Magnetism Quiz

What are the two poles of a magnet called?

• north and west

• south and east

• west and east

• south and north

Answer explanation

The two poles of a magnet are called the north and south poles. The north pole is attracted to the Earth's magnetic north, while the south pole is attracted to the Earth's magnetic south, making 'south and north' the correct answer.

What do two like poles do?

• interact

• attract

• repel

• open

Answer explanation

Two like poles of a magnet, such as two north poles or two south poles, repel each other. This is a fundamental property of magnets, where like poles push away from one another.

What do opposite poles do?

• retract

• repel

• attract

• apple

Answer explanation

Opposite poles of magnets attract each other. This means that a north pole will pull a south pole closer, while like poles repel. Therefore, the correct answer is 'attract'.

True or false? Permanent magnets are best made of steel?

• True

• False

Answer explanation

True. Permanent magnets are often made from steel, particularly high-carbon steel, due to its ability to retain magnetism effectively, making it a suitable material for creating strong permanent magnets.

What is a temporary magnet best made from?

• copper

• aluminium

• iron

• steel

Answer explanation

A temporary magnet is best made from iron because it has high magnetic permeability and can be easily magnetized and demagnetized. Copper and aluminium are non-magnetic, while steel is less effective than pure iron for temporary magnets.

Which metals are magnetic?

• iron steel cobalt and nickel

• iron copper cobalt and steel

• iron aluminium copper steel

• iron aluminium cobalt copper

Answer explanation

The correct choice is 'iron steel cobalt and nickel' because these metals are known for their magnetic properties. Copper and aluminum, on the other hand, are not magnetic.

To produce temporary magnetism in an iron bar you need to .....

• hit it with a magnet

• stroke it back and forth with a magnet to induce magnetism

• stroke it in one direction with a magnet to induce magnetism

• turn it in circles

Answer explanation

To produce temporary magnetism in an iron bar, you need to stroke it in one direction with a magnet. This aligns the magnetic domains in the iron, inducing magnetism effectively.

If the top of this electromagnet is a North pole, the top of the paper clips will be........

• North

• south

• east

• west

Answer explanation

If the top of the electromagnet is a North pole, it will attract the nearest end of the paper clips, which will also be a North pole. Therefore, the top of the paper clips will be North.

The name for creating a magnetic field in a magnet is called....

• indication

• in demand

• induction

• inaction

Answer explanation

The process of creating a magnetic field in a magnet is known as induction. This term refers to the generation of a magnetic field through the influence of an electric current or a changing magnetic field.

The area around a magnet with magnetic lines of force is called...

• paddock

• lines

• meadow

• field

Answer explanation

The area around a magnet where magnetic forces are present is called a 'field'. This term describes the space in which magnetic lines of force exist, making 'field' the correct answer.