Hejia weather

Question 1: northwest wind. The wind in A is stronger than that in B, the isobar is denser, and the horizontal pressure gradient force is greater.

Question 2: The wind will c

Question 1: northwest wind. The wind in A is stronger than that in B, the isobar is denser, and the horizontal pressure gradient force is greater.

Question 2: The wind will cool down, and there may be rain and snow.

Question 3: Low pressure or cyclone?

Question 4:

?

Weather system a in figure a

The weather system shown in Figure B.

Name of natural disaster

Cold wave (sandstorm)

typhoon

Impact on agriculture

Disadvantages: frostbite

Advantages: reduce pests.

Disadvantages: Flooding farmland.

Favorable: Relieve the drought.

Test analysis:

Question 1: Draw the wind direction at point A, first determine the horizontal pressure gradient force, which is perpendicular to the isobar and points from high pressure to low pressure. Combined with the geostrophic deflection of the northern hemisphere to the right, the final wind direction is northwest wind. The wind in A is stronger than that in B, the isobar is denser, and the horizontal pressure gradient force is greater.

Question 2: The weather system A in the picture is a cold front, and the impact of the cold front on Beijing is: strong winds cool down, and there may be rain and snow.

Question 3: Connect points with equal air pressure values to form a closed air pressure center, which is low air pressure or cyclone.

Question 4: The cold front develops strongly to form a cold wave, and the result of strong cyclone development is a typhoon.

?

Weather system a in figure a

The weather system shown in Figure B.

Name of natural disaster

Cold wave (sandstorm)

typhoon

Impact on agriculture

Disadvantages: frostbite

Advantages: reduce pests.

Disadvantages: Flooding farmland.

Favorable: Relieve the drought.

Test center:

Comments: This question is not difficult and requires students to have strong hands-on ability.