Geographical title solar terms

Analysis: There is an extreme day in the northern Arctic Circle, and the solar term is the summer solstice in the northern hemisphere.

(2) Geographical coordinates of the direct point (23 26' N,120 W).

Analysis: From summer to the sun, the sun shines directly on the Tropic of Cancer at 4:00 Beijing time, and it can be found that 120 W is noon 12:00, which is the longitude of the sun's direct point.

(3) it is judged that the rotational linear velocities (A > B > C) of a, b > b > c are equal.

Analysis: The higher the latitude, the greater the rotation linear velocity and the equal rotation angular velocity except the poles.

(4) The day length at point C (4 hours) and the sunrise time at point B (3:00).

Analysis: As can be seen from the figure, the sunrise at point C is 10:00, and the duration of a day is 4 hours.

(5) Beijing time at this time (4:00).

(6) The latitude distribution law of the midday sun height (decreasing from the tropic of cancer to the north and south sides).

(7) There is a river from west to east at point C, and the river deflects (northeast).

Analysis: The deflection direction of southern hemisphere movement is to the left.

(8) Find the noon height of the sun at point A (66 34').

90 -|0 -23 26′|=66 34′

(9) the order of day and night is a, B>A>C C (B > A > C)

Analysis: the length of day B is 18 hours, that of day A is 12 hours, and that of day C is 4 hours.

(10) The order of noon sun height in a is B>A>C C (B > A > C).

Analysis: noon sun height B = 90-| 45-23 26' | = 68 26'

The noon sun height at C = 90-| 60-(-23 26') | = 6 34'

The noon sun height of A is 66 34'.