Thermal Energy

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What is thermal energy?

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Thermal energy is the total kinetic energy of the particles in a substance, which is related to its temperature.

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What are the three main methods of heat transfer?

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Conduction, Convection, and Radiation.

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What is conduction?

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Conduction is the transfer of heat through direct contact between materials.

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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) caused by differences in temperature.

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What is radiation?

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Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation.

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How does heat transfer occur in a microwave?

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Heat is transferred through radiation, as microwaves excite water molecules in food.

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What happens to heat when you touch a cold object?

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Heat flows from your warmer hand to the colder object.

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What is temperature a measure of?

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Temperature is a measure of the average kinetic energy of the particles in a substance.

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Why does metal feel colder than wood at the same temperature?

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Metal conducts heat away from your skin more efficiently than wood, making it feel colder.

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What is an example of convection in everyday life?

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Boiling water, where hot water rises and cooler water sinks.