Energy

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What is energy?

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

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What is kinetic energy?

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Kinetic energy is the energy of an object in motion. The faster an object moves, the more kinetic energy it has.

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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 ball held at a height has gravitational potential energy.

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What is thermal energy?

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Thermal energy is the energy that comes from the temperature of matter. It is the total kinetic energy of particles in an object.

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What is mechanical energy?

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Mechanical energy is the sum of potential and kinetic energy in an object that is used to do work.

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What is light energy?

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Light energy is a form of energy that is visible to the human eye. It is produced by sources like the sun, light bulbs, and fire.

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What is electrical energy?

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Electrical energy is the energy of moving electrons. It powers devices like lights, computers, and appliances.

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What is an example of energy transfer?

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When you rub your hands together, mechanical energy from the motion is converted into thermal energy, making your hands warm.

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What is an example of a source of thermal energy?

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Examples of thermal energy sources include fireplaces, stoves, and the sun.

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What is an example of mechanical energy?

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A moving car, a running lawn mower, and a swinging hammer are all examples of mechanical energy.