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