Topic 4: Thermal Energy

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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 conduction?

Back

Conduction is the transfer of heat through direct contact between materials, where faster-moving particles collide with slower-moving ones.

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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 heat in the form of electromagnetic waves, such as infrared radiation, which can occur in a vacuum.

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What are thermal conductors?

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Thermal conductors are materials that allow heat to transfer easily, such as metals.

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What are thermal insulators?

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Thermal insulators are materials that do not allow heat to transfer easily, such as wood, plastic, or rubber.

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How does temperature affect particle movement?

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As temperature increases, the particles in a substance move faster, increasing the thermal energy.

Front

What happens to ice when it is placed in a warm environment?

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The ice absorbs heat from the surrounding environment, causing it to melt as the particles gain energy.

Front

What is the relationship between heat and energy?

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Heat is a form of energy that is transferred between objects due to a temperature difference.

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What is an example of conduction in everyday life?

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An example of conduction is when a metal spoon gets hot after being placed in a hot pot of soup.