(10) Read the weather system map of a certain place and answer the questions. (1) From the point of view of airflow movement, the names of the two weather systems in the figure are _ _ at G.

(1)

(10) Read the weather system map of a certain place and answer the questions. (1) From the point of view of airflow movement, the names of the two weather systems in the figure are _ _ at G.

(1) anticyclone? A whirlwind? (2 points)

(2) North? Northwest wind? Southwest wind? (3 points)

(3) a? The isobars at A are dense and the horizontal pressure gradient is large (2 points).

(4) a? Ding? (2 points)

Test analysis:

(1) From the point of view of airflow movement, the names of the two weather systems in the figure are: anticyclone at G; Cyclone at D.

(2) According to the moving direction of the central plane in the figure, it moves counterclockwise, so the weather system is in the northern hemisphere, and the wind direction of A is northwest wind; The wind direction of B is southwest wind.

(3) Wind power depends on the density of isobar, so the wind power at point A is higher than that at point B; The reason is that the isobars at A are dense and the horizontal pressure gradient is large.

(4) The cold front precipitation is behind the front, and the warm front precipitation is before the front, so if cold and warm fronts causes precipitation, the rain areas are in A, B, C and D. ..

Comments:

Cold Front, Warm Front and Weather

?

cold front

warm front

Quasi-static front and weather

chart

?

sign

?

concept

The cold air mass actively moves to the warm air mass.

The warm air mass actively moves to the cold air mass.

Quasi-static front refers to a front with a small moving range.

Weather characteristics

Before crossing the border

Single air mass control, sunny day

Single air mass control, low temperature and sunny days

The cold and warm air masses are evenly matched, or blocked by the terrain, the front moves slowly, or swings in an area for a long time, resulting in rainy weather.

transit time

Cloudy day, rain and snow, strong wind, cooling down

Continuous precipitation

After crossing the border

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