Precession makes the spin axis of Earth move in a slow coning pattern. The end of the axis covers a complete circle in a period of
A) 2600 years.
B) 26 million years.
C) 26,000 years.
D) 1 year.

Question

Quizplus · Accepted Answer

Precession causes Earth's spin axis to trace out a conical shape in space, completing a full cycle approximately every 26,000 years. This is due to gravitational forces exerted by the Sun and the Moon on Earth's equatorial bulge.

Precession Makes the Spin Axis of Earth Move in a Slow