The process renews the ocean floor and widens the giant basins. A single mid-ocean ridge system connects the world's oceans, making the ridge the longest mountain range in the world. On land ...

An ocean may in time develop from a rift in the Afar Triangle, in the Horn of Africa which will be close to America.

Therefore, on Earth, volcanoes are generally found where tectonic plates are diverging or converging. For example, a mid-oceanic ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by ...

or even the Mid-Atlantic Ridge deep in the ocean. Some mountain ranges are formed when two sections of the Earth’s outer surface, called tectonic plates, push against each other and the pressure ...