| A | B |
| atmosphere | mixture of gases that surrounds earth |
| conduction | direct transfer of heat energy from one substance to another |
| convection | transfer of heat energy in a fluid(gas/liquid) |
| radiation | transfer of heat energy through empty space |
| greenhouse effect | CO2 & other gases absorb infared radiation from sun-heat blanket |
| thermometer | instrument used to measure temperature |
| air pressure | measure of force of air pressing down on Earth |
| barometer | instrument used to measure air pressure |
| sea breeze | flow of air from sea to land |
| land breeze | flow of air from land to sea |
| Coriolis effect | shift in wind direction caused by Earth's rotation |
| anemometer | instrument used to measure wind speed |
| evaporation | radiant energy from sun turns liquid into gas |
| relative humidity | % of moisture the air holds relative to a particular temperature |
| psychrometer | instrument used to measure relative humidity |
| precipitation | water that falls from atmosphere |
| examples of precipitation | sleet, hail, rain, snow |
| air mass | large body of air with uniform properties |
| front | boundary that forms when 2 air masses with different properties meet |
| isotherm | line on a weather map that connects places with same temperature |
| isobar | line on a weather map connects places with same air pressure |
| condensation | water vapor turns into a liquid |
| water cycle | processes of evaporation, condensation, precipitation,runoff, and subsurface flow |