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- 1. Open Ended
Along the top of the diagram you see the different colors of stars. List the colors from left to right.
- 2. Multiple Choice
What variable is found along the x-axis on the HR diagram?
luminosity (brightness)
temperature
life cycle
popularity
- 3. Fill in the Blank
On the Hertzsprung Russell diagram, the x-axis is unusual because it goes in a _______ to ________ direction.
- 4. Multiple Choice
What variable is found along the y-axis on the HR diagram?
luminosity (brightness)
temperature
life cycle
popularity
- 5. Multiple Choice
Look at the HR diagram and find the group of stars labeled Main Sequence. Which of these is NOT a yellow, main sequence star?
Procyron
Sun
Alpha Centauri A
Polaris
- 6. Multiple Choice
Look at the HR diagram and find the group of stars labeled Main Sequence. Which of these is a blue, main sequence star?
Regulus
Sirius
Alpha Centauri A
Rigel
- 7. Open Ended
Look at the HR diagram and find the group of stars labeled Main Sequence. Name a red main sequence star.
- 8. Open Ended
Now using the HR diagram locate the group of stars labeled Supergiants. The stars in this group are those of at least 100 times the mass of our Sun. Name a white supergiant star.
- 9. Multiple Choice
Now using the HR diagram, locate the group of stars labeled Supergiants. Name the red supergiant stars, choose all that apply.
Antares
Betelgeuse
Bernard's Star
Polaris
- 10. Multiple Choice
Which star is hotter: Vega or Pollux?
Vega
Pollux
- 11. Multiple Choice
Which star is cooler: Polaris or Regulus?
Polaris
Regulus
- 12. Multiple Choice
Which star is brighter: Spica or Tau Ceti?
Spica
Tau Ceti
- 13. Multiple Choice
Which star is dimmer: Deneb or Mira?
Deneb
Mira
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