| Term | Definition |
|---|
| Barometer | any instrument that measures atmospheric pressure. |
| Anemometer | any instrument for measuring the speed of wind. |
| Cold Front | the zone separating two air masses, of which the cooler, denser mass is advancing and replacing the warmer. |
| Warm Front | a transition zone between a mass of warm air and the colder air it is replacing. |
| Occluded front | a composite front formed when a cold front overtakes a warm front and forces it aloft. |
| Stationary front | a front between warm and cold air masses that is moving very slowly or not at all. |
| thermometer | an instrument for measuring temperature, often a sealed glass tube that contains a column of liquid, as mercury, that expands and contracts, or rises and falls, with temperature changes, the temperature being read where the top of the column coincides with a calibrated scale marked on the tube or its frame. |
| wind vane | mechanical device attached to an elevated structure; rotates freely to show the direction of the wind |
| hygrometer | any instrument for measuring the water-vapor content of the atmosphere. |
Combine with other sets
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