| A | B |
| radiation | all forms of energy that travel through space as waves |
| conduction | when heat is transferred from one molecule to another by direct contact |
| convection | the transfer of heat through the movement of gases or liquids |
| Westerlies | these winds come from the west; the area that we live in |
| Trade Winds | the wind zones nearest the equator |
| doldrums | the narrow zone at the equator where the two trade wind systems meet |
| atmospheric pressure | ratio of the weight of the air to the area of the surface on which it presses |
| ionosphere | the lower region of the thermosphere; radio stations bounce radio waves off this |
| temperature | the property used to separate the atmosphere into its various layers |
| a barometer | used to measure the atmospheric pressure |
| the troposhere | the area of the atmosphere closest to the earth and where clouds form |
| greenhouse effect | the process in which the atmosphere traps warming solar rays at the earth's surface |
| radiation, conduction,convection | the three ways heat can be transferred within the atmosphere |
| a convection cell | a vertical looping pattern of air flow |
| a breeze | a gentle wind covering less than 100km |
| weather | the general condition of the atmosphere at a particular time and place |