What evidence supports the galactic fountain model?
A)We see a jet of ionized gas shooting out of the bulge of our galaxy.
B)We have mapped several spiral arms of the Milky Way Galaxy.
C)We see hot gas above the disk of the galaxy and cool gas that appears to be raining down from the halo.
D)We have observed a lot of water molecules in the interstellar medium.
E)We have no evidence yet for the galactic fountain model.

Question

Quizplus · Accepted Answer

The observation of hot gas above the disk of the galaxy and cool gas appearing to rain down from the halo supports the idea of a galactic fountain, in which gas is heated and ejected from the disk of the galaxy and then falls back down from the halo. The other options do not specifically relate to the galactic fountain model.

What Evidence Supports the Galactic Fountain Model