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AQA GCSE Physics Basics of magnetism

Basics of magnetism

This page covers the following topics:

1. Magnetism
2. Permanent and Induced Magnets
3. Uses of Magnetic Materials
4. Earth’s Magnetic Field

The region around a magnet where a force acts on another magnet or on a magnetic material is called the magnetic field.

Magnetism

A permanent magnet produces its own magnetic field and is always magnetic. An induced magnet is a material that becomes magnetic when placed in a magnetic field.

Permanent and Induced Magnets

The force between a magnet and a magnetic material is always a force of attraction.

Uses of Magnetic Materials

The Earth has a magnetic field. This is due to the magnetic properties of the Earth’s core.

Earth’s Magnetic Field

1

The diagram shows 2 iron nails that have become induced magnets. Explain why there is a gap between them (indicated by the arrow).

The diagram shows 2 iron nails that have become induced magnets. Explain why there is a gap between them (indicated by the arrow).

2

What is an object called that creates a magnetic field?

What is an object called that creates a magnetic field?

3

The diagram shows an iron nail before and after a magnet is placed near it. Fill in the gap: the iron nail becomes ....... when a magnet is placed near it.

The diagram shows an iron nail before and after a magnet is placed near it. Fill in the gap: the iron nail becomes ....... when a magnet is placed near it.

4

Complete the sentence: an induced magnet loses its magnetism when ...

Complete the sentence: an induced magnet loses its magnetism when ...

5

A needle on a plotting compass points in the direction of the Earth’s magnetic field. Which pole does the tip of the needle point at?

A needle on a plotting compass points in the direction of the Earth’s magnetic field. Which pole does the tip of the needle point at?

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