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- 1. Multiple Choice
Current electricity flows through
wires
string
rubber
plastic
- 2. Multiple Choice
How does a switch work?
It opens and closes the circuit
It makes the light bulb brighter
It provides the energy for the circuit.
- 3. Multiple Choice
Electric charges that are alike _______ each other.
Attract
Repel
- 4. Multiple Choice
One example of static electricity is...
rain
thunder
lightning
- 5. Multiple Choice
Which of the following is an insulator?
copper
wood
silver
salt water
- 6. Multiple Choice
The girl's hair and the comb are attracting one another. The hair and the comb have
opposite charges
like charges
- 7. Multiple Choice
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.
- 8. Multiple Choice
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.
- 9. Multiple Choice
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.
- 10. Multiple Choice
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
- 11. Multiple Choice
Which of the following materials is an electrical conductor?
Plastic spoon
Silver-colored plastic spoon
copper spoon
wooden spoon
- 12. Multiple Choice
A material that does NOT let electricity pass through it is called ...
An electrical conductor
An electrical insulator
An electrical source
An electric appliance
- 13. Multiple ChoiceAn incomplete circuit is shown.
To complete the circuit, a wire should be placed from —Point D to Point CPoint B to Point CPoint A to Point DPoint B to Point D - 14. Multiple ChoiceThis circuit has a battery, buzzer, and switch.
When the switch is closed the buzzer will sound because -the switch gives energy to the batterythe buzzer is made of special plasticthe wires are cooled by the surrounding airelectricity can flow in a complete path - 15. Multiple ChoiceChoose the correct sentence.This circuit will work because it is an open circuit.This circuit will work because it is a closed circuit.This circuit will NOT work because it is an open circuit.This circuit will NOT work because it is a closed circuit.
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