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Homework exercises on Magnetism for a Physical Science course. Also refer to physics, static electricity, AC, DC, forces, compass, poles, iron, generator, electric motors,  education, Ron Kurtus, School for Champions. Copyright © Restrictions

Magnetism - Homework Answers

After you have completed the Magnetism Homework, you can refer to these answers. Although it is better to have known the answer from your reading, the process of writing the correct answer on your homework sheet will help you remember the concepts.

1. What is the force that repels two magnets called?

Magnetism.

2. What is the similarity between electric charges and magnetic poles?

.Both have opposite poles or charges, like poles repel and unlike poles attract..

3. What happens if you cut a magnet in half?

You get two magnets.

4. What sort of harm can magnetism do to you?

If you have steel fillings in your teeth, magnetism can pull them out right of your mouth. (just fooling!) Magnetism does not seem to harm people.

5. What can iron filings sprinkled on a piece of paper show you?

.You can see the shape of the magnetic field..

6. What material will stop a magnetic field?

Iron or steel.

7. How do you magnetize a steel needle?

.Stroke it in one direction with the pole of a magnet.

8. How does a compass work?

.A light-weight magnet pivots on a point to show which direction north is..

9. If the Earth is a huge magnet, which end of the magnet is at the Earth's North Pole?

The south seeking pole. The north-seeking pole of the compass is attracted to the south-seeking pole at the North Pole.

10. How can you show that electricity creates a magnetic field?

Place a compass near a wire with DC current going through it..

11.How do you make an electromagnet?

.Wrap a wire around a piece of iron and send an electric current through the wire..

12. Name 2 applications for electromagnets.

Picking up junk cars, loud speakers, tape recorder heads, electric motors, electric generators, etc.

13. How can you create electricity with a magnet?

Pass a wire through an magnetic field..

14. Name a invention that uses the creation of electricity from a magnet.

Electric generator, microphone.

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