As Earth rotates, the point above the head of a person standing on the equator (the person's zenith) sweeps out
A) the celestial equator.
B) a variable path across the sky within the region of the zodiac, crossing the celestial equator at some point.
C) the ecliptic plane.
D) a great circle path between the North Pole and South Pole.

Question

Quizplus · Accepted Answer

The point above the head of a person standing on the equator (the person's zenith) sweeps out the celestial equator as Earth rotates. This is because the celestial equator is directly above the Earth's equator, and as the Earth rotates, the zenith point for someone on the equator would trace this path in the sky.

As Earth Rotates, the Point Above the Head of a Person