KS3 Science Quiz - Magnets 01 (Questions)

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.

1. The area around a magnet is called a .......
[ ] Magnetic area
[ ] Magnetic field
[ ] Magnetic force
[ ] Magnetic space
2. The ends of a bar magnet are called .......
[ ] East and west poles
[ ] North and south poles
[ ] North poles
[ ] South poles
3. Which of the following metals is NOT magnetic?
[ ] Cobalt
[ ] Copper
[ ] Iron
[ ] Nickel
4. If two north poles are near each other .…...
[ ] Nothing will happen
[ ] They will attract
[ ] They will be demagnetised
[ ] They will repel
5. If a north and a south pole are near each other ..…..
[ ] Nothing will happen
[ ] They will attract
[ ] They will be demagnetised
[ ] They will repel
6. 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
7. A magnetised piece of steel can be used in .......
[ ] A compass
[ ] A computer mouse
[ ] A remote control
[ ] A watch
8. To show the magnetic area around a magnet we use .......
[ ] Aluminium powder
[ ] Copper filings
[ ] Iron filings
[ ] Pepper
9. 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
10. The stronger a magnet .......
[ ] The harder the metal
[ ] The larger the magnetic force
[ ] The smaller the magnetic force
[ ] The softer the metal
KS3 Science Quiz - Magnets 01 (Answers)
1. The area around a magnet is called a .......
[ ] Magnetic area
[x] Magnetic field
[ ] Magnetic force
[ ] Magnetic space
All magnets are entirely surrounded by their magnetic field
2. The ends of a bar magnet are called .......
[ ] East and west poles
[x] North and south poles
[ ] North poles
[ ] South poles
Magnetic force is strongest at the poles
3. Which of the following metals is NOT magnetic?
[ ] Cobalt
[x] Copper
[ ] Iron
[ ] Nickel
Copper objects will therefore not be attracted to a magnet
4. If two north poles are near each other .…...
[ ] Nothing will happen
[ ] They will attract
[ ] They will be demagnetised
[x] They will repel
Maglev (stands for magnetic levitation) trains use this idea to lift them off the ground
5. If a north and a south pole are near each other ..…..
[ ] Nothing will happen
[x] They will attract
[ ] They will be demagnetised
[ ] They will repel
Opposite poles attract, similar poles repel
6. When a magnet is suspended ..…..
[ ] It will line up in E-W direction
[x] 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
7. A magnetised piece of steel can be used in .......
[x] 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
8. To show the magnetic area around a magnet we use .......
[ ] Aluminium powder
[ ] Copper filings
[x] Iron filings
[ ] Pepper
The other materials are not affected by a magnetic field
9. Which one of the following groups of metals are attracted to a magnet?
[ ] Copper, nickel, steel
[ ] Gold, nickel, iron
[ ] Gold, steel, copper
[x] Steel, iron, nickel
Steel contains mainly the element iron
10. The stronger a magnet .......
[ ] The harder the metal
[x] The larger the magnetic force
[ ] The smaller the magnetic force
[ ] The softer the metal
Magnetic force acts at a distance