Energy Transformations Review

What does the law of Conservation of Energy state?

• An object loses all energy when it stops moving.

• Energy can only be categorized as potential or kinetic.

• Energy cannot be created or destroyed, it can only change from one energy to another energy.

• Energy is always being produced.

Tags

NGSS.MS-PS3-5

Which of the following is an example of electrical energy being transformed into mechanical energy?

• the blades of a fan turning after it has been plugged into an electrical outlet

• riding a bike after eating an apple

• wind blowing and causing the blades in a turbine to spin

• an electric toaster oven producing heat

Which device transforms electrical energy to mechanical energy?

• A

• B

• C

• D

What energy transformations are occurring in the picture?

• radiant energy > sound energy

• thermal energy > light energy

• electrical energy > chemical energy

• chemical energy > mechanical energy

What energy transformations are occurring in the picture?

• chemical > thermal > sound

• mechanical > thermal > sound

• chemical > mechanical > sound

• mechanical > sound > chemical

Other than sound energy, what type of energy is chemical energy mostly converted into in a lawnmower?

• electrical energy

• radiant energy

• mechanical energy

• nuclear energy

When an electric TV is plugged in and turned on, electrical energy is-

• created

• destroyed

• absorbed by the TV

• transformed to light and sound

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NGSS.MS-PS4-2

Potential energy is-

• stored energy

• never transformed

• energy of motion

• always the same

Tags

NGSS.MS-PS3-2

Kinetic energy is-

• never transformed

• always the same

• stored energy

• energy of motion

Tags

NGSS.MS-PS3-5

Where is potential energy the greatest?

• W

• X

• Y

• Z

Tags

NGSS.MS-PS3-2