Quiz about Unit 6 Magnetism Review

Question 1

The north pole of a compass needle points toward Earth's geographic north pole because

Accepted Answer

Earth's geographic north pole is the magnetic south pole and attracts the needle's north pole.

Answer

Earth's geographic north pole is the magnetic south pole and repels the needle's north pole.

Answer

Earth's geographic north pole is the magnetic north pole and repels the needle's north pole.

Question 2

Like poles __________, north and south poles __________.

Accepted Answer

repel; attract

Answer

attract; repel

Answer

attract; attract

Question 3

The magnetic field is strongest at point ____.

Accepted Answer

Point A

Answer

Point B

Answer

Point C

Answer

Point D

Question 4

As the distance between two magnetic poles increase, the magnetic force

Accepted Answer

decreases.

Answer

increases.

Answer

remains constant.

Question 5

If the magnet in the picture was cut, what would the result be?

Accepted Answer

Question 6

Electric current passing through a wire produces

Accepted Answer

a magnetic field around the wire.

Answer

a permanent magnet.

Answer

geographic poles.

Question 7

After being transmitted by a power plant and before it enters your home, electric current should pass through a

Accepted Answer

step-down transformer.

Answer

step-up transformer.

Answer

turbine.

Question 8

Which of the following is a form of electromagnetic induction?

Accepted Answer

producing electric current by moving a magnet through a wire loop

Answer

producing mechanical energy by sending electric current through an electromagnet

Answer

using an electromagnet to measure electric current

Question 9

A(n) ________ produces electric current.

Accepted Answer

generator

Answer

galvanometer

Answer

electric motor

Question 10

Why do power plants commonly produce alternating current?

Accepted Answer

The voltage of an alternating current can be increased or decreased with transformers.

Answer

Less resistance is created in the wire.

Answer

It is less hazardous to use than direct current.

Question 11

As the current in a wire decreases, the strength of the magnetic field __________. As you move farther from the wire, the strength of the field __________.

Accepted Answer

decreases; decreases

Answer

increases; decreases

Answer

remains constant

Question 12

Groups of atoms with aligned magnetic poles are called

Accepted Answer

magnetic domains.

Answer

magnetic poles.

Answer

magnetic fields.

Question 13

The current from a battery is __________ and the current from an electric socket is __________.

Accepted Answer

direct current; alternating current

Answer

alternating current; direct current

Question 14

Atoms at the north pole of a magnet have

Accepted Answer

north and south magnetic poles.

Answer

only south magnetic poles.

Answer

only north magnetic poles.

Question 15

The region around a magnet where the magnetic forces act is the

Accepted Answer

magnetic field.

Answer

magnetic pole.

Answer

magnetic domain.

Question 16

Current that does not reverse direction is called ________ current.

Accepted Answer

direct

Answer

alternating

Answer

passive

Question 17

Current that reverses direction in a regular pattern is called ________ current.

Accepted Answer

alternating

Answer

direct

Answer

passive

Question 18

Groups of atoms with aligned magnetic poles are called

Accepted Answer

magnetic domains.

Answer

temporary magnets.

Answer

permanent magnets.

Question 19

The location of the strongest magnetic forces on a magnet are the

Accepted Answer

magnetic poles.

Answer

magnetic domains.

Answer

magnetic fields.

Question 20

A Step-Up Transformer

Accepted Answer

increases voltage

Answer

decreases voltage

Answer

maintains voltage

Question 21

A Step-Down Transformer

Accepted Answer

decreases voltage

Answer

increases voltage

Answer

maintains voltage

Question 22

The ___________ has the most turns in a Step-Up Transformer.

Accepted Answer

secondary coil

Answer

primary coil

Question 23

The ___________ has the most turns in a Step-Down Transformer.

Accepted Answer

primary coil

Answer

secondary coil

Question 24

A device that changes electrical energy into mechanical energy.

Accepted Answer

electric motor

Answer

generator

Answer

transformer

Answer

galvanometer

Question 25

A device that increases or decreases voltage in a power line.

Accepted Answer

transformer

Answer

generator

Answer

electric motor

Answer

galvanometer

Question 26

A device that changes mechanical energy into electrical energy.

Accepted Answer

generator

Answer

transformer

Answer

electric motor

Answer

galvanometer

Question 27

A device that uses an electromagnet to measure electric current.

Accepted Answer

galvanometer

Answer

generator

Answer

transformer

Answer

electric motor

Question 28

A temporary magnet that forms when current flows through a wire coil.

Accepted Answer

electromagnet

Answer

turbine

Answer

solenoid

Question 29

A single wire wrapped into a cylindrical wire coil.

Accepted Answer

solenoid

Answer

turbine

Answer

electromagnet

Question 30

A mechanism that rotates when pushed by water, wind, or steam.

Accepted Answer

turbine

Answer

solenoid

Answer

electromagnet

Question 31

The push or pull by electric charges and magnets.

Accepted Answer

electromagnetic force

Answer

electromagnetism

Answer

magnetism

Answer

electromagnetic induction

Question 32

The interaction that determines the movement of electric charges and magnets.

Accepted Answer

electromagnetism

Answer

electromagnetic force

Answer

magnetism

Answer

electromagnetic induction

Question 33

The interaction between magnets and magnetic materials.

Accepted Answer

magnetism

Answer

electromagnetism

Answer

electromagnetic force

Answer

electromagnetic induction

Question 34

The generation of a current by a changing magnetic field.

Accepted Answer

electromagnetic induction

Answer

electromagnetism

Answer

electromagnetic force

Answer

magnetism

Unit 6 Magnetism Review

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