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A Star's Life Study Guide

What is a nebula? When does a star's "life" begin? At what point do we call something a star? What element is being fused in a star? What are the stages of a stars life for low, medium and massive stars? What is the relationship between a stars mass and its how long it will live. Explain your answer. What is an H-R diagram? How is it useful to astronomers? What is the relationship between a star's temperature and its brightness? List the colors of stars from coolest to hottest. Be able to identify the different types of stars on an H-R diagram. What types of stars will supernova? What can happen after a supernova? What is a black hole? What is a neutron star? What is a pulsar?