Energy Physical Science (A)

The ___________energy of an object increases with its height.

• A. Chemical potential

• B. Kinetic

• C. thermal

• D. gravitational Potential

An object that has kinetic energy must be...

• A. lifted above the earth's surface

• B. in motion

• C. At rest

• D. construction of energy

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Conduction is the transfer of heat energy by....

• A. direct particle contact

• B. Electromagnetic Waves

• C. density differences

• D. movement through a vacuum

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An example of an energy conversion from kinetic to thermal energy would be...

• A. Friction

• B. Television

• C. Flower

• D. Gravity

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The Law of ___________ ____ ___________ states that energy in a system can change forms but can never be created or destroyed.

(a)  

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Green Plants convert light energy from the sun into (a)   during photosynthesis.

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The mechanical energy of a coconut falling form a tree

• A. doesn't exist

• B. Increase

• C. Decreases

• D. Remains Constant

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The kinetic energy of an object increases as its _______________ increases.

• A. height

• B. speed

• C. volume

• D. potential energy

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When a ball is dropped it bounces until it eventually stops. Why does this happen?

• A. Some of the ball's energy is lost

• B. Some of the ball's energy is converted to other forms, such as thermal and sound.

• C. All of the ball's energy is eventually converted to potential energy when the ball stops bouncing.

• D.All of the ball's energy is eventually converted to kinetic energy when the ball stops bouncing.

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How much force is required to lift a rock a vertical distance of 8m if 80J of work were done?

• A. 80 J

• B. 80 N

• C. 10 J

• D. 10 N

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