Each night,most stars:
A) remain stationary.
B) rise in the east and set in the west.
C) vary in brightness.
D) pass through the zenith.

Question

Quizplus · Accepted Answer

Most stars rise in the east and set in the west as a result of Earth's rotation along its axis. This is known as diurnal motion. Only the pole star (Polaris) appears to remain stationary in the sky while all other stars appear to move around it due to Earth's rotation. Stars do vary in brightness (C) but not necessarily each night and not all stars. Passing through the zenith (D) refers to a star's position directly overhead at a specific location on Earth and depends on latitude, time of day, and season, so it is not a characteristic of most stars.

Each Night,most Stars