Author Question: Which of the following is not a real difference between asteroids and comets? A) Asteroids orbit ... (Read 60 times)

madam-professor · **on:** Jul 27, 2018

Which of the following is not a real difference between asteroids and comets?

A) Asteroids orbit the Sun while comets just float randomly around in the Oort cloud.
B) Most asteroids are located much nearer to the Sun than most comets.
C) It is thought that comets are far more numerous than asteroids.
D) Asteroids are made mostly of rock and comets are made mostly of ice.

Question 2

On which of these assumptions do Ptolemy and Copernicus agree?

A) The Earth must be the center of all motion in the Cosmos.
B) All orbits must be perfect circles.
C) The Sun was bigger than the Earth.
D) Venus must always stay between us and the Sun.
E) The Sun must orbit us, but the planets do orbit the Sun.