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Home Q & A Board Science-Related Homework Help Physics Astronomy
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jackiemartini09 jackiemartini09
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6 years ago
In the diagram below, what is the diameter of Mercury?
   
   
 
 
  a. about 240 km
  b. about 2400 km
  c. about 24,000 km
  d. about 240,000 km
  e. about 2.4106 km

Question 2

Proxima Centauri is _____ away from Earth.
 
  A) 2.1 light-years
  B) 4.2 light-years
  C) 6.3 light-years
  D) 8.4 light-years

Question 3

Which of the following is true of planets?
 
  A) They are self-luminous balls of hot gases.
  B) They generate their own energy.
  C) They are of identical size.
  D) They are nonluminous bodies.
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qurat.ain46qurat.ain46
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6 years ago
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6 years ago
White Heavy Checkmark Correct!
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