the lava creates a long line of mountains under the ocean called the Mid-ocean Ridge - the longest mountain range on Earth. The longest mountain range on land is the Andes in South America.

A single mid-ocean ridge system connects the world's oceans, making the ridge the longest mountain range in the world. On land, giant troughs such as the Great Rift Valley in Africa form where ...

It is now called the Mid-Ocean Ridge. In 1953, American physicists Maurice Ewing (1906-1974) and Bruce Heezen (1924-1977) discovered that through this underwater mountain range ran a deep canyon.

When rifting is successful, the new ocean basin gets wider and wider. New ocean floor is generated at the diverging boundary, and the edges of the now-split continents get farther apart. The now fully ...