Read the map of the northern hemisphere near-surface weather system (hPa) and answer the following questions. (10) (1) According to the air pressure, ① is _ _ _

(1) high pressure and low pressur

Read the map of the northern hemisphere near-surface weather system (hPa) and answer the following questions. (10) (1) According to the air pressure, ① is _ _ _

(1) high pressure and low pressure

(2) Northwest (North)

(3) Cold front, cloudy day, precipitation, windy day and cooling weather (3 points for answering 3 questions correctly).

(4) See the figure below?

(1) Cyclone and anticyclone describe the airflow condition of weather system, while low pressure and high pressure describe the pressure condition of weather system. In fact, cyclone is a low-pressure system and anticyclone is a high-pressure system. ① refers to the high-pressure center, ③ refers to the low-pressure center.

(2) This question examines the formation of wind. The horizontal movement of the atmosphere is called wind, and the direct cause of wind is the horizontal pressure gradient force, which is perpendicular to the isobar and points to the low pressure. At high altitude, the wind direction is only affected by the horizontal pressure gradient force and geostrophic deflection force, and the wind direction is finally parallel to the isobar; Near the ground, the wind direction is also affected by friction, and the wind direction finally intersects the isobar. (2) The north wind blows on the ground.

(3) According to the picture: In the next few days, ⑤ the ground will experience a cold front crossing, and the weather during the cold front system crossing will be rainy and windy.

(4) The cyclone movement in the northern hemisphere is counterclockwise upward and converged towards the center.