Exam 9: Life on Jovian Moons

Energy to support a reasonable total biomass of ongoing life in a Europan ocean would probably come from

Methane should be rapidly destroyed in Titan's atmosphere, yet it is still present in appreciable amounts. How can this be?

The fact that the strength of gravity decreases with distance means the force of gravity exerted by one object on another (e.g., the Earth and Moon) is greater on the near side than the far side. This effect is commonly referred to as a

Triton's retrograde orbit is consistent with it having

In chemistry, oxidation occurs when a substance

Most of the key energy-generating chemical reactions used by life on Earth are

The most abundant component of Titan's atmosphere is

The largest Jovian moon that appears to have been captured is

Compared to life on Europa, if life exists on Ganymede it will probably be

The Jovian moons Io, Europa, Callisto and Triton are

The Jovian moons Ganymede and Titan are

The overall composition of Titan's atmosphere is most similar to the atmosphere of which terrestrial planet?

Which Galilean moons of Jupiter show evidence for subsurface oceans of water beneath their icy crusts?

Most of the liquid hydrocarbons on Titan are concentrated in

What is the origin of the nitrogen in Titan's atmosphere?

Which of the following energy sources might supply energy for life on the surface of Titan?

Which Galilean moon of Jupiter is volcanically active?

What source of energy might keep an ocean beneath the surface of Callisto liquid?

Which of the following discovered surrounding Enceladus by the Cassini space suggest the presence of liquid water beneath the surface?

Triton, the largest moon of Neptune was probably once