Conduction, Convection, Radiation

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What is 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 where heat is transferred through collisions between particles.

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NGSS.MS-PS3-3

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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, resulting in the circulation of the fluid.

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NGSS.MS-ESS2-6

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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 and does not require a medium.

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What are the three modes of heat transfer?

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

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How does conduction occur in metals?

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In metals, conduction occurs as free electrons move and collide with fixed atoms, transferring kinetic energy and thus heat.

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What is an example of convection in everyday life?

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An example of convection is the heating of water in a pot on a stove, where hot water rises and cooler water sinks, creating a circulation pattern.

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NGSS.MS-PS1-4

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How does radiation differ from conduction and convection?

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Radiation differs from conduction and convection as it does not require a medium to transfer heat; it can occur through empty space.

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What role does temperature play in conduction?

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In conduction, the rate of heat transfer increases with a greater temperature difference between two materials.

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NGSS.MS-PS3-4

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What is a thermal conductor?

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A thermal conductor is a material that allows heat to pass through it easily, such as metals like copper and aluminum.

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NGSS.MS-PS3-3

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What is a thermal insulator?

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A thermal insulator is a material that resists the transfer of heat, such as wood, plastic, or rubber.

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