Download HR Diagram Practice Page

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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