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