ThatQuiz ספריית תרגולים פתור תרגול זה עכשיו
Our universe
נתרם על ידי: Collins
  • 1. Absolute magnitude is the brightness of a star measured from ...
A) a stardard distance from earth
B) 1 light year away from earth
C) where it is
D) 1,000,000 km away
  • 2. Apparent magnitude how bright a star is measured from....
A) a stardard distance from earth
B) 1 light year way from earth
C) where it is
D) 1,000,000 km away
  • 3. What is the apparent magnitude of the sun?
A) -27
B) 7
C) -47
D) 0
  • 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) 0
D) 3
  • 6. What is the apparent magnitude of venus
A) 2
B) -5
C) -2
D) 0
  • 7. What is the apparent magnitude of the faintest object to the naked eye under perfect conditions?
A) 6.5
B) -.24
C) -2.8
D) 9.5
  • 8. What is the absolute magnitude of the sun?
A) -15
B) -25
C) 25
D) 5
  • 9. What relationship does the Hertzsprung-Russell diagram show?
A) The brightness and color of stars
B) The color and temperature of the stars
C) temperature and brightness of stars
D) All of the answers are correct
  • 10. What type of star is the sun on the Hertzsprung-Russell diagram?
A) super giant
B) giant
C) main sequence
D) white dwarf
  • 11. How are heat and color of a star related?
A) White stars are the hottest
B) red stars are the hottest
C) blue stars are the hottest
D) yellow 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) are main sequence stars
B) will become a Nebula
C) will become a black hole
D) will explode into a Nova or Super Nova
  • 14. A white dwarf is....
A) a start that has exploded
B) a cloud of gasses
C) None of the answers are correct
D) a extremely dense mass that no light can escape from
  • 15. Which of the following is NOT a type of galaxy?
A) conical
B) irregular
C) spiral
D) elliptical
  • 16. What is the closest major galaxy to ours?
A) Crab Nebula
B) Andromeda
C) Hercules
D) Alpha Centuari
  • 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) 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 closed.
B) It is open.
C) It is not known at this time.
  • 20. When "red shift" occurs....
A) objects are moving away from you
B) Objects are moving toward you.
C) Red stars are moving toward you.
D) Objects are stationary.
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