Quiz about Magnets and Electromagents

Question 1

How are electromagnets different from magnets?

Accepted Answer

you can turn an electromagnet on/off

Answer

magnets can be turned on/off

Answer

magnets are more powerful

Answer

magnets have a North and South pole

Question 2

Like poles on a magnet

Accepted Answer

repel

Answer

attract

Question 3

Unlike poles on a magnet

Accepted Answer

attract

Answer

repel

Question 4

What is this?

Accepted Answer

electromagnet

Answer

magnet

Answer

series circuit

Answer

parallel circuit

Question 5

The Earth produces its own magnetic field.  True or false?

Accepted Answer

True

Answer

False

Question 6

What is magnetism?

Accepted Answer

a force that either attracts or repels certain materials

Answer

invisible objects coming together

Answer

full of electricity

Answer

metals

Question 7

How do you make an electromagnet stronger?

Accepted Answer

add more wire coils and/or batteries

Answer

Add a motor and/or lightbulbs

Answer

Add more light bulbs and/or wire coils

Answer

add more wire coils and/or a switch

Question 8

A coil that is magnetized only when an electric current flows through it is _____________.

Accepted Answer

an electromagnet

Answer

a battery

Answer

a generator

Answer

a conductor

Question 9

What are the ends of a magnet called?

Accepted Answer

North and South poles

Answer

East and west poles

Answer

Left and Right ends

Answer

North and South ends

Question 10

Any material that attracts iron or materials containing iron is a(n)

Accepted Answer

C. magnet

Answer

A. electric generator

Answer

B. solenoid

Answer

D. magnetic force

Question 11

What kind of magnet can be turned on and off?

Accepted Answer

electromagnet

Answer

refridgerator magnet

Answer

magnetite

Answer

iron

Question 12

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

Accepted Answer

Add more coils of wire to the nail.

Answer

Use a smaller battery.

Answer

Reverse the poles of the magnet.

Answer

Remove all the coils and the nail.

Question 13

Using more coils increases the strength of the electromagnet.

Accepted Answer

true

Answer

false

Question 14

Surrounding every magnet is a __________  __________.

Accepted Answer

magnetic field

Answer

electrical current

Answer

another magnet

Answer

an enemy

Question 15

In order for an electromagnet to be formed, an __________ current must pass through a coil of __________ wrapped around an ________ core.

Accepted Answer

electric, wire, iron

Answer

wire, iron, electric

Answer

iron, electric, wire

Answer

excited, hair, apple

Question 16

What will occur if opposite poles of a magnet or electromagnet are brought near each other?

Accepted Answer

The poles will attract

Answer

The poles will repel

Answer

The poles will do nothing

Answer

The magnets will become stronger

Question 17

What is a pole?

Accepted Answer

The strongest push or pull on a magnet

Answer

The middle of a magnet

Answer

The direction a magnet points

Answer

the metal that magnets are attracted to.

Question 18

Which object would attract to a magnet or electromagnet?

Accepted Answer

screw

Answer

button

Answer

yarn

Answer

rubberband

Question 19

What happen if you bring a north pole and a south pole together?

Accepted Answer

They Attract

Answer

<p>The Repel</p>

Answer

The pull apart

Answer

None of the Above

Question 20

What are the differences between an Electromagnet and a Permanent Magnet?

Accepted Answer

A permanent magnet stays a magnet forever and a Electromagnet doesn't.

Accepted Answer

An Electromagnet need electricity and a permanent magnet doesn't

Accepted Answer

You can on and off an electromagnet bit not a permanent magnet

Answer

Electromagnets are less useful.

Answer

You can change the power of the permanent magnet but not an electromagnet.

Magnets and Electromagents

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