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Learning Objectives
Learning Objectives
Each statement represents the primary learning objective for the corresponding major heading within the chapter. After you complete the chapter, you should be able to:
Each statement represents the primary learning objective for the corresponding major heading within the chapter. After you complete the chapter, you should be able to:
16.1 Explain the criteria used to classify stars and define main-sequence star.
16.1 Explain the criteria used to classify stars and define main-sequence star.
16.2 List and describe the stages in the evolution of a typical Sun-like star.
16.2 List and describe the stages in the evolution of a typical Sun-like star.
16.3 Compare and contrast the final state of Sun-like stars to the remnants of the most massive stars.
16.3 Compare and contrast the final state of Sun-like stars to the remnants of the most massive stars.
16.4 List the three major types of galaxies. Explain the formation of large elliptical galaxies.
16.4 List the three major types of galaxies. Explain the formation of large elliptical galaxies.
16.5 Describe Edwin Hubble’s discoveries about the nature of the universe and summarize the Big Bang theory.
16.5 Describe Edwin Hubble’s discoveries about the nature of the universe and summarize the Big Bang theory.
Concept Checks
Concept Checks
16.1 Define absolute magnitude. How does the Sun compare in size and brightness to other main-sequence stars? Describe how the H-R diagram is used to determine which stars are “giants.”
16.2 Describe how main-sequence stars become giants. Why are less massive stars thought to age more slowly than more massive stars despite the fact they have much less “fuel”? List the steps thought to be involved in the evolution of Sun-like stars.
16.3 Explain how it is possible for the smallest white dwarfs to be the most massive. What is the final state of a medium-mass (Sun-like) star? How do the “lives” of the most massive stars end? What are the two possible products of this event?
16.4 Compare the three main types of galaxies. What type of galaxy is our Milky Way? Describe a possible scenario for the formation of a large elliptical galaxy.
16.5 Explain how Edwin Hubble used Cepheid variables to change our view of the structure of the universe. In your own words, explain how astronomers determined that the universe is expanding. Which view of the fate of the universe is currently favored: the Big Crunch or the Big Chill?
Links to Telescopes- Amazing Photo Galleries
Links to Telescopes- Amazing Photo Galleries
Los Campanas Observatory - Home to the Magellan Telescope and the Giant Magelan Telescope which is under construction
Los Campanas Observatory - Home to the Magellan Telescope and the Giant Magelan Telescope which is under construction
These PowerPoints are from my Introducing Physical Science class. They contains much of the same material as this chapter, but have some different photos and diagrams that enthusiasts of Astronomy might enjoy.
These PowerPoints are from my Introducing Physical Science class. They contains much of the same material as this chapter, but have some different photos and diagrams that enthusiasts of Astronomy might enjoy.
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