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Grade 7 · Science · Unit 3 of 6

Circuits & Static

Circuits, conductors and static charge

What your child practises

Complete circuits, series versus parallel wiring, conductors and insulators, adding cell voltages, and static electricity (like and opposite charges, lightning).

Yukon Curriculum learning standard: Electromagnetic force: electric circuits, conductors and insulators, static charge

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    What does a switch do in a circuit?

    • It stores extra electricity
    • It changes electricity into light
    • It makes the battery stronger
    • It opens or closes the loop to stop or start the current

  2. Question 2

    What does a circuit breaker or fuse do?

    • It turns AC into sunlight
    • It adds extra current when needed
    • It stores power during a blackout
    • It breaks the circuit if too much current flows, preventing overheating

  3. Question 3

    Conductor or insulator? Sort each material.

    Sort into: ⚡ conductor · 🚫 insulator

    • 🪟window glass
    • 🪵dry wood
    • ✏️graphite pencil lead
    • 🔌copper wire
    • 🧶wool yarn
    • 🥄steel spoon
    • 🔩iron nail
    • 🧤rubber glove

  4. Question 4

    Which part of a circuit is the source of electrical energy?

    🔋
    • the switch
    • the wire
    • the bulb
    • the battery

  5. Question 5

    A parallel circuit has 4 identical bulbs and a battery. One bulb burns out. How many bulbs stay lit?

    💡💡💡💡

    answer box

  6. Question 6

    Each cell gives 1.5 V. If 4 cells are connected in series (end to end), what is the total voltage?

    🔋🔋🔋🔋

    answer boxV

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