(20 1 1? Ningde), complete the following questions. (1) The period of the earth's rotation is _ _ _ _ _, and the revolution direction is _ _ _ _ _. (2) When the earth rotates,

(1) The period of the earth's rotation is one day; The direction of revolution and rotation is from west to east;

(2) According to the diagram, when the earth revolves around B, the sun shines directly on the Tropic of Cancer, and the solar terms in the northern hemisphere are summer solstice;

(3) Ningde City belongs to Fujian Province. When the days are long and the nights are short in Ningde, the earth should move from point A to point C;

(4) When the earth is in D, it is winter in the northern hemisphere and summer in the southern hemisphere;

Combining the meaning of the question: it is impossible to watch the midnight sun at this time; When the northern hemisphere is in summer, there will be extreme daylight in the Arctic Circle, and only when the sun does not set will there be a "midnight sun".

So the answer is: (1) one day; From west to east; (2) Tropic of Cancer; Summer solstice; (3) a; c； (4) answer.