Electricity

Current electricity flows through

• wires

• string

• rubber

• plastic

How does a switch work?

• It opens and closes the circuit

• It makes the light bulb brighter

• It provides the energy for the circuit.

Electric charges that are alike _______ each other.

• Attract

• Repel

One example of static electricity is...

• rain

• thunder

• lightning

Which of the following is an insulator?

• copper

• wood

• silver

• salt water

The girl's hair and the comb are attracting one another. The hair and the comb have

• opposite charges

• like charges

Sarah is learning about human harnessed electricity as well as naturally occurring electricity. Which is an example of Sarah coming in contact with naturally occurring electricity?

• Sarah quickly walks across the carpet in the socks and feels a small shock on her foot.

• Sarah felt a small sting on her finger when she changed the lightbulb on her lamp.

• Sarah was lightly shocked when she inserted the plug of her lamp in the wall socket.

• Sarah accidently left her curling iron plugged in and burned her hand on the metal.

Which of the following correctly describes one way in which static electricity is different from the current electricity that is used in homes?

• Static electricity is a quick release of energy.

• Static electricity requires magnets and coils of wire.

• Static electricity flows at a constant rate.

• Static electricity always goes in the same direction.

Jordan rubs her socks along the wool carpet as she walks across her house. She grabs onto a metal door knob. What will most likely happen as she touches the door knob?

• The charge will disappear.

• The chair will repel her.

• She will get a light shock.

• She will build up more charge.

When is it easiest for a person to build up static electricity?

• After a rainstorm when they air is warm and humid

• During the winter when the air is dry

• After a lightning strike when the air is full of electricity

• During the spring when the ground is wet