Practice and Revision - Magnetism
Let us practise and revise what we learned about magnetism. Magnetism is a force that attracts certain materials, like iron, and is used in
Core concept
Magnets have two poles - north and south - and like poles repel each other while unlike poles attract.
How it works
Magnets attract materials like iron, nickel, and cobalt, but do not attract materials like wood, plastic, or paper.
Why it matters
A compass uses a magnetic needle that aligns with Earth's magnetic field, always pointing towards magnetic north.
Key detail
Magnetism is used in many devices, like electric motors, speakers, and magnetic locks, showing its wide range of applications.
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Quick notes
• Magnets have north and south poles.
• Like poles repel; unlike poles attract.
• Magnets attract iron, nickel and cobalt.
• Magnets don't attract wood, plastic or paper.
• A compass needle aligns with Earth's magnetic field.
• It points towards magnetic north.
• Magnetism is used in motors and speakers.
• It has wide applications in devices.