Question

1 multiple choice 1 point what is the heaviest element produced by a star before it explodes? iron copper helium uranium 2 multiple choice 1 point scientists believe that _ billion years ago, the universe was concentrated in a singularity. 10 12 14 16 3 multiple choice 1 point the light of a star that is moving away from planet earth is said to have a(n) ____ shift ground red blue excited

Explanation:

1. Nuclear fusion in stars stops at iron.
2. Current estimate is about 14 billion years for the Big - Bang.
3. Stars moving away have red - shift.

Answer:

1. A. iron
2. C. 14
3. B. red