaches out to shake a hand. His arm goes from bent to straight. Which muscle pulls it straight?

Question 31 mark

The dentist finds holes in Ravi's back teeth. What made the holes?

Question 41 mark

Amina eats maize porridge, a boiled egg and a mango. Which one is rich in protein, to help her grow and mend?

Question 51 mark

A puddle turns to ice in the night. In the morning sun, the ice turns back to water. Which two changes are these?

Question 61 mark

A bowl of water stands in a cool room for three days. Its level goes down. Where did the water go?

Question 71 mark

A farmer drags a heavy sack along the ground. Then she puts it on a cart with wheels. Why is it easier now?

Question 81 mark

Sipho sees a green door in a room with one lamp. Which sentence is true?

Question 91 mark

Mei wants shadow puppets on a wall. Which sheet makes the darkest shadow?

Question 101 mark

Hana hits a drum hard. The sound is loud. What does the drum skin do?

Question 111 mark

Ana holds a magnet over a clip on a table. The clip jumps up when the magnet is 2 cm away. At 6 cm, it does not move. Why?

Question 121 mark

Ravi sees that the cover on a lamp's wire has split. He can see the metal inside. The lamp is plugged in. What should he do?

Question 131 mark

In the morning, Diego sees the Sun low in the east. Where will he see it late in the day, and why?

Question 141 mark

It is summer where Hana lives. At the same time, it is winter for her cousin, far away. How can this be?

Section B. Worked problems (10 marks)

Show your working. The marks for each question are shown beside it.

Question 152 marks

A grown up uses a stick. She lifts the far side of a board. Sipho looks but does not touch the animals. He tallies 9 ants, 5 snails and 6 worms under it. Then 4 ants run away. How many animals are under the board now?

Question 162 marks

Sound goes 340 metres each second. Ravi shouts in front of a cliff. He hears the echo 3 seconds later. How far away is the cliff, in metres?

Question 172 marks

Mei throws a ball straight up. It slows, stops, and then comes back down. Why does it come back down?

Question 182 marks

A book slides a long way across a smooth table. On a rough mat, it stops fast. Use friction to say why.

Question 192 marks

Mei makes a compass. A grown up helps her. The needle floats on a leaf in a bowl. Her brother puts a bar magnet by the bowl. The needle turns toward the magnet. Why? How can Mei fix it?

Section C. A longer question (6 marks)

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

Question 206 marks

Kofi tests light on bean seedlings. He puts three beans in a cup, in a sunny window. He puts three beans in a cup, in a dark cupboard. Both cups get the same soil and the same water. On day 4, the tallest sunny seedling is 5 cm tall. On day 10, it is 12 cm tall.

(a)How many cm does that seedling grow from day 4 to 10? [2 marks]

(b)Kofi puts a third cup of seedlings in the same sunny window. His sister waters it so much that the soil is always soaked. After a week, its leaves go yellow. Why? [2 marks]

(c)Why can the seedlings in the dark cupboard not make food? [2 marks]

0 of 22 answered. Your answers stay on this device.

The whole mark scheme, for a teacher or for after you mark

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. Push water back as it swims

  1. Webbed feet have skin between the toes. They push water back when the bird swims.

Tests S2.2.5 Fit for the habitat

Question 21 mark

Answer: C. The triceps, at the back

  1. The triceps is at the back of the upper arm. It pulls the arm straight.

Tests S2.3.3 Muscles move bones

Question 31 mark

Answer: D. Acid made by germs that feed on sugar

  1. Germs on the teeth make acid from sugar. The acid makes holes.

Tests S2.3.4 Teeth

Question 41 mark

Answer: B. The boiled egg

  1. An egg is rich in protein. Protein helps the body grow and mend.

Tests S2.3.5 Food groups

Question 51 mark

Answer: A. Freezing, then melting

  1. The cold makes the water freeze. The sun heats the ice, and it melts.

Tests S2.4.3 Melting and freezing

Question 61 mark

Answer: D. Into the air, as water vapour

  1. Water evaporates even when it is cool. It goes into the air as water vapour.

Tests S2.4.4 Evaporation and drying

Question 71 mark

Answer: B. Wheels give less friction than sliding

  1. A wheel rolls, so there is less friction than when the sack slides on the ground.

Tests S2.5.4 More friction or less

Question 81 mark

Answer: C. Light from the lamp bounces off the door into his eyes

  1. The lamp lights the door. The light bounces off the door and goes into his eyes.

Tests S2.6.3 How we see

Question 91 mark

Answer: A. A thick sheet of card

  1. Thick card is opaque. It lets no light through, so the shadow is dark.

Tests S2.6.4 Opaque, translucent, transparent

Question 101 mark

Answer: D. It moves further than for a soft hit

  1. A bigger vibration makes a louder sound. The skin moves further than for a soft hit.

Tests S2.7.5 Loud and quiet

Question 111 mark

Answer: C. The pull gets weaker as the gap gets wider

  1. The gap is wider at 6 cm, so the pull is too weak to move the clip.

Tests S2.8.3 Magnetic force through things

Question 121 mark

Answer: A. Keep away, and tell a grown up at once

  1. The mains can kill. He does not touch the lamp, its wire or its plug, and tells a grown up.

Tests S2.8.5 Electricity: safe and unsafe

Question 131 mark

Answer: C. Low in the west, because the Earth turns

  1. The Earth turns, so the Sun seems to move from east to west. Late in the day it is low in the west.

Tests S2.9.3 The Sun seems to move

Question 141 mark

Answer: B. The Earth leans, so one half gets more sunshine

  1. The Earth leans. The half that leans toward the Sun is warmer, and the other half is colder.

Tests S2.9.4 A year: going round the Sun

Question 152 marks

Answer: 16

  1. Add what he first sees: 9 + 5 + 6 = 20.
  2. Take away the ants that ran: 20 − 4 = 16.

Tests S2.2.4 Exploring a small habitat

Question 162 marks

Answer: 510 m

  1. In 3 seconds, the sound goes 340 × 3 = 1020 m.
  2. The sound goes there and back, so the cliff is half of that: 1020 ÷ 2 = 510 m.

Tests S2.7.3 Echoes

Question 172 marks

Answer: Gravity, the pull of the Earth, acts on the ball. It pulls the ball down, toward the centre of the Earth, so the ball falls back.

  1. Says gravity, the pull of the Earth, acts on the ball.
  2. Says the pull is down, toward the centre of the Earth, so the ball falls back.

Tests S2.5.5 Gravity and falling

Question 182 marks

Answer: The smooth table gives little friction, so the book slides far. The rough mat gives more friction, so the book stops fast.

  1. Says the smooth table gives little friction, so the book slides far.
  2. Says the rough mat gives more friction, so the book stops fast.

Tests S2.5.3 Friction

Question 192 marks

Answer: A magnet that is near pulls the needle much harder than the Earth does. Mei takes the magnet away, and the needle turns back to point north and south.

  1. Says the magnet is near, so it pulls the needle much harder than the Earth does.
  2. Says she moves the magnet far away, so the needle turns back to north and south.

Tests S2.8.4 Making a compass

Question 206 marks

(a)Answer: 7 cm

  1. Take the height on day 4 from the height on day 10.
  2. 12 − 5 = 7 cm.

Tests S2.1.3 A fair test with plants

(b)Answer: The soil has too much water. The roots cannot get air, so they rot. Then the leaves go yellow.

  1. Says the soaked soil leaves the roots with no air.
  2. Says the roots rot.

Tests S2.1.4 Light, water and plant health

(c)Answer: A green leaf needs sunlight, water and a gas from the air to make food. There is no sunlight in the cupboard.

  1. Says a green leaf uses sunlight, water and a gas from the air to make food.
  2. Says the cupboard has no sunlight, so the leaves cannot make food.

Tests S2.1.5 Leaves make food