Magnets 01
A magnetised piece of steel can be used in a compass.

Magnets 01

Revise about magnets and how they attract or repel. How many poles does a magnet have?

Aged between 11 and 14? This quiz is especially for you.

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This KS3 Science quiz is all about magnets. A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for a force that pulls on ferromagnetic materials and attracts or repels other magnets. If a material is attracted by a magnet, then it must contain one or more of the elements iron, cobalt or nickel. A magnet has two poles, one is called the north pole and the other is the south pole. If you place two north poles (or two south poles) of magnets near to each other, they will repel, but if you put a north and a south pole together, they will attract.

A magnetic field is strongest close to a magnet and rapidly becomes weaker the further you go from the magnet. You may have used iron filings in your science lessons to see the shape of a magnetic field round a bar magnet. It is difficult to get perfect results, but you should have seen how the lines of magnetism curve round from one pole to the other. When you suspend a magnet in such a way that it can swing around freely, you will find that it ends up pointing towards the north pole and south pole of the Earth. That is because the Earth itself has a magnetic field.

The area around a magnet is called a .......
Magnetic area
Magnetic field
Magnetic force
Magnetic space
All magnets are entirely surrounded by their magnetic field
If a north and a south pole are near each other ..…..
Nothing will happen
They will attract
They will be demagnetised
They will repel
Opposite poles attract, similar poles repel
Which of the following metals is NOT magnetic?
Copper objects will therefore not be attracted to a magnet
If two north poles are near each other .…...
Nothing will happen
They will attract
They will be demagnetised
They will repel
Maglev (stands for magnetic levitation) trains use this idea to lift them off the ground
A magnetised piece of steel can be used in .......
A compass
A computer mouse
A remote control
A watch
A compass points to magnetic north and not geographical north, so, when using a compass for navigation, the difference in location between the two poles has to be taken into consideration
The stronger a magnet .......
The harder the metal
The larger the magnetic force
The smaller the magnetic force
The softer the metal
Magnetic force acts at a distance
The ends of a bar magnet are called .......
East and west poles
North and south poles
North poles
South poles
Magnetic force is strongest at the poles
To show the magnetic area around a magnet we use .......
Aluminium powder
Copper filings
Iron filings
The other materials are not affected by a magnetic field
Which one of the following groups of metals are attracted to a magnet?
Copper, nickel, steel
Gold, nickel, iron
Gold, steel, copper
Steel, iron, nickel
Steel contains mainly the element iron
When a magnet is suspended ..…..
It will line up in E-W direction
It will line up in N-S direction
It will not move
It will point up-down
It lines up with the magnetic field of the Earth
You can find more about this topic by visiting BBC Bitesize - Magnets and magnetic materials

Author:  Sue Davison

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