Energy & Energy 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 energy.

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What is energy transfer?

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Energy transfer is the process of energy moving from one object or system to another, often through conduction, convection, or radiation.

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What is conduction?

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Conduction is the transfer of heat through direct contact between materials. It occurs when faster-moving particles collide with slower-moving ones.

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What is convection?

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Convection is the transfer of heat through the movement of fluids (liquids or gases). It occurs when warmer, less dense fluid rises and cooler, denser fluid sinks.

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What is radiation?

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Radiation is the transfer of energy through electromagnetic waves. It does not require a medium and can occur in a vacuum.

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What is gravitational potential energy?

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Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, typically related to its height and mass.

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How does mass affect gravitational potential energy?

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The greater the mass of an object, the greater its gravitational potential energy when at the same height, as potential energy is directly proportional to mass.

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What is an example of conduction?

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An example of conduction is heating a kettle on a hot stove, where heat is transferred from the burner to the kettle through direct contact.

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What is an example of convection?

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An example of convection is boiling water, where hot water rises to the surface and cooler water sinks, creating a circular motion.

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What is an example of radiation?

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An example of radiation is warming up near a campfire, where heat is transferred through infrared radiation.