Magnets and Electricity Quiz

Grade 4 · Science · Quiz

Test your knowledge of magnets, magnetic fields, circuits, and electrical materials.

Questions

1. Which material is attracted to a magnet?

   1. Plastic
   2. Wood
   3. Iron
   4. Rubber
   Show answer

   Answer: Iron

   Iron, nickel, and cobalt are magnetic materials attracted to magnets. Plastic, wood, and rubber are not magnetic.

2. What do you call the complete path electricity travels through?

   1. A conductor
   2. A circuit
   3. An insulator
   4. A field
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   Answer: A circuit

   A circuit is a complete path that electricity travels through from the power source, through a device, and back.

3. What happens when a north and south pole face each other?

   1. They repel
   2. They attract
   3. Nothing happens
   4. They make a spark
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   Answer: They attract

   Opposite magnetic poles (north and south) attract each other. Like poles repel.

4. Which of these is an insulator?

   1. Copper
   2. Steel
   3. Aluminum
   4. Plastic
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   Answer: Plastic

   Plastic is an insulator that does not allow electricity to flow through it easily.

5. Every magnet has exactly two poles.

   Show answer

   Answer: True

   Every magnet has a north pole and a south pole — the two ends where the magnetic force is strongest.

6. Electricity can flow through rubber easily.

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   Answer: False

   Rubber is an insulator. Electricity does not flow through rubber, which is why rubber is used to coat wires.

7. Earth has its own magnetic field.

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   Answer: True

   Earth has a magnetic field generated by its iron core. This is why compasses point toward Earth's magnetic north pole.

8. An electromagnet is made by running electricity through a coil of ___.

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   Answer: wire

   An electromagnet is created by winding wire into a coil and passing an electric current through it.

9. The two poles of a magnet are called north and ___.

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   Answer: south

   Every magnet has a north pole and a south pole. Opposite poles attract; like poles repel.

10. Why are electrical wires coated with plastic?

    1. To make them colorful
    2. To make them stronger
    3. Plastic insulates and prevents electric shock
    4. Plastic conducts better
    Show answer

    Answer: Plastic insulates and prevents electric shock

    Plastic is an insulator, so coating wires with plastic prevents electricity from accidentally flowing to people or objects it touches.

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