Question

what process is responsible for the sun’s production of energy?
○ nuclear fission of uranium atoms
○ chemical combustion of hydrogen
○ radioactive decay of heavy element
○ nuclear fusion of hydrogen into helium
our sun is approximately 4.6 billion years old and it’s estimated that the sun model, which of the following statements correctly shows how the proportion
○ the amounts of both hydrogen and helium will decrease over time.
○ the amount of helium will increase, and the amount of hydrogen will decrease over time.

Explanation:

For the first question: The Sun generates energy by fusing hydrogen nuclei into helium in its core, a process called nuclear fusion. Nuclear fission, chemical combustion, and heavy element decay do not power the Sun.
For the second question: As the Sun uses hydrogen for fusion, hydrogen is consumed (decreases) while helium, the product of fusion, accumulates (increases) over time.

Answer:

1. Nuclear fusion of hydrogen into helium
2. The amount of helium will increase, and the amount of hydrogen will decrease over time.