Unit 2 Levitation

What happens when electricity flows through a wire?

• A gravitational field is created around the wire.

• The wire becomes cold.

• The wire begins to spin.

• a magnetic field is created around the wire.

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When you climb to the top of a slide, you are gaining?

• gravitational potential energy

• elastic potential energy

• kinetic energy

• chemical potential energy

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Which of the following is true about the relationship between electricity and magnetism?

• Magnetism and electricity cannot be converted to one another

• Electricity can be used to create a magnet.

• Magnetism is based on how gravity attracts electrical energy.

• Electricity and magnetism cancel each other out.

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If you touch a doorknob and get a shock, what causes the shock?

• Electrons moving from the rug to the door.

• Electrons moving from the air to your hand.

• Electrons moving from your hand to the doorknob.

• Electrons moving from your hand to the rug.

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Energy that is stored is

• Kinetic energy

• Electric energy

• Physical energy

• Potential energy

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A waterfall is an example of

• energy being destroyed

• energy being created

• kinetic energy being converted to potential energy

• potential energy being converted to kinetic energy

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Two birds are flying in the sky in a way that their gravitational attraction decreases, they must be flying

• side by side

• next to each other at the same speed

• away from each other

• towards each other

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The force that keeps satellites in orbit around Earth is

• magnetic

• friction

• gravity

• electrical

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Why does it take more force to move a heavy box up a ramp than to move the same box down the ramp?

• There is more friction on the bottom of the box when going up a ramp.

• When you push an object up a ramp, you are working against atmospheric pressure, which is pushing down.

• When you push an object up a ramp, you are working against gravity, which pulls the box downward.

• Gravity is pushing the box up the ramp at the same time you are pushing the box up the ramp.

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A baseball is on top of a table. What type of energy does the baseball have?

• chemical potential energy

• gravitational potential energy

• kinetic energy

• elastic energy

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NGSS.MS-PS3-2