Read the Earth's orbit map and answer the following questions (1). Mark the names of solar terms represented by A, B, C and D on the map. A _ _ _ _ _ _ B _ _ _ _ C _ _ _ _ D _

(1) Look at the picture. A is the summer solstice, B is the autumnal equinox, C is the winter solstice, and D is the vernal equinox.

(2) When the earth revolves to a place, the sun shines directly on the Tropic of Cancer, the days in the northern hemisphere are long and the nights are short, and it is winter in the southern hemisphere;

(3) When the earth revolves to B, the sun shines directly on the equator, and the length of day and night in the northern hemisphere is equally divided.

(4) When the earth revolves to point C, the sun shines directly on the tropic of Capricorn, and the shadow of the object is the longest at noon, when the height of the sun is the smallest.

(5) 1 During the Labor Day in May, the earth was in the D-A section of its orbit, namely the vernal equinox and the summer solstice.

So the answer is:

(1) Summer solstice; Vernal equinox; Solstice of winter; Vernal equinox;

(2) Tropic of Cancer; The days are long and the nights are short; Winter;

(3) the equator; Divide day and night equally;

(4) Tropic of Capricorn; Dragon;

⑤D-a。