Tidal Forces In Other Planet Systems
Tidal features have been observed in other planet systems. For instance, Jupiter’s moon, Europa, is covered with large cracks that are attributed to Jupiter’s enormous gravity pulling on the moon, causing the thick ice crust to fracture (Figure 11.22). Tidal forces release heat, enough to melt large quantities of ice below its surface, allowing the Solar System’s largest oceans to remain liquid.
Jupiter's moon, Io, is perhaps the most geologically active moon in the Solar System (Figure 11.23). Tidal forces between Jupiter and its other moons are generating heat within the moon that are driving volcanic activity, recycling the planets crust every few million years. Tidal forces also play a role in the heat generated within planet Earth, and may have a significant influence on plate-tectonics and magnetic reversals associated with the core.