Urgent! ! Geographical problems

42 questions

D: You should know the following concepts.

1. Calculation method of noon sun altitude angle: h = 90°- latitude difference (latitude difference refers to the difference between the geographical latitude of a place and the latitude of the direct point of the day)

2. Inclination of the axis: The included angle between the earth axis and the orbital plane is always about 66.5 degrees, which causes the direct sunlight point to move back and forth between 23.5 degrees north and south latitude, and determines the possible direct sunlight range. (This question is ambiguous. 23.5 degrees should be 66.5 degrees instead of the inclination of the earth's axis. According to your question, we understand that when the inclination of the earth's axis is the same as that of Mars, the direct point of the sun will move back and forth between 25 degrees north and south latitude. (Automatically bring 25 degrees to 23.5 degrees)

3. When is the maximum height of the sun at noon in a year? Generally speaking, when the sun shines directly on the Tropic of Cancer in a year, it is the summer solstice solar term in northern China. At noon, the sun is directly above the head, that is, the height angle of the sun is 90, which is the maximum value in a year. Then if the sun's direct point moves between 25 degrees north and south latitude, it should be that the height angle of the sun reaches the maximum when the sun's direct point is at 25 degrees north latitude.

4. Latitude of Shanghai: about 3 1 degree north latitude (just remember it roughly).

5. Calculation: Back to the first concept, the latitude difference is changed from 3 1-23.5 to 3 1-25, the difference becomes smaller, and the 90 latitude difference becomes larger, that is, H (noon sun height angle) becomes larger.

E: The longest day is the summer solstice, that is, it is directly on the tropic of cancer. Now it's moving northward, and the daylight time is naturally longer.

There is nothing to explain in question 43. . July, summer in the northern hemisphere, winter in the southern hemisphere, and the rest can be solved by local geographical knowledge. . You must choose option A, South Africa is in the southern hemisphere. It was winter in the southern hemisphere at that time, and animals had to migrate to warm places. The equatorial region is the warmest, that is, in the north. . There is nothing to say about other options. . Knowing the northern and southern hemispheres, knowing which latitude, longitude and temperature zone you are talking about, is basically solved. .

The notebook is dead. . That's it. . Ask me if you have any questions. . Strengthen the foundation. .

I suddenly found that the adults in the back made it very clear. . I can explain. .