Quiz about Magnetic Forces

Question 1

To force something to move away or apart.

Accepted Answer

repel

Answer

attract

Answer

charge

Answer

pull

Question 2

An area where magnetic materials are attracted or repelled by the magnet.

Accepted Answer

magnetic field

Answer

corn field

Answer

electromagnetic

Question 3

A temporary magnet with a magnetic field produced by electric current.

Accepted Answer

electromagnetic

Answer

magnetic strength

Answer

electric charge

Answer

shock

Question 4

What tells us how strong a magnet is?

Accepted Answer

magnetic strength

Answer

charged particle

Answer

magnetic field

Answer

current

Question 5

This word means "pull together"

Accepted Answer

attract

Answer

repel

Answer

neutral

Answer

current

Question 6

Frederick sets paper clips out on a table. He then takes a magnet, places it directly beneath the paper clips under the table, and moves the magnet. He finds that the paper clips move with the magnet. Why does this happen?

Accepted Answer

Magnetic forces act at a distance, even betwewn objects

Answer

Magnetic force is a repellant force

Answer

Magnetic forces act on wood, like in the table

Answer

The paper clips are feeling the gravitational force of the magnet

Question 7

Two bar magnets are held close together. They are released and allowed to move freely. The bar magnets quickly come together. Which best explains why this happens?

Accepted Answer

The poles facing one another are opposite poles

Answer

The poles facing one another are both south poles

Answer

The poles facing one another are both north poles

Answer

One magnet was bigger than the other

Question 8

In an electromagnet, coils of wire are wrapped around a magnetic object to generate a magnetic field. What the is relationship between number of coils and the strength of the magnetic field?

Accepted Answer

The more coils an electromagntic has, the stronger the magnetic field

Answer

The more coils an electromagntic has, the weaker the magnetic field

Answer

The larger the metal object, the stronger the magnetic field is

Answer

There is no relationship between number of coils and the strength of a magnetic field

Question 9

Surrounding each magnetic is an invisible force field called

Accepted Answer

A magnetic field

Answer

Gravity

Answer

An electric field

Answer

The Force

Question 10

To decrease the strength of a magnetic field around an electromagnet, we must

Accepted Answer

decrease the number of coils

Answer

increase the number of coils

Answer

increase the size of the iron core

Answer

decrease the size of the iron core

Question 11

Magnetic force can cause

Accepted Answer

a push or a pull

Answer

push only

Answer

pull only

Answer

no change in motion at all

Question 12

What interaction will occur between the magnets in the arrangement shown?

Accepted Answer

The magnets will repel each other.

Answer

The magnets will attract each other.

Answer

The magnets will both attract and repel each other.

Answer

The magnets will not interact at all.

Question 13

What interaction will occur between the magnets in the arrangement shown?

Accepted Answer

The magnets will attract each other.

Answer

The magnets will repel each other.

Answer

The magnets will both attract and repel each other.

Answer

The magnets will not interact at all.

Question 14

Which of the following relationships between distance and magnetic force is correct?

Accepted Answer

increased distance = decreased magnetic force

Answer

increased distance = increased magnetic force

Answer

decreased distance = decreased magnetic force

Answer

There is no relationship

Question 15

What is being shown by the magnetic force field lines shown below?

Accepted Answer

Attractive force by opposite poles

Answer

Attractive force by like poles

Answer

Repulsive force by like poles

Answer

Repulsive force by opposite poles

Question 16

What is being shown by the magnetic force field lines shown below?

Accepted Answer

Repulsive force by like poles

Answer

Attractive force by like poles

Answer

Attractive force by opposite poles

Answer

Repulsive force by opposite poles

Question 17

Which diagram would produce the strongest magnetic force?

Accepted Answer

B

Answer

A

Answer

C

Answer

They are all equal in strength

Question 18

Which diagram below would produce the strongest magnetic force?

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 19

The needle in a compass aligns with

Accepted Answer

the Earth's magnetic field.

Answer

nothing. It has its own power source.

Answer

the geographical North pole.

Answer

the Sun's gravitational force.

Question 20

Objects must touch to be affected by magnetic force.

Accepted Answer

False

Answer

True

Question 21

Which of THREE the following are ferromagnetic materials?

Accepted Answer

Cobalt

Accepted Answer

Iron

Accepted Answer

Nickel

Answer

Glass

Answer

Plastic

Question 22

Earth's magnetic field is produced by

Accepted Answer

the Earth's iron core.

Answer

the Sun's electromagnetic radiation.

Answer

the Earth's gaseous atmosphere.

Answer

the Earth's titled axis.

Question 23

This force occurs when there is an attractive and repulsive force between poles.

Accepted Answer

Magnetic

Answer

Electric

Answer

Electromagnetism

Question 24

_________________force is the attractive and repulsive force between two poles.

Accepted Answer

Magnetic

Answer

Electric

Answer

Sound

Question 25

Magnetic Forces

Accepted Answer

C) Magnetic forces can both attract and repel objects.

Answer

A) Magnetic forces can only attract objects.

Answer

B) Magnetic forces can only repel objects.

Answer

D) Magnetic forces have no effect on objects.

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