Electricity and Electric Circuits

What is electricity?

• the energy produced when an object vibrates

• the energy produced by electrons

• the energy stored in the bonds of chemical compounds

The flow of electrical energy is called a

• current

• circuit

• insulator

For electricity to flow, what do you need?

• only a battery

• a battery and a lightbulb

• a battery, light bulb, and wire in a closed circuit

Electricity cannot flow through rubber. Rubber is therefore a___________.

• electron

• conductor

• insulator

Electricity can flow through copper. Copper is therefore a ______________.

• insulator

• conductor

• conductor and insulator

How does a switch control the flow of electricity?

• a switch can convert electricity into heat

• a switch can open or close a circuit

• a switch doesn't affect the flow of electricity

Marvin tested a material in a lab. He put it between a wire and a battery in a closed circuit. What evidence might have led him to decide the material is a conductor?

• the battery lost its energy

• the light bulb turned on

• the wire did not get hot

Sylvia tested a material in the science lab. She put it between a wire and a battery in a closed circuit. What evidence might have led her to decide the material is an insulator?

• the battery did not die

• the light bulb was off

• the wire was hot

• the wire

What is a current?

• a steady flow of electricity

• static electricity

• sort burst of electricity

What is the function of a power source like a battery or electricity in a circuit?

• it provides a steady source of static electricity

• it provides a means through which the circuit can be broken

• it provides the energy that makes electricity

Tags

NGSS.MS-PS3-5