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What is Conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when two objects at different temperatures touch each other.

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What is Convection?

Back

Convection is the transfer of heat by the movement of fluids (liquids or gases). It occurs when warmer, less dense fluid rises and cooler, denser fluid sinks.

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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?

Back

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?

Back

An example of convection is the way hot air rises in a room, causing cooler air to move in and create a circulation.

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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 happens to the density of a fluid when it is heated?

Back

When a fluid is heated, it becomes less dense and tends to rise.

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What happens to the density of a fluid when it is cooled?

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When a fluid is cooled, it becomes more dense and tends to sink.

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How does a hot air balloon rise?

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A hot air balloon rises because the air inside the balloon is heated, becoming less dense than the cooler air outside.

Front

What is the primary method of heat transfer in liquids?

Back

The primary method of heat transfer in liquids is convection.