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Unit 3: Weather
| Term | Definition |
|---|---|
| weather | the condition of the atmosphere at a certain place and time |
| temperature | measure of how hot or cold the air is |
| thermometer | a tool used to measure temperature |
| humidity | amount of water vapor in the air |
| wind | air in motion |
| During the DAY, the sand is ___ and the water is ___. | hot, cool |
| During the NIGHT, the sand is ___ and the water is ___. | cool, warm |
| types of breezes | land breeze and sea breeze |
| air pressure | the force of the weight of air |
| high air pressure | when the air sinks and the weather is sunny and clear |
| low air pressure | when the air rises and the weather is cloudy and stormy |
| evaporation | changing of water into vapor (gas) |
| condensation | when water vapor turns into droplets in the clouds |
| precipitation | when water falls as rain, snow, or hail |
| collection | when rain water collects in rivers, lakes, and oceans |
| air mass | large areas of air that have the same characteristics |
| front | where air masses meet |
| warm front | warm air pushes cold air and brings drizzly rain and then clear weather |
| cold front | cold air pushes warm and and brings cooler weather |