KS3 Magnets - Y8

What is a permanent magnet?

• A magnet that loses its magnetism over time

• A magnet that retains its magnetism indefinitely

• A magnet that can be turned on and off

• A magnet that only works in water

Which of the following is a type of temporary magnet?

• Bar magnet

• Electromagnet

• Horseshoe magnet

• Neodymium magnet

Where are the magnetic poles located on a bar magnet?

• At the centre

• At the ends

• Along the sides

• At the top and bottom

What happens when like poles of two magnets are brought close to each other?

• They attract

• They repel

• They neutralise

• They have no effect

Which material is commonly used to make permanent magnets?

• Aluminium

• Copper

• Iron

• Plastic

What is the unit of magnetic field strength?

• Newton

• Tesla

• Joule

• Watt

Which of the following materials is not magnetic?

• Steel

• Nickel

• Wood

• Cobalt

What is the direction of the magnetic field lines outside a bar magnet?

• From north to south

• From south to north

• From east to west

• From west to east

Which of the following is a property of magnetic poles?

• They can exist independently

• They always come in pairs

• They are not affected by temperature

• They are not affected by distance

What is the effect of heating a magnet?

• It strengthens the magnet

• It weakens the magnet

• It has no effect

• It changes the colour of the magnet