Energy Transfers

What is the unit of measurement for energy?

• Watts

• Hertz

• Joules

• Newtons

What happens when a system is in equilibrium?

• It moves rapidly

• Nothing changes

• It loses energy

• It gains mass

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What type of energy store is associated with height above the ground?

• Gravitational

• Kinetic

• Elastic

• Thermal

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How do we describe the energy transfer involving light or sound?

• By radiation

• Electrically

• By magnetism

• Mechanically

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What is the principle of conservation of energy?

• Energy is only transferred mechanically

• Energy diminishes over time

• Energy can be created

• Energy cannot be created or destroyed

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What happens to the total energy of the universe when energy transfers take place?

• It decreases

• It increases

• It disappears

• It remains constant

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Which energy store involves charged particles attracting or repelling?

• Magnetic

• Nuclear

• Chemical

• Electrostatic

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What type of energy transfer occurs when a force acts on an object?

• Radiation

• Heating

• Electrical working

• Mechanical working

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What type of energy is stored by objects that are stretched or compressed?

• Elastic potential

• Kinetic

• Gravitational

• Chemical

What is transferred from a hot coffee to cold hands?

• Energy

• Liquid

• Cold

• Heat only

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