Review- Electromagnetism

Presentation

•

Science

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8th Grade

•

Medium

•

NGSS

MS-PS2-3, MS-PS2-5, HS-PS2-5

Standards-aligned

Alisha Pinkins

Used 100+ times

FREE Resource

10 Slides • 9 Questions

Multiple Choice

The relationship between electricity and magnetism is called _____________.

Electricity

Law of Conservation of Energy

Electromagnetism

Magnetism

Multiple Choice

A _______________ is a coil that carries an electric current.

Solenoid

Simple Electric Motor

Electromagnet

Generator

Multiple Choice

What can be done to increase the number of magnetic objects that an electromagnet picks up?

Make the wire longer

Remove the nail from the center of the wire

Increase the number of coils in the solenoid

Spread the coils out across the nail

Enlarge the Core

You can also make an electromagnet stronger by making the iron core bigger.
A larger diameter of the core means that there is more metal which will further magnify the strength of the magnetic field.

Multiple Choice

Which of these is not a way to increase the magnetism of an electromagnet

Increase the length of the wire.

Increase the thickness of the wire.

Decrease the distance to the power source.

Increase the distance to the power source.

Multiple Choice

Which of these is not an example of an electromagnet.

Refrigerator Magnet

Speakers

Computer Hard Drive

Generators

Multiple Select

(Choose all that apply) Which of these would decrease the power of an electromagnet?

Decrease the distance to the power source.

Decrease the thickness of the wire.

Decrease the amount of current running through the wire.

Decrease the length of the wire.

Multiple Choice

(True of False) An electromagnet is still a magnet when there is not current running through it.

True

False

Multiple Choice

How can you increase the magnetic field strength in an electromagnet?

Increase the number of coils.

increase the voltage

increase the current by reducing the resistance of the coil

all of the above

Multiple Choice

If you brought an unknown pole of a magnet near a North magnetic pole and they repel what is the unknown pole?

North

South

Neutral

not enough information

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