Energy Transfers (Heat) Photos

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What is conduction?

Back

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?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). It occurs when warmer areas of a liquid or gas rise and cooler areas sink, creating a current.

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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, meaning it can occur in a vacuum.

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Example of conduction in everyday life?

Back

A spoon getting hot when placed in a cup of hot soup.

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Example of convection in everyday life?

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Warm air rising from a heater and cool air sinking, creating a current.

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Example of radiation in everyday life?

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Feeling the warmth of the sun on your skin.

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What happens to air when it is heated?

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When air is heated, it becomes less dense and rises, while cooler air sinks.

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What is the role of a heat conductor?

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A heat conductor is a material that allows heat to pass through it easily, such as metals.

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What is the role of an insulator?

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An insulator is a material that does not allow heat to pass through it easily, such as wood or plastic.

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How does a lava lamp demonstrate convection?

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In a lava lamp, the wax is heated, becomes less dense, rises, cools down, becomes denser, and sinks, creating a cycle.