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Transcript Name: Date: Period: HR Diagram Practice Page Directions: Study the HR Diagram below carefully to answer the following questions. 1. Which star is brighter? Aldeberan or Betelgeuse 2. Which star is cooler? Rigel or Mira 3. Which star is larger in size? Polaris or Alpha Centauri B 4. Which star has a higher temperature? Tau Ceti or Procyon B 5. Which star is hotter? Regulus or Deneb 6. Which star is smaller in size? Sun or Antares 7. Which star is hotter? Altair or Rigel 8. Which star is dimmer? Antares or Sun 9. Which star is larger in size? Deneb or Mira 10. Which star has a higher temperature? Altair or Alpha Centauri A 11. Which is hotter? Spica or Vega 12. Which star is at the end of its life? Sirius B or Betelgeuse 13. Which star is younger? Van Maanen’s Star or Wolf 359 14. Which star is middle-aged? Tau Ceti or Aldebaran 15. Which star is white dwarf? Procyon A or Procyon B 16. Which star is a red giant? Arcturus or Spica 17. Which star is a main sequence star? Sun or Polaris Adapted from Region IV’s 8th Grade Gateways to Science: STAAR Edition Book Unit 4: Lesson 4 18. Why do white dwarfs produce so little light when they are so hot? 19. How can red giants be so bright when they are so cool? 20. What is the general trend of surface temperature and the magnitude of brightness of main sequence stars? 21. Describe the following about our star, the Sun. Temperature: Hot Average Cool Luminosity: Bright Average Dim Color: Blue Blue-White White Yellow-White Yellow Spectral Class: O B A F G K M Age: Young Middle-Aged Old Star Type: Main Sequence Giant Red Giant Orange 22. Describe the following about the star Betelgeuse. Temperature: Hot Average Cool Luminosity: Bright Average Dim Color: Blue Blue-White White Yellow-White Yellow Spectral Class: O B A F G K M Age: Young Middle-Aged Old Star Type: Main Sequence Giant Red Giant Orange 23. Describe the following about the star Procyon B. Temperature: Hot Average Cool Luminosity: Bright Average Dim Color: Blue Blue-White White Yellow-White Yellow Spectral Class: O B A F G K M Age: Young Middle-Aged Old Star Type: Main Sequence Giant Red Giant Orange Red White Dwarf Red White Dwarf Red White Dwarf Adapted from Region IV’s 8th Grade Gateways to Science: STAAR Edition Book Unit 4: Lesson 4 Related documents