Science 2 · Unit 3: Getting materials right · Cambridge Primary Science Stage 2

Questions

1. 1. How can you find out if a fabric is waterproof?

   • look at its colour
   • fold it
   • smell it
   • put a drop of water on it and watch
   Check

2. 2. You drip water on a fabric and it stays on top. What does this show?

   • The fabric is transparent.
   • The fabric is weak.
   • The fabric is absorbent.
   • The fabric is waterproof.
   Check

3. 3. An umbrella needs to be ...

   • absorbent
   • waterproof
   • transparent
   • soft
   Check

4. 4. Zara puts a rock on each cushion. The rock goes down 6 bricks on cushion A and 2 bricks on cushion B. Which is softer?

   • cushion A
   • cushion B
   Check

5. 5. Look at Ben's block graph. Which ruler was the most flexible?

   • the thick plastic ruler
   • the wooden ruler
   • the thin plastic ruler
   • the metal ruler
   Check

6. 6. Look at Ben's block graph. Which ruler was the most rigid?

   • the metal ruler
   • the wooden ruler
   • the thick plastic ruler
   • the thin plastic ruler
   Check

7. 7. Ben says the metal ruler is the least flexible. Look at his block graph. Is he right?

   • Yes
   • No
   Check

8. 8. Look at Ben's block graph. How many more bricks did the thin plastic ruler bend than the wooden ruler?

   • 7
   • 2
   • 9
   • 5
   Check

9. 9. The thin plastic ruler bent 7 bricks and the thick one bent 5. Why are they different?

   • One is made of metal.
   • The thin one is heavier.
   • The thick ruler is thicker, so it is harder to bend.
   • They are different colours.
   Check

10. 10. What kind of graph shows results with blocks?

    • a block graph
    • a picture
    • a Venn diagram
    • a map
    Check

11. 11. What can we use to measure how far something bends or stretches?

    • bricks or counters
    • a song
    • a smell
    • our ears
    Check

12. 12. Why should you not stretch rubber bands too much?

    • They change colour.
    • They will turn into water.
    • They could break and hurt people.
    • They get heavier.
    Check

13. 13. Your results are different from your friend's. What should you do?

    • copy your friend
    • test again to check
    • throw them away
    • give up
    Check

14. 14. Which would be a silly material for a ruler?

    • wood
    • metal
    • plastic
    • jelly
    Check