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Yr3 Magnetism

Tools

A	B
" like poles.........	repel "
"unlike poles.....	attract"
iron, cobalt and nickel	are magnetic metals
a fridge door seals well	because magnet behind rubber seal attracts steel frame
a compass needle .....	points North
the north pole of a bar magnet	is usually red (if red&blue halves)
Heating and hammering	can weaken a magnet
a strong magnet	picks up more steel paper clips
a maglev train	floats, due to repulsion of magnetic poles
the earth has it's own	magnetic field
iron filings	show up a magnetic field
aluminium cans	are not magnetic

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