Energy and Energy Transfer

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object has due to its motion. It depends on the mass of the object and its speed.

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How does mass affect kinetic energy?

Back

The greater the mass of an object moving at the same speed, the more kinetic energy it has.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state. For example, a ball at the top of a hill has potential energy.

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

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What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials.

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What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). For example, boiling water transfers heat through convection.

Front

What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves, such as light or heat from the sun.

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What happens to energy in a closed system?

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In a closed system, the total amount of energy remains constant; it can change forms but cannot be created or destroyed.

Front

What is an example of energy transfer?

Back

An example of energy transfer is when a moving car hits a stationary object, transferring kinetic energy to the object.

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What is thermal energy?

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Thermal energy is the total energy of all the particles in an object, related to its temperature.