Chapter 16

2. - line drawn on a weather map that connects two places with the same atmospheric pressure
4. amount of water vapor held in the air
5. - severe winter storm with freezing cold temperatures, blowing snow, all this causes poor visibility that lasts at least 3 hours
6. - line drawn on a weather map that connects locations with the same temperature
9. - person who studies the weather
10. model - indicates weather conditions at a specific location by using symbols on a map
11. state of the atmosphere at a specific time and place
13. - boundary between two air masses with different temperature, density, or moisture
14. mass- large body of air that has the same characteristics of temperature and moisture content as the area where it formed
15. - stratus clouds that form when air near the ground is cooled to its dew point

1. - water falling from clouds in many forms determining on the temperature
3. large severe storm that forms over tropical oceans and has winds of at least 119 miles per hour
7. humidity- measure of the amount of moisture held in the air compared with the amount it can hold at a given temperature
8. point - temperature at which air is saturated and condensation forms
12. - violently turning column of air in contact with the ground