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