Question

A star is actually born when _____.

a) Nuclear fusion ends
b) Nuclear fission ends
c) Nuclear fusion begins
d) Nuclear fission begins

Answer 1

A star is actually born when nuclear fusion begins. This process releases a significant amount of energy, which is the source of energy in stars.

Step-by-step explanation:

The correct answer is c) Nuclear fusion begins.

A star is actually born when nuclear fusion begins. Nuclear fusion is a reaction in which two nuclei combine to form a larger nucleus. This process releases a significant amount of energy, which is the source of energy in stars.

For example, in stars like our sun, hydrogen nuclei combine to form helium nuclei through nuclear fusion. This fusion of light elements, mostly hydrogen, is what powers the release of energy in stars.