Which of the following is NOT an example of a magnetic force?

are strongest at magnetic poles, where lines are closest together

come from spinning electric charges in the magnets

can push magnets apart or pull them together

depend on how two magnets' poles line up

Which of the following is NOT an example of a magnetic field?

come from spinning electric charges in the magnets

are regions around magnets in which magnetic forces can act

shape that can be shown with lines that surround magnets

are strongest at magnetic poles, where lines are closest together

Which of these is true when the poles of atoms line up?

The atoms are arranged in a domain.

The atoms cancel each other out.

The atoms make a weak magnetic field.

The atoms do not become magnetic.

Which of the following does NOT cause the domains of a magnet's atoms to lose alignment?

Putting the magnet in the refrigerator

Increasing the temperature of the magnet

How do you magnetize something made of iron, cobalt, or nickel?

Rub one end of the magnet in one direction to align the domains.

Put the materials in extreme temperatures.

Melt all of the materials together

These materials cannot be magnetized.

Increasing the number of loops per meter in the coils of a solenoid is one way to

strengthen the solenoid's magnetic field.

increase the wire's electric current.

decrease the wire's electric current.

weaken the solenoid's magnetic field.

What did Faraday's experiments with magnets and electromagnetic induction demonstrate?

Electric current is made when the magnetic field changes.

Strong electromagnets make electric current.

Strong electric current makes electromagnets.

Magnetic fields are made when the electric field changes.

How does a galvanometer make use of the relationship between electric current and magnetic fields?

Galvanometers use magnets to measure current.

Galvanometers generate electric current.

Galvanometers use magnets to convert current into other forms of energy.

Ch. 16 Electromagnetism

Physics

8th - 9th Grade

Used 18+ times

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35 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

A magnet with strong magnetic properties is

a temporary magnet

a permanent magnet

a ferromagnet

electromagnet

MULTIPLE CHOICE QUESTION

1 min • 1 pt

This is a magnet made by an electric current

temporary

permanent

electromagnet

ferromagnet

MULTIPLE CHOICE QUESTION

1 min • 1 pt

This magnet loses magnetization easily

temporary

electromagnet

ferromagnet

permanent

MULTIPLE CHOICE QUESTION

1 min • 1 pt

This material is hard to magnetize, but stays magnetized

temporary

permanent

ferromagnet

electromagnet

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Magnets point north because

Earth is one giant magnet

Magnets don't point north

the equator shifts the planet

Mrs. Owens said so...

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Any material that attracts iron is a(n)

magnet

electricity

copper

solenoid

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The points on a magnet that have opposite magnetic qualities are the

magnetic poles

triangles

Earth's equator

electromagnets

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Ch. 16 Electromagnetism

A magnet with strong magnetic properties is

This is a magnet made by an electric current

This magnet loses magnetization easily

This material is hard to magnetize, but stays magnetized

Magnets point north because

Any material that attracts iron is a(n)

The points on a magnet that have opposite magnetic qualities are the

The magnetic pole that points to the north is the magnet's

The magnetic pole that points to the south is the magnet's

The force that can either push magnets apart or pull them together is

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