Electricity and Circuits

Which of these is caused by static electricity?

• A magnet attracts a paper clip

• Glue holds two pieces of paper together

• Socks taken from a clothes dryer stick together

• Ice sticks to a car’s windshield

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NGSS.MS-PS2-5

Which choice describes the behavior of an electric charge?

• Like charges attract. Unlike charges repel.

• Like charges repel. Unlike charges attract.

• Like charges attract. Unlike charges attract.

• Like charges repel. Unlike charges repel.

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NGSS.MS-PS2-3

In order to work, a circuit must be:

• Open

• Closed

An example of a conductor is:

• Steel

• Wool

• Plastic

• Fabric

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NGSS.MS-PS2-3

An example of an insulator is:

• Silver

• Glass

• Copper

• Glass

Which device or devices could be removed without breaking the electric circuit?

• Only the bulb

• Only the switch

• The battery and the switch

• The bulb and the switch

The shock you sometimes feel when you touch a metal doorknob on a dry day is electric ________.

• Circuit

• Current

• Discharge

• Resistance

Which MUST be included in an electromagnet?

• Electric current

• Light bulb

• Motor

• Switch

An electric circuit contains a battery, a switch, and a bulb. Which of the following will MOST LIKELY happen if you add another battery to the circuit?

• The bulb will not shine

• The bulb will shine brighter than it did with one battery

• The bulb will shine the same

• The bulb will shine half as bright as it did with one battery

A thin strip of metal foil has a negative electric charge. You bring a balloon that also has a negative charge near the foil. What will MOST LIKELY happen?

• The foil will bend toward the balloon

• The foil will bend away from the balloon

• The balloon will cause the foil to have a positive charge

• The foil will cause the balloon to have a positive charge

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NGSS.MS-PS2-3