Conservation of Energy and Energy Transfers

The diagram shows a cart moving freely along a track. What happens to the energy of the cart as it moves from point A to point B on the diagram?

• Potential energy is transformed to kinetic energy.

• Kinetic energy is transformed to potential energy.

• Both potential energy and kinetic energy stay the same.

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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 diagram models the position of a soccer ball when it has the greatest amount of gravitational potential energy?

• 
• 
• 

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What forms of energy are involved in hammering a nail into wood? Select all that apply

• Sound

• Kinetic

• Electrical

• Nuclear

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Which term describes the energy that is stored due to the height of an object above the ground?

• kinetic energy

• chemical energy

• mechanical energy

• gravitational potential energy

A nuclear power plant captures the energy created by the fission of the nuclei of uranium atoms and uses the generated energy to boil water. The boiled water creates steam that spins a series of turbines as it rises. As each turbine spins, it generates power that is sent into the power grid. Choose the correct sequence to fill in the blanks below. The uranium atoms contain __________ energy. The heat from their fission increases the __________ energy of the water. The spinning of the turbines is __________ energy that then generates __________ energy used in people’s homes.

• nuclear, thermal, kinetic, electrical

• nuclear, kinetic, thermal, electrical

• nuclear, electrical, thermal, kinetic

• nuclear, electrical, kinetic, thermal

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Which of these has kinetic energy?

• a book sitting on a shelf

• hat and gloves on a table

• cars parked in a parking lot

• a child kicking a soccer ball

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Which of these has elastic potential energy?

• a vase sitting on a shelf

• a stretched rubber band

• a child moving down a slide

• sugars stored in the molecules of food

Which of these best illustrates chemical potential energy?

• a dog playing fetch

• gasoline in a gas tank

• water moving down a hill

• a skydiver about to jump out of a plane

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A hockey player uses her stick to hit a hockey puck. Which statement describes the overall energy transfer?

• Energy is transferred from the stick to the puck.

• Energy is transferred from the player to the puck.

• Energy is transferred from the puck to the player.

• Energy is transferred from the stick to the player.

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