What is the galactic fountain model? A) the idea that there is ...

[ENagel]

What is the galactic fountain model?
 
  A) the idea that there is a lot of interstellar water vapor
  B) the theory that the Milky Way is a spiral galaxy and looks like a whirlpool from above
  C) the theory that hot, ionized gas blows out of the galactic center like a jet or fountain
  D) the theory that hot, ionized gas blown out of the galactic disk and into the halo by superbubbles cools down and falls back into the disk
  E) none of the above

Question 2

Suppose the distance to the Moon were twice its actual value. Could we still have solar eclipses? If so, what type(s)?
 
  What will be an ideal response?

[jointhecircus]

Answer to Question 1

D

Answer to Question 2

If the Moon were twice its actual distance from us, we would no longer be able to see total solar eclipses because the Moon would not be able to completely cover the surface of the Sun; however, we would still see partial and annular eclipses, although the Moon would not block as much of the Sun during these times.

[ENagel]

Thanks for the timely response, appreciate it

[amcvicar]

Excellent