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 through physical touch.

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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 circulation pattern.

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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 to travel through, meaning it can occur in a vacuum.

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Example of conduction in everyday life?

Back

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

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Example of convection in everyday life?

Back

An example of convection is when you boil water in a pot, and the hot water rises to the top while cooler water sinks.

Front

Example of radiation in everyday life?

Back

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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How does a microwave heat food?

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A microwave heats food primarily through radiation, using electromagnetic waves to excite water molecules in the food.

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What happens to the handle of a metal spoon in hot soup?

Back

The handle of a metal spoon warms up due to conduction, as heat transfers from the hot soup to the spoon.

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What is the role of air in convection?

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Air acts as a fluid in convection, allowing warm air to rise and cool air to sink, creating a cycle that transfers heat.

Front

Why does a hair dryer use convection?

Back

A hair dryer uses convection to blow warm air over wet hair, helping to evaporate moisture and dry the hair.