Lesson 3 Check: Electricity

An object in an electrical circuit that resists the flow of energy is called a _________.

• a magnet

• a compass

• a voltage

• a resistor

Which product would change electrical energy to heat energy?

• Alarm clock

• hair dryer

• ceiling fan

• cell phone

A conductor is a _______________.

• a material that increases the number of charged particles

• a material that increases the amount of electricity

• a material through which electricity flows easily

• a material that stops the flow of energy

_________ is an excellent thermal conductor because it conducts heat easily.

• Cotton

• Rock

• Aluminum

• Water

The flow of energy through a conductor is known as a _______________.

• resistance

• electrical current

• static electricity

• voltage

A material that slows or stops the flow of energy is a/an ___________.

• conductor

• current

• voltage

• insulator

True or False: A lightbulb is an example of a resistor.

• True

• False

___________ are responsible for safely wiring buildings which allows electricity to flow to all areas of a house or building.

• Farmers

• Doctors

• Architects

• Electricians

A ______ is a path through which electric current can flow. It often consists of wires.

• circuit

• voltage

• conductor

• resistor