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

Questions

1. 1. What is a circuit?

   • a type of lamp
   • a path for electricity to move along
   • a cell holder
   • a kind of switch
   Check

2. 2. When will a lamp shine?

   • when it is in a complete circuit
   • when it is cold
   • when there is a gap in the circuit
   • when it is in the dark
   Check

3. 3. What does a cell holder do?

   • holds the cell and connects it to the wires
   • holds the lamp
   • stops electricity
   • makes light
   Check

4. 4. How many connections does a cell have?

   • 1
   • 3
   • 4
   • 2
   Check

5. 5. A circuit has a gap. What happens to the lamp?

   • It shines brighter.
   • It changes colour.
   • It gets hot.
   • It does not shine.
   Check

6. 6. What is a conductor of electricity?

   • a person who drives a train
   • a material that electricity flows through
   • a light source
   • a material that stops electricity
   Check

7. 7. Which material conducts electricity?

   • wood
   • paper
   • metal foil
   • plastic
   Check

8. 8. Does plastic conduct electricity?

   • Yes
   • No
   Check

9. 9. Which metal is used in electrical wires because it is a good conductor?

   • gold
   • plastic
   • copper
   • rubber
   Check

10. 10. You add a second cell to a circuit with one lamp. What happens?

    • The lamp goes out.
    • The lamp gets dimmer.
    • The lamp gets brighter.
    • Nothing changes.
    Check

11. 11. You add more lamps to a circuit with the same cells. What happens?

    • The lamps get brighter.
    • Nothing changes.
    • The lamps get dimmer.
    • The lamps change colour.
    Check

12. 12. What would happen if mains wires had no plastic covering?

    • Nothing.
    • They would work better.
    • They would be safer.
    • People could get an electric shock.
    Check

13. 13. Why should you make both cells face the same way in a circuit?

    • so it is heavier
    • so it looks tidy
    • so the circuit works
    • it does not matter
    Check

14. 14. How can you stop a working circuit?

    • make a gap in it
    • add another cell
    • add a lamp
    • add a wire
    Check

15. 15. Why are there wires inside a computer?

    • to carry electricity to its parts
    • to keep it cool
    • to hold it together
    • to make it heavy
    Check