What characteristics do magnetic substances have?

They can push or pull objects without touching them

They can give you a "shock" when you touch them

They are always black and cold to touch

They fall faster than other objects when you drop them

Which is not a property of a magnet?

all magnets have a force of attraction or repulsion

all magnets are surrounded by a magnetic field

You know this substance is magnetized because

all the domains have right angles

In this image, matching north poles from two magnets are introduced. What do you predict will be the outcome?

The two north poles will repel each other

There will be no interaction. The poles of magnets do not have an effect on one another.

The two north poles will attract each other

The two magnets will combine and become one magnet

Where is Earth's magnetic field strongest?

Where the lines are close together at the poles

Along the inside lines on either side

In the space outside of the lines

Where are the magnetic forces strongest?

In the middle of the two magnets

Why does the compass needle move at different locations?

Because the needle is attracted to the magnetic field produced by the magnet

Because it is being attracted to the Magnetic North Pole

What is true about electricity and magnetic fields?

Electricity always creates a magnetic field.

Electricity is needed to create any magnet.

Electricity is stronger than a magnetic field.

Electricity prevents magnetic fields from occurring.

When running a current through a wire, what do the blue lines represent?

A magnetic field that was created

How can a magnet be used to produce an electric current?

Spin the magnet around inside a coil of wire.

Hold a magnet next to a piece of wire.

Electromagnetic Induction (pHet simulation) is...

the use of the movement of magnets around a coil of wire to create an electrical current through the wire

the use of the movement of electricity around a coil of wire to create an electrical current through the wire

The voltmeter is at 0 in this image. How would you manipulate the experiment to create electricity (measured in volts)?

Flip the magnet around so the North pole is facing out

Add more coils around the paper cylinder

Why is magnetic induction important?

Electromagnets are very versatile

Every electric motor uses induction

Because it's an easy way to produce electricity

What can electromagnets do that regular magnets can't?

They are both the same in every way

The diagram shows a flat, rectangular coil placed between the poles of a magnet. There is a current in the coil that makes it turn in the direction shown in the diagram. Which change would make the coil turn in the opposite direction?

reversing only the direction of the current in the coil

decreasing the current in the coil

increasing the number of turns on the coil

reversing both the direction of the current in the coil and the poles of the magnet

A current-carrying coil in a magnetic field experiences a turning effect. How can the turning effect be increased?

Increase the number of turns on the coil.

Reduce the size of the current.

Reverse the direction of the magnetic field.

Physical Science Magnetism Review

Authored by Charles Martinez

Physics

8th Grade

NGSS covered

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46 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

What will happen when these magnets are brought close together?

They will attract each other.

They will repel each other.

Both magnets will turn to the left

Both magnets will turn to the right

Tags

NGSS.MS-PS2-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Magnets have a north and a south ___________

shape

color

pole

region

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Iron, Nickel and cobalt are all __________________ materials

Shiny

poles

magnetic

cold

Tags

NGSS.MS-PS2-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Where is the strongest attraction force of the magnet?

at the poles

in the middle

above the magnet

below the magnet

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A magnet will attract scissors if the scissors contain:

copper

aluminum

gold

nickel

Tags

NGSS.MS-PS2-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What happens when two north poles of a magnet are placed together?

they repel

they attract

they cancel each other out

the strength of the magnet is doubled

Tags

NGSS.MS-PS2-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is true about a bar magnet?

Its magnetic field is strongest near its center.

It is surrounded by a magnetic field.

The north pole is stronger than the south pole.

The south pole is stronger than the north pole.

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Physical Science Magnetism Review

What will happen when these magnets are brought close together?

Magnets have a north and a south ___________

Iron, Nickel and cobalt are all __________________ materials

Where is the strongest attraction force of the magnet?

A magnet will attract scissors if the scissors contain:

What happens when two north poles of a magnet are placed together?

Which of the following is true about a bar magnet?

A device that uses a free-moving magnetic needle to show direction is a:

This is a picture of a ________________ magnet.

What characteristics do magnetic substances have?

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