The earth's axis is currently tilted relative to the plane of its orbit by
A) 1°.
B) 12.5°.
C) 23.5°.
D) an angle that varies with the seasons.

Question

Quizplus · Accepted Answer

The angle between the earth's axis and the plane of its orbit is known as the axial tilt or obliquity. Currently, this angle is approximately 23.5°, which is responsible for the different seasons on earth. This angle remains relatively constant, although it does oscillate slightly over long periods of time due to perturbations from other celestial bodies. Therefore, option C is the best choice.

The Earth's Axis Is Currently Tilted Relative to the Plane