Conduction, Convection, & Radiation

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What is conduction?

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Conduction is the transfer of heat through direct contact between materials. It occurs when faster-moving particles collide with slower-moving ones, transferring energy.

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What is convection?

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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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How does heat transfer from a hot object to a cold object?

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Heat transfers from an area of high temperature to an area of low temperature.

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What is an example of conduction in everyday life?

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

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What is an example of convection in everyday life?

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An example of convection is the way warm air rises and cool air sinks in a room, creating a circulation of air.

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What is an example of radiation in everyday life?

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An example of radiation is feeling warmth from the sun on your skin, even when you are not in direct contact with it.

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What happens to the temperature of a substance when it absorbs heat?

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The temperature of the substance increases as it absorbs heat energy.

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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 like copper and aluminum.

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What is the role of a heat insulator?

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A heat insulator is a material that resists the transfer of heat, such as rubber, wood, or fiberglass.