Magnetic poles

Magnetic poles

Magnetic Poles

• Magnets attract magnetic materials

• There is a magnetic force that pulls on a piece of steel when a magnet attracts it

• Magnetic forces are strongest at the two ends of the magnet

• These ends are called magnetic poles

• ^{Why do the magnets have the letters 'n' and 's'?}

Magnetic Poles

• If you hang a magnet so it is free to turn around, it will turn until one end (magnetic pole) points north, and the other points south

• The north pole points north

• The south pole points south

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Two magnets

• The diagram shows what happens when poles of two magnets are near each other

• They can attract or repel each other ^{(push each other away)}

• The green arrows show the direction of the magnetic force

Magnet rules

• Like poles repel

• Unlike poles attract

• Like poles = both north poles or both south poles

• Unlike poles = one north and one south pole

• Sometimes people remember the rules with the expression: 'opposites attract'

Making a magnet

• You can use a permanent magnet to magnetise a piece of iron or steel

Multiple Choice

What is a Magnetic pole

• stored energy

• push objects away from each other

• one of the two opposite ends of a magnet

• to move from one object to another

Multiple Choice

What are the names of the forces involved in magnetism?

• Attraction and Repulsion

• push or pull

• kinetic or potential

• push and release

Multiple Choice

Where is the force of attraction the strongest on a magnet?

• at the poles

• in the middle

• above the magnet

• below the magnet

Multiple Choice

Which poles attract each other?

• north and south

• south and south

Multiple Choice

Looking at the drawing. If you tried to move these 2 magnets closer together, what would you feel?

• A Pushing force

• A Pulling force

• No Force

• Let the Force be with YOU

Multiple Choice

These magnets will _____

• Attract
• Repel

Multiple Choice

What would happen is a north pole of a magnet came close to a north pole of another magnet?

• they would be attracted to each other

• they would be repelled from each other

Multiple Choice

Magnets can interact without touching.

• True
• False

Multiple Choice

If two magnets come together what is it called?

• Repel

• Force

• Attract

• None of the Above

Multiple Choice

Where is the force of attraction the strongest on a magnet?

• at the poles

• in the middle

• above the magnet

• below the magnet

Multiple Choice

True or False: All metals stick to magnets.

• True

• False

Multiple Choice

Magnets are attracted to foil and plastic bags

True or False

• True

• False