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weather tools/clouds
| Term | Definition |
|---|---|
| Cumulus | Puffy with flat bottoms and round tops that signal fair weather |
| cirrus | Wispy,feathery clouds made of ice crystals that form at high levels |
| stratus | clouds that form in flat layers and often cover much of the sky |
| nimbus | a rain cloud |
| fog | a stratus cloud that forms when air is cooled to its dew point near the ground |
| Anemometer | An instrument used to measure wind speed |
| Wind vane | Instrument used to measure wind direction |
| Thermometer | An instrument used to measure temperature |
| Sling Psychrometer | tool made of a wet and dry thermometer that measures relative humidity and requires a table to interpret the two temperatures |
| Barometer | An instrument that measures atmospheric pressure |
| Rain Guage | an instrument used to measure precipitation |
| weather map | a map that uses symbols to show weather data |
| Weather satellites | type of satellite that is primarily used to monitor the weather and climate of the earth |
| weather radar | is an instrument that sends pulses of electromagnetic energy into the atmosphere to find precipitation ,determine its motion and intensity, and identify the precipitation type such as rain |
| isobar | line on map connecting points having same barometric reading at given time |
| isotherm | a line on weather map that joins places that have the same temperature |
| cumulonimbus | are thunderstorm clouds.High winds can flatten the top of the cloud into an anvil-like shape.Cumulonimbus clouds are associated with heavy rain, snow,hail, lightning and even tornadoes.The anvil usually points in the direction the storm is moving |
| Relative Humidity | The amount of water vapor in the air at any given time is usually less that that required to saturate the air.Expressed as percentage. |