Read the schematic diagram of the earth's revolution and complete the following questions: 1) Write the names of the four solar terms in the diagram, A _ _ _ _ _ _B _ _ _ _ _ _c _ _ _ _ _ _ _ _； _ _ _

Read the schematic diagram of the earth's revolution and complete the following questions: 1) Write the names of the four solar terms in the diagram, A _ _ _ _ _ _B _ _ _ _ _ _c _ _ _ _ _ _ _ _； _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ D _ _ _ _ 2) Revolution Reading the picture shows that the names of the four solar terms (1) in the picture are winter solstice A, summer solstice B, vernal equinox C and autumn equinox D respectively; (2) As can be seen from the figure, when the earth revolves to place A, the sun shines directly on the Tropic of Cancer, which is the winter solstice in the northern hemisphere, and when the earth revolves to place B, the sun shines directly on the Tropic of Cancer (23.5 N), which is the summer solstice in the northern hemisphere; (3) The revolution of the earth to point D is around September 23rd every year, so September 1 is the closest to point D in the revolution diagram; (4) When the earth revolves to point A, the sun shines directly on the Tropic of Capricorn, and it is winter in the northern hemisphere, and the climate in most areas is cold; (5) Henan is located in the northern hemisphere, the earth revolves to point B, the sun shines directly on the Tropic of Cancer, and the daytime in the northern hemisphere is the longest.

Therefore, the answer is: (1) winter solstice; Summer solstice; Vernal equinox; Autumnal equinox;

(2) Tropic of Capricorn; Tropic of Cancer; 23.5N；

(3)D； (4) a; (5)B。