Electricity

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

Tags

NGSS.5-PS1-3

Which of these materials is a good conductor of electricity?

• Rubber

• Metal

• Newspaper

• Glass

Tags

NGSS.5-PS1-3

The student conducted an experiment with circuits. Why was the bulb bright when he closed the switch?

• The switch produced an electric current

• Closing the switch broke the circuit

• Closing the switch completed the circuit

• The switch did not make a difference

Tags

NGSS.3-PS2-3

NGSS.4-PS3-2

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

Tags

NGSS.3-PS2-3

Thicker wires have _______ resistance than thinner wires.

• more
• less
• the same

Electric current is measured in ______.

• Watts
• Volts
• Amperes

Which formulas represents Ohm's law?

• V=IR
• R=IV
• I=RV

Electricity is the flow of _________.

• protons
• neutrons
• electrons

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Two objects with LIKE static charges will

• attract each other
• even out in the end
• repel each other
• cause a spark

Tags

NGSS.MS-PS2-5

Is it possible to CREATE electrons?

• Yes, that's what static electricity is.
• No, you can move them, but they are never created or distroyed.
• Sometimes, it depends on the voltage.
• Sometimes, it depends on the element.

Tags

NGSS.MS-PS1-5