Science 2 · Unit 6: Electricity · Cambridge Primary Science Stage 2

Questions

1. 1. What do we call things that use electricity?

   • light sources
   • materials
   • electrical appliances
   • habitats
   Check

2. 2. Where is mains electricity made?

   • in the Moon
   • in a flashlight
   • in a cell
   • in a power station
   Check

3. 3. Why are electricity wires high in the air?

   • so they look nice
   • so they get sunlight
   • so birds can use them
   • so that we are safe
   Check

4. 4. What is a cell?

   • a switch
   • a source of electricity
   • a light bulb
   • a wire
   Check

5. 5. Why does a flashlight use cells?

   • so you can carry it around
   • so it is heavier
   • so it makes sound
   • so it can be plugged in
   Check

6. 6. Which appliance uses mains electricity?

   • a toy car
   • a flashlight
   • a watch
   • a hair dryer
   Check

7. 7. Which appliance uses cells?

   • a washing machine
   • a fridge
   • a watch
   • an oven
   Check

8. 8. Which one does not use electricity?

   • a radio
   • a television
   • a plant
   • a laptop
   Check

9. 9. Which is a type of switch?

   • a float switch
   • a slide switch
   • a bend switch
   • a melt switch
   Check

10. 10. What did Michael Faraday discover over 200 years ago?

    • that sound travels
    • that plants need light
    • that the Earth is round
    • that electricity could move things
    Check

11. 11. Who invented the electric light bulb?

    • Galileo
    • Michael Faraday
    • Thomas Edison
    • Isaac Newton
    Check

12. 12. Edison tested materials inside a light bulb. Look at the table. Which material lasted the longest?

    • coconut string
    • cotton
    • wood
    • hair
    Check

13. 13. What do we now use inside a light bulb?

    • paper, because it is cheap
    • hair, because it is thin
    • metal, because it lasts a long time
    • wool, because it is soft
    Check

14. 14. The Mars Curiosity Rover is a robot. What does it use to move and take photos?

    • petrol
    • water
    • wind
    • electricity
    Check

15. 15. Which of these does electricity do in a fridge?

    • makes music
    • makes light only
    • cools things down
    • makes things move across the room
    Check

16. 16. Look at the table of Edison's tests. Which material was not bright?

    • wood
    • hair
    • cotton
    • wool
    Check