Tectonic Plate?
This is honestly a complete guess but I am pretty sure this is the answer
Our solar system is heliocentric, which means everything revolves around the sun. Geocentric would mean everything revolved around the earth.
Explanation:
because the earth equator is warmed by the most direct Ray's of the sun air at the equator is hotter than air further north or south.this hotter air rises up at the equator and as colder air moves in to take its place winds begin to blow and push the ocean into waves and currents