What is the difference between conductors and insulators?

Conductors allow the flow of electric current, while insulators do not.

Conductors are always solid, while insulators can be liquid or gas.

Conductors are used for cooking, while insulators are used for heating.

Conductors allow the flow of water, while insulators do not.

Give an example of a good conductor and a good insulator.

Good conductor: Copper, Good insulator: Rubber

Good conductor: Wood, Good insulator: Silver

Good conductor: Glass, Good insulator: Iron

Good conductor: Plastic, Good insulator: Aluminum

Explain why metals are good conductors of electricity.

Metals have free electrons that can move easily within the structure of the metal.

Metals contain insulating materials that prevent the flow of electricity.

Metals have a negative charge that attracts electrons and allows them to flow easily.

Metals have a high resistance to the flow of electricity.

Why are rubber and glass considered good insulators?

They have high resistance to the flow of electric current.

They are good conductors of electric current.

They have low resistance to the flow of electric current.

Voltage is the difference in electric potential between two points

Voltage is the flow of electric charge

Voltage is the brightness of a light bulb

Voltage is the resistance to the flow of electric current

Explain the concept of resistance in an electric circuit.

Opposition to the flow of electric current

Complete absence of electric current

Facilitation of electric current flow

Enhancement of electric current flow

What factors affect the flow of electric current in a circuit?

Diameter, Length, Temperature, Material

Temperature, humidity, and pressure

Electricity

Authored by Dale Szymanski

Science

7th Grade

NGSS covered

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19 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is electric current?

The flow of electrons

The flow of protons

The flow of neutrons

The flow of atoms

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the unit of measurement for resistance?

Voltage

Ampere

Watts

Ohms

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is Resistance?

The flow of electrons

Electric potential difference

A battery

The ability to reduce the flow of electrons

MULTIPLE CHOICE QUESTION

1 min • 1 pt

current is measured in....

volts

amps

watts

mph

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What characteristics impact resistance of a material?

Thickness

Temperature

Length

All of these

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If the voltage stays the same, but the resistance goes up, the current will....

increase (speed up)

decrease (slow down)

stay the same

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the current increases it could be because of...

increasing voltage

decreasing resistance

both

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Electricity

What is electric current?

What is the unit of measurement for resistance?

What is Resistance?

current is measured in....

What characteristics impact resistance of a material?

If the voltage stays the same, but the resistance goes up, the current will....

If the current increases it could be because of...

An object through which electrons can easily flow is called a(n) ___________.

An electric current is made up of _____ charged electrons

A complete, unbroken path that charges can flow through is called an __________________.

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