Science 7 · Unit 5: Properties of materials · Cambridge Lower Secondary Science Stage 7

Questions

1. 1. Metals are strong and tough. What is iron used for because of this?

   • electrical wiring
   • making mirrors
   • building bridges
   • making jewellery
   Check

2. 2. Metals are usually shiny. What is gold used for because of this?

   • making hammers
   • electrical wiring
   • jewellery, such as a necklace
   • building bridges
   Check

3. 3. Metals are good conductors of electricity. What is copper used for because of this?

   • jewellery
   • bridges
   • hammer heads
   • electrical wiring
   Check

4. 4. A hammer head is made of steel. Which property of metals makes it suitable?

   • strong and tough
   • shiny
   • ductile
   • sonorous
   Check

5. 5. Which of these is a property of metals?

   • malleable
   • brittle
   • has a dull surface
   • does not conduct electricity
   Check

6. 6. Which of these is NOT a property of metals?

   • has a shiny surface
   • brittle
   • ductile
   • conducts heat
   Check

7. 7. Which of these is a property of metals?

   • does not conduct electricity
   • has a dull surface
   • makes a ringing sound when tapped
   • brittle
   Check

8. 8. Why does a metal object feel cold to the touch?

   • It conducts heat away from your hand quickly.
   • It is always colder than other objects.
   • It has no particles.
   • It gives out cold energy.
   Check

9. 9. What word means "rings like a bell when hit"?

   • sonorous
   • ductile
   • malleable
   • magnetic
   Check

10. 10. What word means "can be pulled out into wires"?

    • ductile
    • malleable
    • sonorous
    • brittle
    Check

11. 11. What word means "can be changed into different shapes"?

    • sonorous
    • ductile
    • brittle
    • malleable
    Check

12. 12. What word is the opposite of dull?

    • strong
    • magnetic
    • tough
    • shiny
    Check

13. 13. What word means "is attracted to a magnet"?

    • sonorous
    • ductile
    • conductor
    • magnetic
    Check

14. 14. What is a material that allows heat and electricity to pass through it?

    • an alloy
    • a magnet
    • a conductor
    • an insulator
    Check

15. 15. All the features of a metal are its ...

    • elements
    • reactions
    • properties
    • alloys
    Check

16. 16. Why are saucepans usually made of metal?

    • Metals are dull.
    • Metals conduct heat well, so the food heats up.
    • Metals are sonorous.
    • Metals are magnetic.
    Check