Multiple Choice
What is thought to be the physical mechanism that was responsible for the present mix of chemical elements in the universe?
A) All the known elements have been formed by the breakup (radioactivity) of the heavy elements formed in the initial Big Bang.
B) All the known elements were formed in the Big Bang.
C) Hydrogen and helium were formed in the Big Bang, whereas the heavier elements have been slowly forming by collisions in cold interstellar gas clouds.
D) Hydrogen and helium were formed in the Big Bang, whereas the heavier elements were made in the centers of stars.
Correct Answer:
Verified
Correct Answer:
Verified
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