Law of Conservation of Energy

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What is the Law of Conservation of Energy?

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The Law of Conservation of Energy states that energy cannot be created or destroyed, only transformed from one form to another.

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What is conduction?

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Conduction is the transfer of heat through direct contact between materials.

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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.

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What is radiation?

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Radiation is the transfer of energy through electromagnetic waves, such as light or heat from the sun.

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Give an example of conduction.

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Touching a warm mug of hot chocolate is an example of conduction.

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Give an example of convection.

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Currents in water, such as boiling water, are an example of convection.

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Give an example of radiation.

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Feeling warmth from the sun or a heat lamp is an example of radiation.

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How does the sun warm the Earth?

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The sun warms the Earth through radiation.

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What happens to energy in a closed system?

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In a closed system, the total energy remains constant; it can change forms but is not lost.

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What is thermal energy?

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

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