Heat transfer-Conduction Convection Radiation

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What is conduction?

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Conduction is the transfer of heat through a material without the movement of the material itself. It occurs when two objects at different temperatures are in direct contact.

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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 parts of a fluid rise and cooler parts 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, which is why we can feel the heat from the sun.

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How does heat transfer occur when baking a cake in an oven?

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Heat transfer occurs through conduction (heat from the oven walls to the cake), convection (warm air circulating in the oven), and radiation (heat from the oven light or elements).

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What happens to an egg placed on hot pavement?

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The pavement conducts heat to the egg, warming it up.

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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 metal spoon that has been sitting in a pot of boiling water; the heat transfers from the spoon 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 to the top while cooler water sinks.

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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.

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What is the role of convection in weather patterns?

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Convection plays a key role in weather patterns by causing warm air to rise, leading to cloud formation and precipitation.

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How does a heat pack warm cold feet?

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A heat pack warms cold feet through conduction; the heat from the pack is transferred directly to the feet.