Question

question 7 (2 points)
what happens to the core in a sun - like star after all the hydrogen is used up?
o a it will collapse
o b it starts to expand
o c the core will start fusing carbon instead
o d the core explodes

Explanation:

When a sun - like star (a low - mass star) exhausts its hydrogen fuel in the core, the core can no longer support itself against gravity through hydrogen fusion. Gravity then causes the core to collapse. The outer layers of the star expand (the star becomes a red giant), but the core itself collapses. Carbon fusion does not occur in a sun - like star (it requires higher mass and temperature). And the core does not explode (a supernova explosion is for more massive stars).

Answer:

A. It will collapse