Which of the following is a complete energy transformation for a flashlight? (Assume kinetic thermal in all transformations)

Chemical energy > electrical energy > light energy

Mechanical energy > electrical energy > light energy

Chemical energy > electrical energy

Which of the following represents a complete energy transformation for a ceiling fan? (Assume thermal kinetic occurs in all transformations.)

Electrical kinetic energy > motion kinetic energy

Electrical kinetic energy > chemical potential energy

Mechanical energy > motion kinetic energy

Chemical potential energy > electrical kinetic energy

Which statement best describes an insulator?

A material that does not allow heat to flow through it

A material that allows electricity to flow through it

A material that does not allow liquids to flow through it

A material that cools down quickly when heated

What is the purpose of a simple electric motor?

To convert electrical energy to kinetic energy

To turn mechanical energy to electrical energy

What is the function of a switch in an electric circuit?

To allow electrons to flow through the circuit

To allow heat to flow through the circuit

To allow chemicals to flow through the circuit

Which is an advantage of a parallel circuit over a series circuit?

If one bulb goes out, the other stays lit.

The bulbs get dimmer as you add more.

If one bulb goes out, all go out.

Electricity and Electromagnets

Authored by W. Corr

Physics

8th Grade

NGSS covered

Used 969+ times

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20 questions

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MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which of the following are magnetic poles?

North and South

East and West

Left and Right

Red and Blue

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What do two unlike poles do when they are brought close together?

Nothing

Repel

Attract

Decrease

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The arrow on magnetic field lines shows them flowing in which direction?

Left to Right

North to South

South to North

Right to Left

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What do two unlike poles do when they are brought close together?

Nothing

Attract

Repel

Decrease

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is one difference between electromagnets and bar magnets?

Bar magnets can be turned off but electromagnets cannot

Electromagnets need electricity but bar magnets do not

Bar magnets have a magnetic field but electromagnets do not

Bar magnets are bigger than electromagnets

Tags

NGSS.MS-PS2-3

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

How can you reverse a magnetic field in a circuit?

Connect the battery the other way around

Use a different wire

Increase the current

Use a different battery

Tags

NGSS.MS-PS2-3

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What does the following picture represent?

An electromagnet

A permanent magnet

A generator

A motor

Tags

NGSS.MS-PS2-3

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Electricity and Electromagnets

Which of the following are magnetic poles?

What do two unlike poles do when they are brought close together?

The arrow on magnetic field lines shows them flowing in which direction?

What do two unlike poles do when they are brought close together?

What is one difference between electromagnets and bar magnets?

How can you reverse a magnetic field in a circuit?

What does the following picture represent?

What type of energy does a drawn bow and arrow have?

Which of the following is a complete energy transformation for a flashlight? (Assume kinetic thermal in all transformations)

Which of the following represents a complete energy transformation for a ceiling fan? (Assume thermal kinetic occurs in all transformations.)

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