Exam Review: Energy

What is the formula for calculating kinetic energy?

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NGSS.MS-PS3-1

NGSS.MS-PS3-4

Which of the following is an example of gravitational potential energy?

• A moving car

• A book on a shelf

• A spinning top

• A flowing river

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NGSS.MS-PS3-2

Explain how energy is conserved when a pendulum swings from its highest point to its lowest point.

• The potential energy is converted to kinetic energy at the lowest point.

• The kinetic energy is converted to potential energy at the lowest point.

• The energy is lost as heat at the lowest point.

• The energy is destroyed at the lowest point.

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

Describe the process of conduction in heat transfer.

• Heat is transferred through electromagnetic waves.

• Heat is transferred through the movement of fluids.

• Heat is transferred through direct contact between materials.

• Heat is transferred through chemical reactions.

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NGSS.MS-PS3-4

• 49 J

• 98 J

• 196 J

• 245 J

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NGSS.MS-PS2-4

NGSS.MS-PS3-2

A roller coaster car at the top of a hill has 5000 J of potential energy. Assuming no energy is lost, what will be its kinetic energy at the bottom of the hill?

• 0 J

• 2500 J

• 5000 J

• 10000 J

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NGSS.MS-PS3-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Evaluate the effectiveness of convection in heating a room compared to conduction.

• Convection is less effective because it requires direct contact.

• Convection is more effective because it circulates warm air throughout the room.

• Conduction is more effective because it heats the air directly.

• Both are equally effective in all situations.

Which of the following is an example of radiation in heat transfer?

• Heat from a stove warming a pot

• Heat from the sun warming the Earth

• Heat from a heater warming the air

• Heat from a fire warming a metal rod

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NGSS.MS-PS4-2

Discuss how the law of conservation of energy applies to a bouncing ball.

• Energy is lost as the ball bounces.

• Energy is conserved as potential energy is converted to kinetic energy and vice versa.

• Energy is created as the ball bounces.

• Energy is destroyed as the ball bounces.

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NGSS.MS-PS3-2

NGSS.MS-PS3-5

A 3 kg object is moving with a velocity of 4 m/s. Calculate its kinetic energy.

• 12 J

• 24 J

• 48 J

• 96 J

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NGSS.MS-PS3-1