Primary 3 Science · Textbook challenge

Textbook Challenge: All Seven Chapters

Name:Date:Marks: / 30

Section A · Multiple choice 16 marks

1. Frosted glass is used for a bathroom window. Which word describes frosted glass?1 mark

(A) Transparent(B) Translucent(C) Opaque(D) Flexible

2. Glass is made by heating which natural material until it melts?1 mark

(A) Sand(B) Clay(C) Wood(D) The sap of a tree

3. Which material is made by shaping clay and then baking it until hard?1 mark

(A) Glass(B) Rubber(C) Fabric(D) Ceramic

4. Plastic is usually made in factories using which of these?1 mark

(A) Sand(B) Clay(C) Oil from the ground(D) Cotton plants

5. A ship is made of metal, which sinks. Why can the ship still float?1 mark

(A) Metal is lighter than water(B) There is a lot of trapped air inside it(C) Ships are very flexible(D) Metal is transparent

6. Which group of animals can keep a constant body temperature?1 mark

(A) Mammals(B) Reptiles(C) Fish(D) Amphibians

7. A starfish is not a fish. Which fact helps explain this?1 mark

(A) It lives in water(B) It has fins(C) It has feathers(D) It has no scales or gills

8. Mould, mushrooms and yeast are grouped together as which kind of living thing?1 mark

(A) Bacteria(B) Plants(C) Fungi(D) Animals

9. Which of these is a way that useful bacteria help us?1 mark

(A) They make bread dough rise(B) They help to break down food in our bodies(C) They turn soybeans into tempeh(D) They grow into mushrooms

10. The leaves of a mimosa plant fold when they are touched. Which thing that living things can do does this show?1 mark

(A) Respond to changes(B) Reproduce(C) Grow bigger(D) Need water

11. How many stages are there in the life cycle of a plant such as a soybean?1 mark

(A) Two(B) Four(C) Five(D) Three

12. A mosquito has an egg, a larva, a pupa and an adult. A frog has an egg, a tadpole and an adult. Which stage does the frog not have?1 mark

(A) Egg(B) Adult(C) Pupa(D) Tadpole

13. Which action helps most to stop mosquitoes from breeding at home?1 mark

(A) Leave water in plant pot plates(B) Pour away stagnant water(C) Keep water in open pails(D) Close the windows at night

14. Which pair is made only of objects that a magnet attracts?1 mark

(A) An iron nail and a steel pin(B) A plastic ruler and a rubber band(C) A copper coin and a wooden stick(D) A glass marble and an aluminium can

15. Which test is the best way to show that an object is a magnet?1 mark

(A) It attracts a steel clip(B) It is made of metal(C) It feels heavy(D) It repels another magnet

16. Which change makes an electromagnet stronger?1 mark

(A) Using fewer batteries(B) Using a plastic nail instead of an iron nail(C) Winding more turns of wire around the iron nail(D) Taking the battery away

Section B · Show what you know 14 marks

17. A glass bottle is not the best container for a young child to carry. Give a reason.2 marks

18. Car tyres are made of rubber. Give two properties of rubber that make it suitable for tyres.2 marks

19. Name the three things that all living things need.2 marks

20. Write one similarity and one difference between the life cycles of a frog and a mosquito.2 marks

21. Ali winds 10 turns of wire and uses 1 battery for one electromagnet. He winds 20 turns and uses 2 batteries for another. He says the second is stronger because it has more turns of wire. Why is his test not fair?2 marks

22. Day and night happen again and again. Why do we call this a cycle, and what causes it?2 marks

23. A scientist finds a living thing growing on old bread. It does not make its own food and it reproduces by spores. Which group does it belong to? Give a reason.2 marks

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