Heat transfer-Conduction Convection Radiation

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What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when heat moves from a hotter object to a cooler one, like when a hot spoon touches ice cream.

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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 parts of a fluid rise and cooler parts sink, creating a cycle.

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What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium, so heat from the sun reaches us through radiation.

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How does a hot spoon help scoop ice cream?

Back

The warmth of the spoon is conducted to the ice cream, making it easier to scoop out.

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How does an iron smooth out wrinkles in clothes?

Back

An iron transfers heat to clothes through conduction, which helps to smooth out the wrinkles.

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What causes sunburn?

Back

Sunburn is caused by radiation from the sun, specifically ultraviolet (UV) rays.

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How does pasta cook in hot water?

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Pasta cooks in hot water through convection, as the hot water circulates around the pasta.

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What happens when you put your hand in a fire?

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Putting your hand in a fire involves heat transfer, but it is not conduction, convection, or radiation; it is direct contact with flames.

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What is an example of conduction in everyday life?

Back

An example of conduction is when you touch a hot stove and feel the heat transfer to your hand.

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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 air rises in an oven, cooking food evenly.