Multiple Choice
Observations vs. Explanations. Which of the following statements is an explanation?
A) The farther a galaxy is, the faster it is moving away from us.
B) The inner planets of the solar system are rocky and the outer planets are gas giants.
C) The orderly orbits of planets arose from their formation in a rotating cloud of gas.
D) Hydrogen and helium are important constituents of stars.
E) All planets orbit the Sun in the same direction and nearly the same plane.
Correct Answer:

Verified
Correct Answer:
Verified
Q12: Most of the planets discovered around other
Q51: The more massive planets in the solar
Q52: The region of our solar system between
Q156: Imagine that an alien spaceship crashed onto
Q157: According to our theory of solar system
Q158: Why did the solar nebula flatten into
Q161: What do we mean by the period
Q162: Which of the following discoveries would cause
Q163: How do scientists determine the age of
Q164: What do we mean by accretion in