Assume all else is unchanged, and the Earth's rotational axis is perpendicular to the ecliptic. As a result, seasonal variations on the Earth would
A)be practically non-existent.
B)remain the same as they are at now.
C)have the same severity but each season would last twice as long.
D)be much more severe.

Question

Quizplus · Accepted Answer

Seasonal variations are caused by the tilt of the Earth's rotational axis relative to its orbit around the Sun. If the axis was perpendicular to the ecliptic, there would be no tilt and therefore no seasonal variations.

Assume All Else Is Unchanged, and the Earth's Rotational Axis