Star's Life Cycle Quiz

• A star's life cycle is divided into three stages: the pre-main sequence, the main sequence, and the post-main sequence.
• The pre-main sequence is a time when the star is fusing hydrogen into helium.
• The main sequence is a time when the star is using up its hydrogen and helium supplies and the star is becoming more and more massive.
• The post-main sequence is a time when the star is no longer using up its hydrogen and helium supplies and the star is gradually collapsing in on itself.
• The end of a star's life is marked by the point at which the fusion of hydrogen into helium ceases.
• At this point, the star's mass and temperature become too high for this fusion to take place and the star begins to collapse.
• The outer layers of the star are blown away, leaving the star's core behind. This core is incredibly hot and dense, and is known as a white dwarf.
• The star's mass and temperature become too low for it to generate any more energy and it eventually collapses into a tiny, white, dwarf-like object.

Test your knowledge of a star's life cycle with this quiz. Explore the pre-main sequence, main sequence, and post-main sequence stages, and learn about the formation of white dwarfs.