The second eight-level weather

Question 1:B?

Question 2:C

Question 3:B

Test analysis:

Question 1: According to the isobar diagram, combined with the knowledge learned, th

Question 1:B?

Question 2:C

Question 3:B

Test analysis:

Question 1: According to the isobar diagram, combined with the knowledge learned, the analysis shown in the following figure can be carried out. ⑤ The ground is the closed area isoline between 1028 hectopascals and 1032 hectopascals. If the closed contour value is equal to the large value of the two contours, its internal value is greater than the large value; If the value is equal to the small value in two isolines, its internal value should be less than the small value. ⑤ The ground is located in the high-pressure system, and it cannot be a small low-pressure center. Therefore, ⑤ The closed isoline takes a large value of 1032hPa, and the value range of the inner side of the area is 1032 HPA ~ 1036 HPA, so item B meets the requirements.

Question 2: The illustrated time is March 2, 20 13. North China is controlled by a high-pressure system, with high air pressure and fine weather. ① The south side of the ground is the low pressure center, and the wind blows from high pressure to low pressure. This place should be in the north. ①-②-③ The position change is: low-pressure edge-near low-pressure center-low-pressure edge, and the precipitation is controlled by low pressure, so its precipitation generally increases first and then decreases. ④ Located in Indochina Peninsula, it has a tropical monsoon climate, with southwest monsoon prevailing in summer and northeast monsoon prevailing in winter. Three months later, in June, the southwest monsoon prevailed.

Question 3: A few days after the indicated date, that is, no later than February1March, it is inferred that the direct point of the sun is in the southern hemisphere and moves northward. During this period, Sydney is away from the direct point of the sun day by day, and the height of the sun decreases slightly at noon. The speed of the earth's revolution to perihelion is getting slower every day. The direct point of the sun is in the southern hemisphere, and the day length in the northern hemisphere decreases with the increase of latitude. The day length in Beijing is shorter than that in Sansha City. The sun rises from the southeast and changes to the north with the daily northward movement of the direct point, so the angle of the shadow of the object to the northwest decreases at sunrise.