Inspire Science Unit2 Lesson3: Electricity

A lamp is plugged into an extension cord. The extension cord is plugged into a wall outlet. How does the extension cord help the light work?

• The extension cord makes the lamp brighter.

• The extension cord makes the lamp easier to operate.

• The extension cord transfers sound energy to the lamp.

• The extension cord transfers electric currents from the outlet to the lamp.

A flow of electrical charges is known as _____

• resistance

• electrical current

• static electricity

• voltage

When a person touches an electric fence, the electric ________________ passes through their body, causing a shock.

• current

• field

• charge

• wave

In an electric circuit, a battery can act as a __.

• voltage source

• conductor

• insulator

• resistor

A conductor is a

• a material that increases the number of charged particles

• material that increases the amount of electricity

• material through which electricity flows easily

• material that stops the flow of energy

Which device would you study to learn about converting electrical energy into heat energy?

• Electric oven

• Television

• Refrigerator

When Ben placed his hand on a Van de Graaf generator, he noticed that small pieces of paper nearby were attracted to his hand. After he let go of the generator, the paper no longer moved toward him. What does this observation suggest about the behavior of charged particles?

• Charged particles are being created from the air.

• Charged particles are being transferred between objects.

• Charged particles are being destroyed by the generator.

• Charged particles are being pulled from the floor.

A switch in a circuit _____

• acts as an insulator

• absorbs electricity

• allows or stops the flow of electricity

• keeps the flow of electricity at a safe level

A resistor in an electrical circuit is something that _________the flow of energy.

• creates

• helps

• resists

• circles

The 2 types of circuits that we studied are called ____(choose 2)

• ceiling

• parallel

• series

• voltage