Heat Transfer Flashcard

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What is a Physical Change?

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A Physical Change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include chopping wood or melting ice.

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What is a Chemical Change?

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A Chemical Change is a change that results in the formation of new chemical substances. It involves a change in the chemical properties and composition of the substance, such as burning wood.

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What is an Insulator?

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An Insulator is a material that does not transfer heat energy very well. Examples include plastic, wood, and cotton.

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What is a Conductor?

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A Conductor is a material that allows heat to pass through it easily. Metals like copper and aluminum are good conductors.

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How does heat transfer through Conduction?

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Conduction is the transfer of heat through direct contact between materials. Heat moves from the hotter object to the cooler one.

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How does heat transfer through Convection?

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Convection is the transfer of heat through the movement of fluids (liquids or gases). Hot fluid rises while cooler fluid sinks, creating a circulation pattern.

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How does heat transfer through Radiation?

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Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium, so it can occur in a vacuum, like the heat from the sun.

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What happens when you touch a hot stove?

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When you touch a hot stove, heat transfers from the hot stove to your cooler hand, causing a burn.

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What is the role of temperature in heat transfer?

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Temperature is a measure of the average kinetic energy of particles in a substance. Heat transfer occurs from areas of higher temperature to areas of lower temperature.

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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.