Circuits: What do you Know?

Electrical energy is ...

• a type of kinetic energy caused by moving electric charges

• a type of potential energy caused by moving electric charges

When you hook up a battery to a light bulb, what flows through the wires from one pole of the battery to the other?

• heat energy

• electrons

• light waves

• sound waves

Electric wires are made out of metal, usually copper. This is because most metal is relatively inexpensive and an excellent ________________.

• current

• transmitter

• conductor

• insulator

What kind of energy makes a hair dryer, television, computer, and refrigerator work?

• thermal

• chemical

• mechanical

• electrical

Which of the following is NOT an example of electricity turning into another form of energy?

• windmill

• radio

• toaster

• light bulb

Which of the following lists the LEAST number of items needed to complete a simple electrical circuit?

• batter, lightbulb, 2 pieces of wire, and a switch

• battery, lightbulb, and 1 piece of wire

• battery, lightbulb, and 2 pieces of wire

• battery, lightbulb, 1 piece of wire, and a switch

The path that electricity travels through is called a _______________.

• circuit

• current

• conductor

• resistor

Which of the following would best conduct the flow of electricity? (think conductors)

• plastic pipe

• styrofoam

• aluminum foil

• a piece of glass

Which of the following materials would be a nonconductor of electricity?

• iron

• water

• copper

• wood

Which material is NOT a conductor of electrical current? (think insulators)

• aluminum wire

• steel wool

• plastic coil

• iron filings