2. Chapter 2 Section 1

3.  The sun provides nearly all of the energy which powers the atmosphere.  That energy comes to us in the form of electromagnetic radiation.

7.  About 50% of energy is absorbed by the surface. The absorbed energy is then reradiated back into the atmosphere.  This energy is then absorbed by greenhouse gases and reradiated again, thus maintaining the Earth’s warmth.

8.  Greenhouse gases trap heat in the atmosphere keeping it warm.  If there’s too much of such gas in the atmosphere the temperature will rise.

10.  Energy flows from a warm object to a cool object. Heat

13.  The transfer of heat as light energy. Radiation can travel through empty space, from the Sun to the Earth. Radiation

14. Radiation

15.  The transfer of heat from one object to another by physical contact. Conduction

16. Conduction

17.  The transfer of heat by the movement of large numbers of particles within a liquid or gas. Convection

18. Convection