Multiple Choice
Why is hydrogen burning the main energy source for main-sequence stars?
A) Hydrogen is the most common element in stars.
B) Hydrogen nuclei have the smallest positive charge.
C) Hydrogen burning is the most efficient of all fusion or fission reactions.
D) Hydrogen can fuse at temperatures lower than other elements.
E) All the above are valid reasons.
Correct Answer:
Verified
Correct Answer:
Verified
Q55: The majority of the Sun's energy comes
Q65: The Sun's corona has a temperature of
Q66: The interior zones of the Sun are
Q67: If the Sun went through a period
Q68: The energy that fuels the Sun is
Q69: Density, temperature, and pressure increase as you
Q71: Why is hydrogen burning the main energy
Q72: Which of the following are created by
Q73: The fact that the surface of the
Q74: Through hydrogen fusion, the Sun loses approximately