Earth science 17.2

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Earth science 17.2

  1. 1. 17.2 Heating the Atmosphere <br />
  2. 2. Heat <br />Thermal energy transferred from one object to another.<br />
  3. 3. Temperature<br />A measure of the average kinetic energy of individual atoms or molecules in a substance.<br />
  4. 4. Conduction <br />The transfer of heat through matter by molecular activity; Energy is transferred through collisions from one molecule to another.<br />
  5. 5. Convection<br />The transfer of heat by the movement of a mass or substance; It can take place only in fluids.<br />
  6. 6. Radiation<br />The transfer of energy (heat) through space by electromagnetic waves.<br />
  7. 7. Reflection<br />The process whereby light bounces back from an object at the same angle at which it encounters a surface and with the same intensity.<br />
  8. 8. Scattering <br />The redirecting (in all directions) of light by small particles and gas molecules in the atmosphere; The result is more light rays with weaker intensity.<br />
  9. 9. Greenhouse Effect<br />The heating of Earth’s surface and atmosphere from solar radiation being absorbed and emitted by the atmosphere, mainly by water vapor and carbon dioxide. <br />
  10. 10. Key Concept<br />How are heat and temperature related? <br />Heat is transferred from one object to another because of a difference in their temperatures.<br />
  11. 11. Key Concept<br />What are the three major mechanisms of heat transfer?<br />Three mechanisms of energy transfer as heat are conduction, convection, and radiation. <br />

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