Thermal Energy & Heat Transfer

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What is thermal energy?

Back

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

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What is heat transfer?

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Heat transfer is the movement of thermal energy from one object or substance to another due to a temperature difference.

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What is conduction?

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Conduction is the process of heat transfer through direct contact between materials, where faster-moving particles transfer energy to slower-moving particles.

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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 and density.

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What is radiation?

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Radiation is the transfer of energy through electromagnetic waves, such as light or infrared radiation, without the need for a medium.

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What is the difference between kinetic energy and potential energy?

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Kinetic energy is the energy of motion, while potential energy is stored energy based on an object's position or state.

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What is sublimation?

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Sublimation is the process in which a solid changes directly into a gas without passing through the liquid state.

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What is the phase change from liquid to gas called?

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The phase change from liquid to gas is called evaporation.

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What is the phase change from gas to liquid called?

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The phase change from gas to liquid is called condensation.

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What happens to particles during heating?

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When a substance is heated, its particles gain kinetic energy, move faster, and may spread apart, leading to a change in state.