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science ch11
vocab words
| Question | Answer |
|---|---|
| air mass | large body of air that has the same characteristice of tempeture and moisture content as the part of earths surface over which it formed. |
| blizzard | winter storm that lasts at least three hours with temperatures of -12degrees C or below, poor visibility and winds of atleast 51km/h |
| dew point | temperatures at which air is saturated and condensation forms |
| fog | a stratus cloud that forms when air is cooled to its dew point near the ground |
| front | boundary between two air masses with different temperatures, density or moisture;can be cold, warm, occluded, and stationary |
| humidity | amount of water vapor held in the air |
| hurricane | large, severe storms that forms over tropical oceans, has winds atleast 120/km/h, and loses power when it reaches land |
| isobar | is a line drawn to connect points of equal atmospheric pressure |
| isotherm | a line that connects points of equal temperature |
| meteorologist | studies weather and uses information from doppler radar, weather satellites computers and other instruments to make weather maps and provide forcasts |
| precipitation | water falling from clouds- including rain, snow, sleet, and hail whose form is determined by air temperature |
| relative humidity | is the measure of the amount of water vapor present in the air compared to the amount needed for saturation at a specific temperature |
| station model | indicates weather conditions at a specific location, using a combination of symbols on a map |
| weather | state of the atmosphere at a specific time and place, determined by factors including air pressure, amount of moisture in the air temperature and wind |
| tornado | violent whirling wind that crosses land in a narrow path and can result from wind shears inside a thunderhead |