Direct equatorial solar terms

(1) The direction of the earth's revolution is from west to east;

(2) When the sun shines directly on the equator, its solar terms are autumnal equinox or vernal equinox;

On the summer solstice, the sun shines directly on the Tropic of Cancer. At this time, the sun is the highest at noon where our school is located, and the daytime is the longest in a year.

So the answer is: (1); (2) the autumn equinox; Vernal equinox; (3) Tropic of Cancer; High; Very long.