Magnets
Science: KS3, topic 3.4.11
Magnets
You have probably used magnets without knowing it.
Poles
- Magnets have two poles which are found at either end of the magnet.
- The poles are named the South Pole and the North Pole.
- Opposite poles attract.
- Like poles repel.
Non-contact forces
- Magnetic forces are non-contact forces.
- Magnets do not have to be touching to pull together.
Magnetic materials
- Not all metals are magnetic.
- Steel is often magnetic.
- However, steel is a mixture of metals called an alloy.
- Steel contains Iron.
Magnetic metals
- The only magnetic metals are:
- Nickel - Ni
- Iron - Fe
- Cobalt - Co
Test yourself on Magnets
Which of these is NOT a magnetic element?
Which are true of magnets?
Which of these is true about magnets?
A compass needle's South pole is held next to a bar magnet's South pole. What happens to the two poles?