Instead of forcing the ground up, the two plates in the middle of the Atlantic Ocean are actually moving apart in opposite directions. The Andes are the world's longest mountain range. This causes ...

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 ...

Marie Tharp’s maps of the Atlantic Ocean floor did more than just reveal an underwater mountain range—they transformed the ...