Electricity Rm 10

Why do electricians always wrap wires in plastic?

• Plastic comes in many different colors

• Plastic is a good electrical conductor

• Plastic makes the wires easy to bend

• Plastic is a good electrical insulator

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NGSS.5-PS1-3

Which of these materials is a good conductor of electricity?

• Rubber

• Metal

• Newspaper

• Glass

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NGSS.5-PS1-3

How can it be explained that someone's hair can stick to a balloon?

• There is static electricity

• There is too much dust in the air

• A parallel circuit was too long

• The person needs to wash his hair

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NGSS.3-PS2-3

A penny is an example of

• An insulator

• an electron

• a proton

• a conductor

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NGSS.5-PS1-3

A science class was completing an experiment on electrical circuits. Why did the bulb go out each time the switch was opened?

• Opening the switch broke the circuit

• The battery was probably going flat

• There was too much electricity flowing

• Opening the switch closed the circuit

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NGSS.3-PS2-3

NGSS.4-PS3-2

____________ stops the flow of electricity.

• A conductor
• An insulator
• A magnet

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NGSS.4-PS3-2

When the switch is closed, the light

• comes on
• stays off
• burns out

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NGSS.4-PS3-2

Two batteries in a circuit make the lights in the circuit brighter than one battery.

• true
• false

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NGSS.4-PS3-2

If the lights are on, the circuit is

• closed
• open

In a parallel circuit the current

• makes one circle
• stays in one path
• splits and goes through two components