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