lesson 4

Question 1

air mass

Answer 1

a huge body of air that has the same temperature, humidity, and air pressure at any given height.

Question 2

four major types of air masses are

Answer 2

Maritime tropical Continental tropical, Maritime polar, continental polar

Question 3

jet streams

Answer 3

bands of high high-speed winds about 10 kilometer above earths surface

Question 4

front

Answer 4

boundary where unlike air masses meet but do not mix

Question 5

colliding air masses can form four types of fonts

Answer 5

cold fonts, warm fonts, stationary fonts, occluded fonts

Question 6

cold font

Answer 6

heavy rain or snow may fall

Question 7

warm font

Answer 7

rainy or cloudy with heavy rainfall

Question 8

occluded

Answer 8

cut off, as in a front where a warm air mass is caught between two cooler air masses

Question 9

stationary fonts

Answer 9

cold and warm fonts meet and do nothing to each other

Question 10

cyclone

Answer 10

swirling center of low air pressure that flows counter-clockwise

Question 11

cyclones and decreasing air pressure are associated with

Answer 11

clouds, wind, and precipitation

Question 12

anti-cyclone

Answer 12

high pressure centers of dry air that spins clockwise

Question 13

the descending air in an anticyclone generally causes

Answer 13

dry, clear weather