If Earth's spin axis were perpendicular to the plane of its orbit (the ecliptic), seasonal variations on Earth would
A) be nonexistent.
B) remain the same as they are at present.
C) have the same severity, but each season would last twice as long.
D) be much more severe.

Question

Quizplus · Accepted Answer

Seasonal variations on Earth are primarily caused by the tilt of its axis relative to the plane of its orbit. If the axis were perpendicular, there would be no tilt to cause these variations, leading to a lack of seasons.

If Earth's Spin Axis Were Perpendicular to the Plane of Its