Energy: Forms and transfer

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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, 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, an object held at a height has gravitational potential energy.

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What is elastic potential energy?

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Elastic potential energy is the energy stored in elastic materials as the result of their stretching or compressing.

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What is the law of conservation of energy?

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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 an energy transformation?

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An energy transformation occurs when energy changes from one form to another, such as when potential energy is converted to kinetic energy.

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What type of energy is used in cooking food in an oven?

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Heat energy is used to cook food in an oven.

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What is thermal energy?

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Thermal energy is the total kinetic energy of particles in a substance, which determines its temperature.

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What is nuclear fusion?

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Nuclear fusion is a process where two atomic nuclei combine to form a heavier nucleus, releasing energy, as seen in stars.

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What is mechanical energy?

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