The MOST easily observed motions in the night sky are produced by the
A) rotation of Earth on its axis.
B) revolution of Earth around the Sun.
C) motion of the planets along their orbits around the Sun.
D) motion of stars with respect to each other in the sky.

Question

Quizplus · Accepted Answer

The rotation of Earth on its axis is the primary reason we observe daily movements in the night sky, such as the apparent movement of stars and constellations across the sky from east to west. This motion is the most easily observed because it happens over the course of a single night.

The MOST Easily Observed Motions in the Night Sky Are