There are three possible fates for the universe: 1)eternal expansion; 2)total collapse; or 3)some equilibrium condition with no further motion.What conditions might favor one result over the other?
A)Critical velocity-is there enough momentum to continue expansion forever?
B)Critical density-is there enough mass in the universe to cause gravitational collapse?
C)Critical energy-is there enough energy in the universe to maintain either expansion or collapse?
D)Critical volume-is the universe large enough for unlimited expansion?

Question

Quizplus · Accepted Answer

The fate of the universe depends on whether the critical density has been reached. If the density of matter in the universe is greater than the critical density, gravity will eventually overcome the expansion, leading to a collapse known as the Big Crunch. If the density is below the critical density, the universe will continue to expand forever. The equilibrium option is unlikely as it would require a delicate balance between expansion and gravity. The critical velocity and energy are related to the expansion rate, but do not determine the ultimate fate of the universe. The critical volume does not have a direct impact on the fate of the universe.

There Are Three Possible Fates for the Universe: 1)eternal Expansion;