Look at the picture and answer the following questions. (1) Mark the direction of the earth's revolution in the diagram. (2) Mark the names of solar terms represented by B, C and B in the picture: B _

Look at the picture and answer the following questions. (1) Mark the direction of the earth's revolution in the diagram. (2) Mark the names of solar terms represented by B, C and B in the picture: B _ _ _ _ _. (1) The direction of the earth's revolution is from west to east; (2) The earth revolves around B, and the sun shines directly on the equator, which is the autumn equinox in the northern hemisphere; The earth revolves around C, and the sun shines directly on the Tropic of Capricorn, which is the winter solstice in the northern hemisphere; (3) When the earth revolves to the place A, the direct latitude of the sun is the Tropic of Cancer. For most parts of the northern hemisphere, the height of the sun is the highest at noon, the longest during the day, and the ground gets the most heat. The northern hemisphere is in summer; (4) March, April and May are spring in the northern hemisphere, but the seasons in the southern hemisphere are the opposite. In September, 10, 1 1 autumn in the northern hemisphere and spring in the southern hemisphere.

So the answer is:

( 1)

(2) the autumn equinox; Solstice of winter; (3) Tropic of Cancer; Summer; (4) spring; Spring.