When viewed from Earth,the apparent angular diameter of Jupiter varies with time because
A) the distance between Jupiter and Earth varies.
B) of tidal influence of the four massive moons of Jupiter.
C) the fluid planet pulsates with a long natural oscillation period.
D) Jupiter's gaseous atmosphere expands and contracts as the strength of sunlight varies because of the planet's elliptical orbit.

Question

Quizplus · Accepted Answer

The apparent angular diameter of Jupiter varies with time because the distance between Jupiter and Earth varies due to their elliptical orbits around the Sun. When Jupiter is closest to Earth, its apparent angular diameter appears larger, and when it is farthest from Earth, its apparent angular diameter appears smaller.

When Viewed from Earth,the Apparent Angular Diameter of Jupiter Varies