Starter quiz
- Which of the following statements about magnets is correct?
- they have a single pole
- they have two poles ✓
- they have three poles
- they can have any even number of poles
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- Which of the following statements about a south–seeking pole are correct?
- it will point north
- it will point south ✓
- it will attract to the N–pole of a magnet ✓
- it will attract to the S–pole of a magnet
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- If a magnet is broken into two pieces, how many poles will there be in total?
- 1 pole
- 2 poles
- 3 poles
- 4 poles ✓
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- Which of the following statements about the magnetic force is correct?
- it is a non–contact force ✓
- it is a contact force
- it is a charge force
- it is an electrostatic force
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What does the part of a bar magnet, shown in the image, do?- it seeks north
- it seeks south ✓
- it does not seek north or south
- it seeks both north and south
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- Which of the following statements is correct?
- a magnet will attract and repel an iron nail
- a magnet will attract and repel another magnet ✓
- a magnet will only attract another magnet
- a magnet will only repel an iron nail
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Exit quiz
- Which of the following materials can be used to show the magnetic field of a magnet?
- sawdust
- lycopodium powder
- iron filings ✓
- water spray
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- How are iron filings affected by a magnet?
- they mainly collect at the poles ✓
- they are evenly distributed around the magnet
- they collect in the centre of the magnet
- they are repelled away from the magnet
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- What causes a compass needle to point towards Earth's north pole?
- the Moon's magnetic field
- Earth's magnetic field ✓
- the charge inside Earth
- the charge in the atmosphere
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- Which of the following correctly describes the direction in which the needle of a plotting compass will point?
- away from the N–pole of a magnet ✓
- away from the S–pole of a magnet
- towards the N–pole of a magnet
- towards the S-pole of a magnet ✓
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- In which direction do magnetic field lines point?
- from the S–pole of a magnet to the N–pole of a magnet
- from the S–pole of a magnet to the S–pole of a magnet
- from the N–pole of a magnet to the S–pole of a magnet ✓
- from the N–pole of a magnet to the N–pole of a magnet
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- Which of the following statements about magnetic field lines are correct?
- fewer lines in an area indicate a weaker magnetic field ✓
- they can be seen with an infrared camera
- they are continuous ✓
- they come out of the centre of a bar magnet
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Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- The needle of a plotting compass lines up with the magnetic field of a magnet.
- A magnetic field line can be followed from the north–seeking pole to the south–seeking pole of a magnet.
- Arrows on magnetic field lines show the direction in which the north–seeking pole of another magnet would be forced.
- The magnetic field of a bar magnet is symmetrical.
- Magnetic field lines do not cross over and are continuous.
Common misconception
The magnetic field is only at the poles of a magnet.
Provide opportunities for pupils to plot magnetic field lines around a bar magnet and to experiment with a second magnet, as described in the teacher tip.
Keywords
Magnetic field - A region where a magnetic material experiences a force.
Plotting compass - A small compass that can show the field of a magnet.
North-seeking magnetic pole - The end of a compass needle which points to the north of Earth.
South-seeking magnetic pole - The end of a compass needle which points to the south of Earth.
Field line - An imaginary line that shows the direction and shape of a magnetic field.
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