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WW Learning Set 1
Weather Watch vocabulary
| Term | Definition |
|---|---|
| Temperature | a measure of the average movement of particles of matter |
| Relative Humidity | measure of the amount of water vapor in the air compared to the maximum possible amount that air can hold at a particular temperature |
| Precipitation | water that falls to the ground as rain, snow, hail, or sleet |
| Degrees Fahrenheit | a unit of measurement for temperature abbreviated as F |
| Degrees Celsius | a unit of measurement for temperature as C |
| Air Pressure | a measure of the force that air exerts on each square inch of a surface |
| Barometer | an instrument used to measure air pressure |
| Wind | the movement of air |
| Climate | the normal weather conditions of a region, throughout the year, averaged over a series of years |
| Rain Gauge | a tool used to measure precipitation |
| Liquid | matter that has a definite volume but not a definite shape; takes the shape of its container |
| Anemometer | an instrument used to measure wind speed |
| Wind Vane | a tool used for measuring wind direction |
| Climate Region | a region of the United States assigned to a NOAA Regional Climate Center |
| Front | the area where two air masses collide |
| Air Mass | a large volume of air with similar characteristics of temperature, air pressure, and humidity throughout |
| Warm Front | occurs when a particularly warm air mass meets a cooler air mass |
| Cold Front | occurs when a particularly cold air mass meets a warmer air mass |
| Occluded Front | occurs when a cold front catches up to a warm front and overtakes it |
| Stationary Front | when a cold front meets a warm front and no movement occurs |