Magnets

Question 1

What does a magnet do?

Answer 1

A magnet is an object that produces a magnetic field, attracting certain metals like iron.

Question 2

True or False: All metals are magnetic.

Answer 2

False

Question 3

What are the two types of magnets?

Answer 3

Permanent magnets and temporary magnets.

Question 4

Fill in the blank: The area around a magnet where magnetic forces can be detected is called the __________.

Answer 4

magnetic field

Question 5

What do we call the ends of a magnet?

Answer 5

Poles

Question 6

True or False: Like poles of a magnet repel each other.

Answer 6

True

Question 7

What happens when you cut a magnet in half?

Answer 7

You create two smaller magnets, each with a north and south pole.

Question 8

What is magnetic field strength measured in?

Answer 8

Tesla (T)

Question 9

Multiple Choice: Which of the following materials is NOT magnetic? A) Iron B) Copper C) Nickel

Answer 9

B) Copper

Question 10

What is the function of a compass?

Answer 10

A compass uses a magnet to indicate direction relative to the Earth’s magnetic field.

Question 11

Fill in the blank: The Earth’s core is primarily made of __________, which creates its magnetic field.

Answer 11

iron

Question 12

True or False: Magnetic poles can exist independently.

Answer 12

False

Question 13

Multiple Choice: Which device uses magnets to generate electricity? A) Generator B) Battery C) Resistor

Answer 13

A) Generator

Question 14

What is the term for the force exerted by a magnetic field?

Answer 14

Magnetic force

Question 15

Fill in the blank: The __________ effect involves the generation of an electric current by changing a magnetic field.

Answer 15

electromagnetic

Question 16

True or False: Magnets can attract and repel each other.

Answer 16

True

Question 17

What type of magnet is created by an electric current?

Answer 17

Electromagnet

Question 18

Fill in the blank: The law of __________ states that opposite poles attract and like poles repel.

Answer 18

magnetism

Question 19

True or False: All magnets have both a north and a south pole.

Answer 19

True

Question 20

Can you turn electromagnets on and off?

Answer 20

Yes - the electricity makes it magnetic

Question 21

What would happen if you put a steel core inside an electromagnetic?

Answer 21

It would become a permanent magnet, it doesn’t lose its magnetism unlike soft iron

Question 22

What are the three ways to make your electromagnet stronger

Answer 22

1. Increase the amount of turns on the coil
2. Increase the current
3. Add a soft iron core

Question 23

What are the names for South and North in magnets

Answer 23

Poles

Question 24

What metals are magnetic?

Answer 24

Iron
Steel
Cobalt
Nickel

Question 25

What metals are not magnetic?

Answer 25

Aluminium Copper Zinc