Heat Transfer- CCR Flashcard

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What is conduction in the context of heat transfer?

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Conduction is the process of heat transfer through direct contact between materials, where heat moves from the hotter object to the cooler one.

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How does convection work in heat transfer?

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

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What is radiation in terms of heat transfer?

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Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation, which can occur in a vacuum and does not require a medium.

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What is an example of conduction in everyday life?

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An example of conduction is when a metal spoon gets hot after being placed in a pot of boiling water.

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What is an example of convection in cooking?

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An example of convection in cooking is when hot water circulates in a pot, cooking pasta evenly as the hot water rises and cooler water sinks.

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What is an example of radiation that affects humans?

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An example of radiation that affects humans is the sun's rays causing sunburn.

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What factors affect the rate of heat transfer by conduction?

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The rate of heat transfer by conduction is affected by the temperature difference between objects, the material's thermal conductivity, and the surface area in contact.

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What role does density play in convection?

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In convection, density differences caused by temperature variations lead to the movement of fluid, with warmer, less dense fluid rising and cooler, denser fluid sinking.

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How does the specific heat capacity of a substance influence heat transfer?

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The specific heat capacity determines how much heat energy is required to raise the temperature of a substance, affecting how quickly it heats up or cools down.

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What is the significance of thermal equilibrium in heat transfer?

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Thermal equilibrium occurs when two objects reach the same temperature, resulting in no net heat transfer between them.