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