Heat and Heat Transfer

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What is thermal energy?

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Thermal energy is the total energy of all the particles in an object, which depends on the temperature and the number of particles.

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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.

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Conduction is the transfer of heat through a material without the movement of the material itself, typically occurring in solids.

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Define 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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Define radiation.

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Radiation is the transfer of heat in the form of electromagnetic waves, which can occur in a vacuum.

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What is specific heat?

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Specific heat is the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.

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How does temperature affect thermal energy?

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As the temperature of an object increases, its thermal energy also increases because the particles move faster.

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What happens to air when it is heated?

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When air is heated, it expands, becomes less dense, and rises.

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What is an example of heat transfer by conduction?

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An example of conduction is a metal spoon getting hot when placed in a pot of boiling water.

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What is an example of heat transfer by convection?

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An example of convection is warm air rising from a heater and circulating throughout a room.