Magnets

What will happen when these magnets are brought near each other?

• They will repel each other.

• They will attract each other.

• They will stay at the same position.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Explain why the magnets are 'floating' above each other.

• The magnets are attracting each other as their unlike poles are facing each other.

• The magnets are repelling each other as their like poles are facing each other.

• Nothing happened. The magnets are weak and stayed in their position.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A freely suspended magnet will always point in a __________ direction.

• east-west

• east-north

• north-south

• north-west

A magnet is the strongest at its _________.

• sides

• middle

• poles

• surface

What is one way to increase the strength of a magnetised iron nail using the stroke method?

• Increase the number of batteries

• Change the iron strip to a steel strip

• Increase the number of coils of wires around the iron nail

• Increase the number of strokes of the magnet on the iron nail

What are some ways to increase the strength of a magnetised iron nail using the electricity method? (There is more than one answer.)

• Increase the number of iron nails

• Increase the number of batteries

• Increase the number of coils of wire around the iron nail

• Increase the number of strokes of magnet on the iron nail

Which of the following is not a way to demagnetise a magnet?

• Heat the magnet over a fire.

• Soak the magnet in a pail of water.

• Drop the magnet many times on the floor.

• Hit the magnet with a hammer many times.

Which of the following cannot be magnetised by a magnet?

• iron nail

• steel nail

• copper nail

What will happen to the number of paper clips attracted if the iron nail is replaced with a copper nail?

• There will be no paper clips attracted.

• The number of paper clips will decrease.

• The number of paper clips will increase.

• The number of paper clips will stay the same.

Louis had a bar magnet with its north pole, N, marked as shown in the picture.

Which of the following correctly shows what pole X is?

• N-pole

• S-pole