Thermal and Kinetic Energy

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter. It is the total kinetic energy of the particles in an object.

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What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion. The faster an object moves, the more kinetic energy it has.

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What is conduction?

Back

Conduction is the transfer of thermal energy through direct contact between materials. It occurs when heat moves from a hotter object to a cooler one.

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What is convection?

Back

Convection is the transfer of thermal energy through the movement of fluids (liquids and gases). It occurs when warmer parts of a fluid rise and cooler parts sink.

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What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves. It does not require a medium and can occur in a vacuum.

Front

What is a conductor?

Back

A conductor is a material that allows thermal energy or electricity to flow through it easily. Examples include metals like copper and aluminum.

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What is an insulator?

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An insulator is a material that slows down the transfer of thermal energy or electricity. Examples include rubber, glass, and wood.

Front

What happens to thermal energy when two objects at different temperatures come into contact?

Back

Thermal energy will transfer from the hotter object to the cooler object until they reach the same temperature.

Front

What is the role of temperature in thermal energy transfer?

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Temperature is a measure of the average kinetic energy of particles in a substance. Higher temperatures indicate more kinetic energy and greater thermal energy.

Front

How does heat transfer in a liquid?

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In a liquid, heat transfer occurs mainly through convection, where warmer, less dense liquid rises and cooler, denser liquid sinks.