Heat Transfer and Thermal Energy

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What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when heat energy is passed from one particle to another without the movement of the material as a whole.

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What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). It occurs when warmer, less dense areas of a fluid rise and cooler, denser areas sink, creating a circulation pattern.

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What is radiation?

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Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium to travel through, allowing heat to be transferred through empty space.

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What is heat transfer?

Back

Heat transfer is the process of thermal energy moving from one object or substance to another due to a temperature difference.

Front

How do particles behave when heat is added?

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When heat is added, particles gain energy and vibrate more rapidly, leading to an increase in temperature.

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What happens to air when it is heated?

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When air is heated, it expands and becomes less dense, causing it to rise.

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What is the role of temperature difference in heat transfer?

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A temperature difference is essential for heat transfer to occur; heat flows from areas of higher temperature to areas of lower temperature.

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What is an example of conduction in everyday life?

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An example of conduction is touching a hot stove; heat transfers from the stove to your hand.

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What is an example of convection in everyday life?

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An example of convection is boiling water; the hot water at the bottom rises while cooler water descends.

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What is an example of radiation in everyday life?

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An example of radiation is feeling the warmth of the sun on your skin, even when you are not in direct contact with it.