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Unit 3 Lesson 2

QuestionAnswer
What is high pressure? large body of circulating air with high pressure at its center and lower pressure outside
What is low pressure? large body of circulating air with low pressure at its center and higher pressure outside
What way do high and low pressure move? Clockwise and counterclockwise
What are air masses? large bodies of air that have uniform temperature, humidity, and pressure
What is an arctic air mass? Contain bitterly cold, dry air. Bring temperature down to -40'C
What are continental polar air masses? They are fast-moving. They bring cold temperatures in the winter and cool temperatures in the summer.
What are maritime polar air masses? Cold, humid. Form over the northern Atlantic and Pacific Oceans. Includes cloudy and rainy weather.
What are continental tropical air masses? Hot, dry. Form over dry, desert land. Clear skies and high temperatures. Usually form during the summer
What are maritime tropical air masses? Form over western Atlantic Ocean. They bring hot, humid air to the southeastern US during the summer. In winter, they bring heavy snow
What are cold fronts? When a colder air mass moves toward a warmer air mass. Clouds form. Showers and thunderstorms.
What are fronts? A weather front is a boundary between two air masses. Air masses with different characteristics can collide
What are warm fronts? It forms when less dense, warmer air moves toward colder, denser air. These clouds often bring steady rain or snow for several hours or even days
What are stationary fronts? Warm air will be on one side and cold air will be on the other side.
What are occuluded fronts? Sometimes a fast-moving cold front catches up with a slow-moving warm front
Created by: Rhyanh
 

 



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