Our universe
  • 1. Absolute magnitude is the brightness of a star measured from ...
A) 1 light year away from earth
B) where it is
C) a stardard distance from earth
D) 1,000,000 km away
  • 2. Apparent magnitude how bright a star is measured from....
A) 1 light year way from earth
B) a stardard distance from earth
C) 1,000,000 km away
D) where it is
  • 3. What is the apparent magnitude of the sun?
A) 7
B) 0
C) -47
D) -27
  • 4. What is the apparent magnitude of the moon?
A) -24
B) 0
C) 14
D) -13
  • 5. What is the apparent magnitude of mars?
A) -14
B) 0
C) -3
D) 3
  • 6. What is the apparent magnitude of venus
A) -2
B) 2
C) -5
D) 0
  • 7. What is the apparent magnitude of the faintest object to the naked eye under perfect conditions?
A) -2.8
B) 6.5
C) 9.5
D) -.24
  • 8. What is the absolute magnitude of the sun?
A) -25
B) 25
C) -15
D) 5
  • 9. What relationship does the Hertzsprung-Russell diagram show?
A) The brightness and color of stars
B) The color and temperature of the stars
C) All of the answers are correct
D) temperature and brightness of stars
  • 10. What type of star is the sun on the Hertzsprung-Russell diagram?
A) giant
B) main sequence
C) white dwarf
D) super giant
  • 11. How are heat and color of a star related?
A) yellow stars are the hottest
B) White stars are the hottest
C) red stars are the hottest
D) blue stars are the hottest
  • 12. How are heat and color of a star related?
A) yellow stars are the coolest
B) blue stars are the coolest
C) red stars are the coolest
D) white stars are the coolest
  • 13. Most stars.....
A) will become a black hole
B) will become a Nebula
C) will explode into a Nova or Super Nova
D) are main sequence stars
  • 14. A white dwarf is....
A) None of the answers are correct
B) a start that has exploded
C) a cloud of gasses
D) a extremely dense mass that no light can escape from
  • 15. Which of the following is NOT a type of galaxy?
A) irregular
B) conical
C) spiral
D) elliptical
  • 16. What is the closest major galaxy to ours?
A) Alpha Centuari
B) Hercules
C) Crab Nebula
D) Andromeda
  • 17. The Big Bang Theory explains....
A) how long it will take to travel in space
B) how stars explode
C) how the sound travels through space
D) the formation of the universe
  • 18. Astronomers think the universe is about...
A) 100 million years old
B) 1 billion years old
C) 14 billion years old
D) 4 billion years old
  • 19. Is the universe "open" or "close"
A) It is closed.
B) It is open.
C) It is not known at this time.
  • 20. When "red shift" occurs....
A) Objects are moving toward you.
B) Red stars are moving toward you.
C) Objects are stationary.
D) objects are moving away from you
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