Quiz about magnetism review

Question 1

electric generators converts mechanical force into

Accepted Answer

electric current

Answer

mechanical energy

Answer

magmatism

Answer

electric energy

Question 2

what is electromagnetic induction

Accepted Answer

the ability to use an electrical current to create a magnetic field and vise versa

Accepted Answer

the ability to use an magnetic field to create an electrical current and vise versa

Answer

when you induce magnets

Answer

when you use chemicals to make science

Question 3

what did Hans Orsted discover

Accepted Answer

that a current in a wire could create a magnetic field

Answer

wires

Answer

a magnetic field

Answer

a magnetic field that could create wires

Question 4

can a magnetic field cause an electrical current

Accepted Answer

true

Answer

false

Question 5

how can you make electro magnet

Accepted Answer

battery, nail, wire

Answer

string, pencil, wire

Answer

battery, nail, string

Answer

battery, pencil, wire

Question 6

what device is made of coils of wire with an electrical current in order to generate magnetic field

Accepted Answer

electromagnet

Answer

magnet

Answer

electron magnet

Answer

electrons

Question 7

what two forces are required for generators electric motors to work

Accepted Answer

electrical and magnetism

Answer

chemical and thermal energy

Answer

magnetism and thermal energy

Answer

thermal and electric energy

Question 8

What is the transfer of electricity in a generator?

Accepted Answer

Mechanical to Electrical

Answer

Physical to Potential

Answer

Electrical to Mechanical

Answer

Yogurt to Light

Question 9

What is the transfer of electricity in a motor?

Accepted Answer

electrical to mechanical

Answer

chemical to mechanical

Answer

mechanical to electrical

Answer

physical to potential

Question 10

This picture shows a turbine generator used to produce electricity at a geothermal power plant.
Electricity is produced by using steam to _____________.

Accepted Answer

spin the turbine generators

Answer

heat the turbine generators

Answer

reduce friction in the turbine generators

Answer

reduce emissions from the turbine generators

Question 11

What would happen if you broke a bar magnet into 8 pieces?

Accepted Answer

You would have 8 complete magnets

Answer

You would have 8 half magnets

Answer

You would have 4 complete magnets

Answer

They wouldn't be magnets anymore

Question 12

A transformer actually transforms

Accepted Answer

voltage

Answer

magnetic field lines

Answer

generators into motors

Question 13

A device that transforms mechanical energy to electrical energy is a

Accepted Answer

generator

Answer

motor

Answer

transformer

Answer

magnet

Question 14

A device that transforms electrical energy to mechanical energy is a

Accepted Answer

motor

Answer

generator

Answer

transformer

Answer

magnet

Question 15

Why did this simple electric motor work?

Accepted Answer

The current from the battery induces a magnetic field in the copper loop, turning it into an electromagnet that repels from/attracts to the permanent magnet

Answer

The electromagnet on top of the battery pulls on the magnetic copper wire

Answer

The magnet induces a current in the copper loop which makes it rotate.

Answer

The magnetic field from the battery induces an electric current in the copper loop, turning it into an electromagnet that repels from/attracts to the permanent magnet

Question 16

How are electromagnets different from permanent 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 17

In large generators in power plants, ___________ rotate inside a coil of wire to produce an electric current.

Accepted Answer

Magnets

Answer

Wind

Answer

Water

Answer

Circuits

Question 18

A magnet is moved in and out of a coil of wire connected to a high-resistance voltmeter. If the number of coils doubles, the induced voltage

Accepted Answer

doubles

Answer

quadruples

Answer

is the same

Answer

halves

Question 19

Which of the following is the most appropriate definition for magnetic field?

Accepted Answer

an area of magnetism surrounding a magnet that applies a force (a push or pull) without actually touching an object

Answer

an area surrounding a magnet that does not apply a force (a push or pull)

Answer

an area directly on the magnet that applies a force (a push or pull) without actually touching an object

Answer

an area surrounding a magnet that applies a force (a push or pull), but only by directly touching an object

Question 20

If placed in a magnetic field, which of the following materials would be affected?

Accepted Answer

a compass

Answer

wood chips

Answer

plastic paper clips

Answer

pieces of glass

Question 21

Like poles on a permanent magnet will

Accepted Answer

repel each other

Answer

attract each other

Answer

always interact

Answer

point in the same direction

Question 22

All permanent magnets have two

Accepted Answer

magnetic poles

Answer

magnetic charges

Answer

magnetic fields

Answer

magnetic needles

Question 23

Which poles on the earth change?

Accepted Answer

the magnetic poles

Answer

the North and South

Answer

the geographic poles

Answer

the telephone poles

Question 24

Electric currents passing through wires will produce a(n)

Accepted Answer

magnetic field

Answer

solenoid

Answer

magnet

Answer

insulator

Question 25

What makes an electromagnet different than a permanent magnet.....select all that apply

Accepted Answer

it can be turned on and off

Accepted Answer

its strength can be increased and decreased

Accepted Answer

its polarity can be reversed

Answer

it does not need any electricity

Question 26

Which way will NOT increase the strength of the magnetic field of an electromagent

Accepted Answer

decreasing the number of loops

Answer

increasing the current

Answer

using a stronger ferromagnetic core

Answer

winding the coils closer together

Question 27

Moving a permanent magnet through a coil of wire will

Accepted Answer

a current will be generated in the wire

Answer

demagnetize the magnet

Answer

the wire will become an electromagnet

Answer

the magnet will become electrified

Question 28

What type of equipment is used to measure the current induced when a wire passes through a magnetic field?

Accepted Answer

a galvanometer

Answer

a transformer

Answer

a generator

Answer

an insulated wire

Question 29

To reverse current direction in a motor the conducted current goes

Accepted Answer

through the brushes to the commutator

Answer

through the commutator to the armature

Answer

through the armature

Answer

in the direction of rotation

Question 30

Colby wants to accomplish a goal of designing an electric generator to charge his phone on family camping trips. He has learned about generators in science class and knows the basic parts he will need. He gathers together a strong magnet, a piece copper wire and a galvanometer. In his first investigation he wants to measure the amount of electricity he can produce using his materials. What should he do with his materials to ensure he is producing the most electricity? Select the three answer choices that correctly outline the steps he should take

Accepted Answer

Shape the wire into coils wide enough for the magnet to pass through

Accepted Answer

Move the magnet through the wire quickly

Accepted Answer

Connect the ends of the wire to the galvanometer

Answer

Coil the wire tightly around the magnet so the magnet does not fall out

Answer

Place the magnet on top of the galvanometer

Question 31

The Hoover Dam produces about 4.2 billion kilowatt-hours of energy each year, using flowing water to rotate fan-like blades in turbine generators. Which of the following summarizes the production of energy at Hoover Dam?

Accepted Answer

Mechanical energy of the flowing water is transformed into electrical energy by rotating coils in a magnetic field, producing an alternating current.

Answer

Mechanical energy of the flowing water is transformed into thermal energy by rotating coils in a magnetic field, producing a direct current.

Answer

Thermal energy of the flowing water is transformed into electrical energy by rotating coils in a magnetic field, producing an alternating current.

Answer

Thermal energy of the flowing water is transformed into mechanical energy by rotating coils in a magnetic field, producing a direct current.

Question 32

Which conclusion is supported by the data?

Accepted Answer

The magnetic field produced is directly proportional to the number of coils.

Answer

The magnetic field produced is inversely proportional to the length of the wire.

Answer

The electric field produced is directly proportional to the length of the wire.

Answer

The electric field produced is inversely proportional to the number of coils.

Question 33

True or false: an ammeter is a device used to measure the magnitude of an electric current.

Accepted Answer

True

Answer

False

Question 34

When a magnet moves through a coil it produces what kind of energy?

Accepted Answer

Electrical

Answer

heat

Answer

light

Answer

mechanical

magnetism review

34 questions

electric generators converts mechanical force into

what is electromagnetic induction

what did Hans Orsted discover

can a magnetic field cause an electrical current

how can you make electro magnet

what device is made of coils of wire with an electrical current in order to generate magnetic field

what two forces are required for generators electric motors to work

What is the transfer of electricity in a generator?

What is the transfer of electricity in a motor?

This picture shows a turbine generator used to produce electricity at a geothermal power plant.
Electricity is produced by using steam to _____________.

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magnetism review

34 questions

electric generators converts mechanical force into

what is electromagnetic induction

what did Hans Orsted discover

can a magnetic field cause an electrical current

how can you make electro magnet

what device is made of coils of wire with an electrical current in order to generate magnetic field

what two forces are required for generators electric motors to work

What is the transfer of electricity in a generator?

What is the transfer of electricity in a motor?

This picture shows a turbine generator used to produce electricity at a geothermal power plant.Electricity is produced by using steam to _____________.

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science

This picture shows a turbine generator used to produce electricity at a geothermal power plant.
Electricity is produced by using steam to _____________.