Conversation so far:
where does most of earth's energy come from
Most of the energy in the Earth system comes from just a few sources: solar energy, gravity, radioactive decay, and the rotation of the Earth.
what does solar energy drive on earth
Solar energy drives many surface processes such as winds, currents, the hydrologic cycle, and Earth's overall climate system.

Question: how about gravity
Self-contained rewrite: what does gravity drive on earth