Multiple Choice
Why are elements heavier than iron less abundant than those that are lighter?
A) Because the duration of a supernova is relatively short
B) Because they tend to be unstable, and easily undergo fission
C) Spectral evidence suggests they are only rare here on Earth
D) This is one of the mysteries of cosmic formation that has yet to be answered.
Correct Answer:

Verified
Correct Answer:
Verified
Q5: Elliptical galaxies<br>A)tend to be smaller than the
Q41: Most of the atoms in the universe
Q47: Which best describes the intrinsic motion of
Q55: Which is greater, the gravitational attraction between
Q56: When a star collapses to half size,the
Q69: Most of the energy during the collapse
Q82: Metals are relatively more abundant in<br>A)old stars.<br>B)new
Q91: The H-R Diagram,an important tool of astronomers,relates
Q92: The North Star has very little apparent
Q98: The event horizon of a black hole