Energy

Front

What is energy?

Back

Energy is the ability to do work or cause change. It exists in various forms, such as kinetic, potential, thermal, and chemical.

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What is kinetic energy?

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Kinetic energy is the energy of an object in motion. It depends on the mass of the object and its velocity.

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What is potential energy?

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Potential energy is stored energy based on an object's position or state. For example, a raised object has gravitational potential energy.

Front

What is thermal energy?

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Thermal energy is the total kinetic energy of particles in a substance. It is related to temperature.

Front

How does temperature relate to molecular speed?

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Temperature is a measure of the average kinetic energy of the molecules in a substance. Higher temperatures mean faster-moving molecules.

Front

What happens to energy when ice melts?

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When ice melts, thermal energy is absorbed, causing the solid ice to change into liquid water.

Front

What is gravitational potential energy?

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Gravitational potential energy is the energy an object possesses due to its height above the ground. It increases with height.

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What is the principle of conservation of energy?

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The principle 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 an example of energy transformation?

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An example of energy transformation is a hand warmer, which transforms chemical energy into thermal energy.

Front

What is the relationship between height and gravitational potential energy?

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The higher an object is, the more gravitational potential energy it has.