For the following two questions, consider the life of a star.

Outline the life of a medium star. A simple outline of the stages is sufficient. You don't need to include a description of the stages until the next question.

Describe the major source of energy in each stage of the star's life and the underlying forces responsible for each event in the different stages. Be sure to indicate the role of gravity, the electromagnetic force, and the strong force, if they are important in a particular stage.