| A | B |
|---|
| conduction | the transfer of energy that occurs when molecules bump one another |
| convection | transfer of heat by the flow of a heated material |
| nitrogen | the most common gas in the atmosphere |
| oxygen | makes up 21 percent of the atmosphere |
| ozone | a gas made up of three oxygen molecules bonded together that occurs naturally in the upper atmosphere |
| radiation | the transfer of energy by rays or waves |
| smog | a type of pollution |
| water vapor | makes up from zero to four percent of the atmosphere |
| Coriolis effect | changes direction of free moving fluids such as air and water |
| troposphere | layer of atmosphere closest to Earth's surface |
| sea breeze | a convection current created during the day |
| ionosphere | a layer of charged particles above Earth |
| jet stream | narrow belt of strong wind at high altitude |
| condensation | the process of water vapor changing to a liquid |
| hydrosphere | all the water on Earth's surface |
