Stars and Galaxies - Quiz
- 1. What color star has the highest surface temperature?
A) red
B) yellow
C) blue
D) white
- 2. Which means the same as luminosity?
A) absolute brightness
B) intrinsic brightness
C) apparent brightness
D) brightness
- 3. Which is not part of a spiral galaxy?
A) nuclueus
B) spiral arms
C) halo
D) super cluster
- 4. What is the most important factor that causes matter in a nebula to form clumps?
A) molecular motion
B) gravitational attraction
C) heating
D) rotation
- 5. Which magnitude describes the brightest star?
A) -0.5
B) -2.5
C) 1.3
D) 2.5
- 6. What is measured on the Y-axis?
A) temperature
B) color
C) diameter
D) luminosity
- 7. Which type of star is located in the bottom center of the diagram?
A) supergiant
B) white dwarf
C) giant
D) main sequence star
- 8. What type of star is topmost in the diagram?
A) supergiant
B) white dwarf
C) giant
D) Sun-like
- 9. About how long does it take light from the Sun to reach Earth?
A) 8 days
B) 8 hours
C) 8 seconds
D) 8 minutes
- 10. The most massive stars end their lives as which type of object?
A) black dwarf
B) white dwarf
C) neutron star
D) black hole
- 11. Which is a group of stars, gas, and dust held together by gravity?
A) black hole
B) constellation
C) galaxy
D) supergiant
- 12. Which is the most abundant element in the Sun?
A) hydrogen
B) helium
C) carbon
D) oxygen
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