Science Chapter 3 Electricity

What material is a conductor?

• gold

• glass

• chalk

• rubber

What is one use for an insulator?

• It slows down the flow of electric

  current to produce heat and light.

• It stores electric energy for later

  use.

• It allows electric current to flow

  through it.

• It makes electrically charged

  objects safe to handle.

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What will happen in a parallel

circuit if one of its loops is broken?

• electric current will still flow

  through the unbroken loops

• the energy source will stop

  providing energy to move electric

  charges

• electric current will not flow

  through any of the loops

• electric current will still flow

  through the broken loop

A washing machine is an example

of transforming

• electricity into motion energy.

• motion energy into electric energy.

• electricity into light.

• heat into motion energy.

Electric current cannot flow in a

series circuit if

• the circuit contains an insulator.

• there is a break in the circuit.

• the circuit contains a resistor.

• the circuit has only one loop in it.

Which of the following is caused

by the energy of motion?

• resistor

• friction

• conductor

• filament

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One example of a resistor is

• power cord

• parallel circuit

• a battery

• a filament

Which of the following uses

resistors to transform electricity

into heat?

• a toaster

• a car engine

• a gas stove

• a wind turbine

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What will happen to a circuit if a rubber eraser is placed between the battery and one of the wires connected to it?

• The electric current will continue to flow through the wires.

• The rubber eraser will act as an insulator and stop the electric current so the circuit will not work.

• The rubber eraser will act as a conductor and allow the electric current to flow through.

• The rubber eraser will spark and light up.

In a flashlight, the light bulb acts as a/an _____________.

• conductor

• insulator

• energy source

• resistor