The formation of stars. Learning Objective: How do stars form?. The formation of stars. All of you will describe the basic steps in star formation Most of you will explain how mass relates to star structure
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Here are two ways to thinking about when a protostar when it gets hot enough for fusion to start
a Describe the energy changes that are going on.
b Now imagine the same scene, but in reverse. How is this similar to the formation of a protostar? How does it differ?
4. Suggest reasons why a cold cloud of gas is more likely to contract than a hot one.
The photosphere has a granular appearance, which is continually changing. Something is going on under the surface
Physicist can use these ideas to develop models of the inside of a star.
5. Why does hydrogen fusion take place only in the core of a main-sequence star?
6. On a sketch copy of an H–R diagram, label the ends of the main sequence to show the most massive and the least massive stars.