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Home Q & A Board Science-Related Homework Help Physics Astronomy
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hannah415 hannah415
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6 years ago
Which moon is considered likely to have a deep, subsurface ocean of liquid water?
 
  A) Europa
  B) Io
  C) Miranda
  D) Triton

Question 2

Because of their mass, the threshold temperature for electrons is:
 
  A) higher than that of neutrons.
  B) lower than that of protons.
  C) higher than that of protons.
  D) lower than that of hydrogen.
  E) higher than that of hydrogen.

Question 3

It was the distribution of ________ that showed Harlow Shapley we were no where near the center of the Milky Way in the 1920s.
 
  A) planetary nebulae
  B) emission nebulae
  C) open clusters
  D) globular clusters
  E) supernova remnants

Question 4

On an H-R diagram, stellar masses
 
  A) can be determined for main-sequence stars but not for other types of stars.
  B) are greatest in the lower left and least in the upper right.
  C) decrease from upper left to lower right.
  D) are impossible to determine.

Question 5

The most metal-rich terrestrial planet is
 
  A) Mercury.
  B) Venus.
  C) Earth.
  D) the Moon.
  E) Mars.
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wasgood27wasgood27
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6 years ago
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hannah415 Author
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#2
6 years ago
Great answers! <3
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