Precession is the
A) occasional reversal in geological time of the direction of the spin axis of Earth.
B) motion of Earth along its orbital path.
C) daily rotational motion of Earth.
D) very slow coning motion of Earth's axis of rotation.

Question

Quizplus · Accepted Answer

Precession is the very slow coning motion of Earth's axis of rotation, which takes about 26,000 years to complete a single cycle. This phenomenon is due to the gravitational forces exerted by the Sun and the Moon on Earth's equatorial bulge.

Precession Is the