Conduction, Convection, and Radiation Flashcard

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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, less dense fluid rises and cooler, denser fluid sinks, 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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Example of conduction in everyday life?

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

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Example of convection in everyday life?

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An example of convection is the way warm air rises from a heater and circulates around a room.

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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 hot air balloon rise?

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A hot air balloon rises due to convection. The air inside the balloon is heated, becoming less dense than the cooler air outside, causing it to rise.

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What happens to warm air near a fireplace?

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Warm air near a fireplace rises due to convection, creating a circulation of air that helps distribute heat throughout the room.

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What is the role of density in convection?

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In convection, warmer fluids are less dense and rise, while cooler fluids are denser and sink, creating a cycle of movement.

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How does an electric blanket warm you?

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An electric blanket warms you through conduction, as it directly transfers heat to your body when you come into contact with it.