| A | B |
| weather | the condition outside at any given time |
| annemometer | instrument used to measure wind speed |
| wind vane | tool used to tell wind direction |
| rain guage | tool used to measure precipitation |
| thermometer | tool used to measure temperature |
| climate | the pattern of the weather in a given area year after year |
| evaporation | the process of a liquid changing to a gas |
| condensation | the process of a gas changing to a liquid |
| precipitation | any form of water falling as rain, snow, sleet or hail |
| accumulation | the collection of water |
| meteorologist | a person who studies the weather |
| meteorology | the study of the weather |
| wind | moving air |
| trophosphere | the layer of air where weather happens |
| atmosphere | the air surrounding the earth |
| water cycle | the process of water moving to the sky and back to earth |
| water vapor | the amout of water in the air |
| temperature | the measurement of thermal energy |
| humidity | the amout of water vapor in the air |
| hygrometer | tool used to measure humidity |