Physics End Of Topic Test 😭

Question 1

What are the four magnetic materials?

Answer 1

Iron, cobalt, Nickel & steel

Question 2

Give two examples of non magnetic materials?

Answer 2

Aluminium and copper

Question 3

What does N and S stand for?

Answer 3

N = North seeking pole
S = South Seeking pole

Question 4

The two laws of magnetism are…

Answer 4

• magnets can exert force on other magnets
• magnets can exert forces on unmagnetised magnetic materials (UMMs)

Question 5

A. When two north poles come close, they…
B. When a north and South Pole come close, they…

Answer 5

A. Repel
B. Attract

Question 6

Where are the strongest parts of a magnet?

Answer 6

The poles (N & S)

Question 7

What are the two things that can be learnt from a magnetic field diagram?

Answer 7

1. The closer the field lines, the stronger the force (closest at the poles)
2. The arrows give the direction of the force (North & South)

Question 8

What creates the magnetic field around earth

Answer 8

Electric currents due to the motion of convection of a mixture of molten iron and nickel in earths outer core

Question 9

There are _ _ _ _ _ inside a magnet
A _ _ _ _ _ _ is a group of atoms with _ _ _ _ _ _ _ _ poles

Answer 9

1. Poles
2. Domain

Question 10

Give three examples of what magnets can do?

Answer 10

1. Fridge door seal
2. Purse clasp
3. MRI scanner

Question 11

What do the domains look like in an UMM

Answer 11

They are pointing in lots of different directions

Question 12

What do the domains look like in a magnet?

Answer 12

They point from North to South

Question 13

How do you demagnetise a magnet?

Answer 13

Heating or hitting it