| A | B |
|---|
| weather | state of the atmosphere at a given time |
| temperature | measure of the amount of heat energy in the atmosphere |
| air pressure | weight of the air |
| low pressure area | an area where warm air rises and pushes down on the earth's surface with less pressure |
| high pressure area | an area where cold air sinks and pushes down on the earth's surface with more pressure |
| thermometer | a tool used to measure air temperature |
| barometer | a tool that measures air pressure |
| wind vane | a tool that shows wind direction |
| anemometer | a tool that measures wind speed |
| rain gauge | a tool that measures precipitation |
| precipitation | moisture that falls to the ground from clouds; Examples: rain, sleet, snow, hail |
| evaporation | the changing of a liquid to a gas |
| condensation | the changing of a gas to a liquid |
| humidity | the amount of water vapor in the air |
| hygrometer | a tool used to measure humisdity |
| meteorologist | a person who studies weather |
