Energy Transformations

The Theory of the Conservation of Energy states -

• Energy can be created, just not destroyed. It changes its form from one type to another.
• Energy can never be created nor destroyed. It can only change its form from one type to another.
• The total energy in our Universe changes, as different forms of energies can be transformed from each other under certain circumstances.
• Energy transformations do not passively occur in our lives, rather we actively make use of energies and transform energies.

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NGSS.MS-PS3-5

Which of the following systems transforms chemical energy to light energy?

• Fan
• Lamp
• Compass
• Burning a candle

The diagram shows a circuit with the bulb glowing. How does the energy change as it moves from inside the battery, along the wires, and through the light bulb?

• electrical → light → chemical
• light → electrical → chemical
• chemical → electrical → light
• chemical → light → electrical

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NGSS.MS-PS3-5

The picture shows a light bulb attached to a hand generator. What energy transformation occurs as the handle of the generator is turned?

• thermal → solar → light
• solar → light → electrical
• mechanical → electrical → light
• electrical → mechanical → light

Which of the following shows the correct order of the energy transformations that occur when green plants produce their food from the Sun’s energy?

• chemical → thermal
• light → chemical
• thermal → light
• chemical → electrical

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NGSS.MS-LS1-6

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When water falls through a dam and turns a turbine connected to a generator, electricity is produced. This electricity is often used to light our homes and offices. Which of the following shows the energy transformations that occurs?

• electrical → light → mechanical
• chemical → mechanical → electrical
• mechanical → chemical → light
• mechanical → electrical → light

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NGSS.HS-PS3-2

NGSS.HS-PS3-3

Energy in motion is called:

• Potential Energy
• Kinetic Energy

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NGSS.MS-PS3-1

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NGSS.MS-PS3-5

Energy that is stored is called:

• Kinetic Energy
• Potential Energy

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NGSS.MS-PS3-2

At which point is potential energy greatest?

• W
• X
• Y
• Z

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NGSS.MS-PS3-2

When you stretch a rubber band, you are storing __________ energy. 

• kinetic 
• potential
• none of the above
• all of the above 

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NGSS.MS-PS3-2