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weather tools
| Term | Definition |
|---|---|
| cumuls | puffy with flat bottoms and round tops that signal fair weather |
| cirrus | wispy,feathery clouds made of ice crystals that from 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 |