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What is thermal energy?

Back

Thermal energy is the total kinetic energy of the particles in a substance. It is related to temperature and the amount of substance.

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What happens to the temperature of an object when it gains thermal energy?

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When an object gains thermal energy, its temperature increases as the kinetic energy of its particles increases.

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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 are the three methods of heat transfer?

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The three methods of heat transfer are conduction, convection, and radiation.

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Define conduction.

Back

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

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Define convection.

Back

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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Define radiation.

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Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation, without the need for a medium.

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What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact with each other reach the same temperature, resulting in no net heat transfer.

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How does temperature affect molecular motion?

Back

As temperature increases, the motion of molecules increases, leading to higher kinetic energy.

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What is kinetic energy?

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Kinetic energy is the energy of an object due to its motion, which increases with the speed of the object.

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