Which of the following measures time relative to the stars?
A)solar day
B)sidereal day
C)tropical year
D)synodic month

Question

Quizplus · Accepted Answer

The sidereal day measures the time it takes for the Earth to rotate once relative to the stars, specifically with respect to a distant fixed point in the sky. The solar day (A) measures the time it takes for the Earth to rotate once with respect to the position of the Sun, which varies slightly throughout the year due to the Earth's tilted axis and elliptical orbit. The tropical year (C) measures the time it takes for the Earth to complete one orbit around the Sun, based on the position of the Sun relative to the vernal equinox. The synodic month (D) measures the time it takes for the Moon to return to the same phase (e.g. full moon to full moon) relative to the Sun.

Which of the Following Measures Time Relative to the Stars