Review Conservation of Energy

At what point will the roller coaster car have transformed the greatest amount of gravitational potential energy into kinetic energy?

• W

• X

• Y

• Z

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NGSS.MS-PS2-4

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As the car moves down the slope, the amount of (a)   energy decreases while the amount of (b)   energy increases.

• kinetic

• potential

• thermal

• mechanical

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Look at the diagram of a light bulb on a simple circuit. Over time, the battery loses power and the bulb dims. Finally, it goes out. What happened to the energy?

• The battery creates new energy.

• There is no energy being transformed by the system.

• Energy is being destroyed by the system.

• Energy is leaving the system in the form of light.

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Which energy transformation occurs in photosynthesis, including the concept of energy conservation?

• Chemical energy to light energy

• Light energy to chemical energy

• Mechanical energy to thermal energy

• Thermal energy to mechanical energy

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Look at the diagram.

• Energy is created at each trophic level.

• Energy is destroyed as it moves through the food web.

• Energy is conserved and transferred from one organism to another.

• Energy is only present in the producers.

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NGSS.MS-LS2-3

Which is an example of an energy transformation from chemical to electrical to light energy?

• A. A bolt of lightning causing thunder

• B. A candle lighting up a room

• C. A campfire warming up and illuminating an area

• D. A battery causing a flashlight to shine

Match the following

• mechanical energy

• 
• food web

• 
• electric circuit

• 
• conservation of energy

• 

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The law of conservation of energy states that energy cannot be created or destroyed. ​ (a)   or​ (b)  

• created
• destroyed
• energy
• work
• power

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NGSS.MS-PS3-5

As the ball is dropped, the potential energy decreases while the kinetic energy increases however the amount of energy stays the same.

• True

• False

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NGSS.MS-PS3-5

Which statement about energy is NOT true?

• Energy cannot be created or destroyed.

• Energy is used up when an object moves.

• Energy can be converted from one form to another.

• There are manyforms of energy including: thermal, nuclear, mechanical, chemical, electrical, and electromagnetic.

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