Magnetic strength
Integrated Science · Grade 7 · about 40 minutes
Strength is greatest at the poles and differs between magnets. Compare by counting pins lifted. Do not hammer a magnet to strengthen it.
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- 7 sections of explanation, worked examples and diagrams
- 1 practice task with hints and worked answers
- A quiz that marks itself as you go
- Your progress kept across every subject you take
Other lessons in this sub-strand
- What a magnet is
- Attractive property
- Repulsive property
- Poles of a magnet
- Basic law of magnetism
- Directional property
- Magnetic strength
- Magnetic and non-magnetic materials
- Testing and classifying materials
- Magnets in fridge doors and compasses
- Magnets in radios and speakers
- Magnets separate mixtures
- Magnets in toys
- Searching magnet applications
- Caring for magnets
- Appreciating magnets