Read the schematic diagram of the sun shining on the earth and answer the following questions: (1) This day is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Read the schematic diagram of the sun shining on the earth and answer the following questions: (1) This day is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ (1) There is an extreme day in the Arctic Circle and its northern region, which is the summer solstice in the northern hemisphere; The sun shines directly on the Tropic of Cancer.

② On the summer solstice, the equator is equally divided day and night; The rotation linear velocity decreases from the equator to the north and south sides; Except the north and south poles, the angular velocity is15/h.

(3) During the summer solstice, the height of the sun decreases from the Tropic of Cancer to the north and south sides at noon; The days are long and the nights are short in the northern hemisphere, and the equator is divided equally between day and night.

So the answer is:

Summer solstice? 23 degrees and 26 minutes north latitude

(2)B？ b？ ABC。

(3)CBA？ CBA。