Static Electricity Review

Lightning is an electrical discharge between the clouds and the ground. Lightning is an example of

• magnetism

• open circuit

• static electricity

• parallel connection

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Which situation provides the BEST example of static electricity?

• A fork is inserted into the open end of a light socket.

• A copper wire is attached from the battery terminal to the light bulb.

• A sweater and a shirt are stuck together when they are pulled from the clothes dryer.

• A strong magnet is used to remove all of the iron fillings out of a cup filled with white rice.

Marcus notices that his cell phone needs to be charged. He grabs his charging cord and plugs it into the bottom of his phone. What type of energy is being used to charge his phone?

• heat energy

• electrical energy

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NGSS.4-PS3-2

Why are the objects in the picture above repelling each other?

• They both have negative charges.

• They both have different charges.

• They both are blue.

• They both are positively charged.

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A complete circuit is a closed path, or loop, through which electricity flows. What are the needed parts for a complete lighting electrical circuit? Each category contains exactly three answers.

• light bulb

• remote control

• horseshoe magnet

• wire

• battery

If Switch 1 and 2 were closed, which lightbulb would glow?

• Lightbulb 1

• Lightbulb 2

• Lightbulb 3

• Lightbulb 4

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An insulator is any material that does not allow electricity to flow. A conductor is any material that allows the flow of electricity. Which of the following would allow a circuit to work?

• a plastic cup

• a wooden toothpick

• an aluminum can

• a glass bowl

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When Joshua created this graph, he forgot to put labels on each column. What should he label Column A and Column B?

• Column A insulators and Column B conductors

• Column A electrical energy and Column B mechanical energy

• Column A resistors and Column B insulators

• Column A conductors and Column B insulators

Which of the following is NOT an example of an electrical insulator?

• an aluminum can

• cardboard

• pencil

• plastic water bottle

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Which of the following statements correctly compares bar magnets and electromagnets?

• Bar magnets have a permanent magnetic field.

• Electromagnets can be turned on and off with a switch and requires electricity.

• Bar magnets can be turned on and off.

• Electromagnets have a permanent charge.

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