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Which type of energy transfer allows the Sun to warm the Earth?
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20. Heat and Temperature
Heat Transfer
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Which of the following lists correctly identifies the three primary mechanisms by which thermal energy is transferred between objects?
A
Convection, insulation, and evaporation
B
Conduction, reflection, and refraction
C
Radiation, absorption, and diffusion
D
Conduction, convection, and radiation
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Understand that thermal energy transfer occurs through three primary mechanisms: conduction, convection, and radiation.
Conduction is the transfer of heat through direct contact between molecules in a solid or between objects touching each other.
Convection involves the movement of fluid (liquid or gas) carrying heat from one place to another, often seen in air or water currents.
Radiation is the transfer of energy through electromagnetic waves, which can occur even through a vacuum without the need for a medium.
Recognize that other terms like insulation, evaporation, reflection, refraction, absorption, and diffusion are related to heat or energy processes but are not the primary mechanisms of thermal energy transfer.
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