Unit 2 (Energy and Energy transformation) Review

What occurs as the pendulum moves from its highest point to its lowest point?

• kinetic energy increase while potential energy stays the same

• Potential energy increases while kinetic energy stays the same

• Kinetic energy decreases and potential energy increases

• Potential energy decreases and kinetic energy increases

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Which will cause an increase in the mechanical energy of an object?

• decreasing its kinetic energy

• increasing its electrical energy

• increasing its potential energy

• decreasing its gravitational energy

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As the velocity of a runner increases, which type of energy also increases?

• _kinetic

• potenital

• electrical

• chemical

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Which size marble will have the greatest kinetic energy when it reaches the bottom of the ramp?

• 2g

• 15g

• 6g

• 8g

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A certain type of hybrid car utilizes a braking system in which energy is recovered and stored in batteries. This is an example of which type of energy conversion?

• kinetic energy converted to potential energy

• chemical energy converted to kinetic energy

• chemical energy converted to thermal energy

• thermal energy converted to potential energy

Which energy conversion happens when a person shivers and the energy is transferred to make the muscles and joints move?

• kinetic energy to potential energy

• heat energy to kinetic energy

• potential energy to chemical energy

• chemical energy to mechanical energy

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The sound made by crickets occurs when the male crickets rubs its two hind legs together. Which type of energy transformation results in the sound made by crickets?

• mechanical energy to sound energy

• thermal energy to chemical energy

• mechanical energy to chemical energy

• sound energy to thermal energy

Which best represents the use of mechanical energy?

• a candle providing light

• a rusty can

• a nail being hammered

• a light bulb giving off heat

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Which type of energy is changed by plants into chemical energy?

• solar

• nuclear

• chemical

• gravitational

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As a roller coaster car travels down a hill to speed up?

• potential energy changing into heat energy

• potential energy changing into kinetic energy

• kinetic energy changing into heat energy

• kinetic energy changing into potential energy

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