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Name:________________________________________ Chapter 30 Review Guide// ESS 1. List 3 ways that stars are different from each other. 2. What is the relationship of color to a star’s surface temperature? 3. How do astronomers determine a star’s composition and temperature? 4. What are the two types of stellar motion? a. What causes the stars to “move” westward across the night sky? b. Why do we see different stars at different times of the year? c. What are three ways a star can actually move on its own? d. Why do stars appear to be fixed & motionless in a constellation? 5. What are circumpolar stars 6. Define the term “light year.” 7. What is the difference between “apparent magnitude” and “absolute magnitude?” 8. Which star appears brighter to us…a +10 or a -4? 9. Draw a word diagram that shows the life cycle of a sun sized star and a massive star. Label all the stars & stages 10. Name the type of reaction (and the elements involved) that occurs in main sequence stars. 11. Why does a main sequence star stay in equilibrium? 12. What are the differences between a nova & a supernova? 13. Draw the diagram that astronomers use to classify stars. Include the title, label both axes, and include the four main classifications of stars in their proper positions on the diagram. (HR Diagram, Magnitude, Temperature, Dim, Bright, Hot, Cold, White Dwarf, Main Sequence, Giant,SuperGiant) 14. Study these constellations & their stars: Orion (Betelguese), Ursa Minor (Polaris), Canis Major (Sirius). 15. What is the Right Ascension (Hours and minutes) & Declination (degrees + or -) of the star Altair and the constellation Aquilla? Declination Right Ascension Altair Aquilla 16. In what stage of stellar evolution do the following events occur? ___Planetary nebula, ___white dwarf ___main sequence ___neutron star ___Nebula ___protostar ___helium fusion ___supernova ___hydrogen fusion, ___nova ___black hole ___giant or supergiant ___star birth, ___star death ___pulsar ___extreme gravity