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Our universe
Contribució de: Collins
  • 1. Absolute magnitude is the brightness of a star measured from ...
A) 1 light year away from earth
B) 1,000,000 km away
C) a stardard distance from earth
D) where it is
  • 2. Apparent magnitude how bright a star is measured from....
A) a stardard distance from earth
B) 1,000,000 km away
C) 1 light year way from earth
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) 14
B) -24
C) 0
D) -13
  • 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) 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) 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) temperature and brightness of stars
B) The brightness and color of stars
C) The color and temperature of the stars
D) All of the answers are correct
  • 10. What type of star is the sun on the Hertzsprung-Russell diagram?
A) main sequence
B) white dwarf
C) super giant
D) giant
  • 11. How are heat and color of a star related?
A) yellow stars are the hottest
B) blue 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) 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) 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) a extremely dense mass that no light can escape from
B) a cloud of gasses
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) irregular
D) conical
  • 16. What is the closest major galaxy to ours?
A) Crab Nebula
B) Alpha Centuari
C) Hercules
D) Andromeda
  • 17. The Big Bang Theory explains....
A) how the sound travels through space
B) the formation of the universe
C) how long it will take to travel in space
D) how stars explode
  • 18. Astronomers think the universe is about...
A) 4 billion years old
B) 14 billion years old
C) 1 billion years old
D) 100 million years old
  • 19. Is the universe "open" or "close"
A) It is open.
B) It is not known at this time.
C) It is closed.
  • 20. When "red shift" occurs....
A) Objects are moving toward you.
B) objects are moving away from you
C) Red stars are moving toward you.
D) Objects are stationary.
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