The inclination of the axis of the earth varies from 22$\degree$ to 24$\degree$ degrees taking ____ to complete a cycle. This is a factor in the Milankovitch hypothesis of ice ages.
A) 24 hours
B) 1 year
C) 499 years
D) 41,000 years
E) Wrong! The Earth's axis tilt is fixed at exactly 23.50 with no variation whatsoever.

Question

Quizplus · Accepted Answer

The inclination of the axis of the earth varies from 22.1º to 24.5º over a period of approximately 41,000 years, which is known as a cycle. This variation in axis tilt is one of the factors that contribute to the Milankovitch hypothesis of ice ages. Therefore, the correct choice is D.

The Inclination of the Axis of the Earth Varies from 22