Energy Quiz 1 -- Intro, Kinetic & Potential

A ball is sitting at the top of a ramp. As the ball rolls down the ramp, the potential energy of the ball decreases. What happens to the potential energy as the ball moves?

• It is lost as gravitational energy.

• It is destroyed as the ball moves.

• It is converted to kinetic energy.

• It is used to make the ball slow down.

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A toy robot can walk and talk and runs on batteries. Which type of energy is stored in the batteries?

• nuclear

• chemical

• electrical

• mechanical

Which of these is an example of the conversion of kinetic energy into potential energy?

• a person walking up a hill

• a person parachuting out of an airplane

• a person skiing down a hill

• a car racing around an oval track

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The diagram shows a swinging pendulum. During every swing, the pendulum’s speed and position change. Three positions during the swing are identified as Position 1, Position 2, and Position 3.

At which point would most of the pendulum’s potential energy have been turned into kinetic energy?

• Position 1

• Position 2

• Position 3

• The potential and kinetic energies are equal in all positions.

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Which of these has kinetic energy?

• a book sitting on a shelf

• a child kicking a soccer ball

• hat and gloves on a table

• cars parked in a parking lot

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Which of these has the most kinetic energy?

• a 25 kg fish tank sitting on a table

• a 50 g fish swimming in a fish tank

• a 7,500 kg car parked on a steep hill

• a 50 kg boulder suspended from a cliff

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The diagram shows the curved path of a thrown ball.

At which point does the ball have the greatest amount of gravitational potential energy?

• Point W

• Point X

• Point Y

• Point Z

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Which change would increase the kinetic energy of a moving object the most?

• reducing the mass by half

• reducing the speed by half

• doubling the mass of the object

• doubling the speed of the object

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These vehicles are all moving at the same speed along a road. Which of these statements is correct?

• The motorcycle has the most kinetic energy because it is the vehicle with the least mass.

• All the vehicles have the same kinetic energy because they are all moving at the same speed.

• The delivery truck has the greatest kinetic energy because its mass is greater than that of the other vehicles.

• The delivery truck has the greatest kinetic energy because it has the most tires in contact with the pavement.

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Water stored in a reservoir is used to generate electricity as it flows down and into a river. The river flows to the ocean, where it evaporates to form clouds. Rain falls from the clouds into streams that flow into the reservoir.

Put the locations of the water in order of most potential energy to least potential energy. Assume the amount of water in each place is the same. These are the locations: 1. where it enters the river from the reservoir, 2. when it is in the ocean, 3. when it is in the reservoir, and 4. when it is in the clouds.

Explain your answer.

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