The movement of the plates creates three types of tectonic boundaries: convergent ... slowly giving rise to the Himalaya, the highest mountain system on Earth. As the mash-up continues, the ...

the two crush together at what is known as a collisional boundary. They crumple and fold. Some pieces of land are thrust over or under other pieces. The result is a mountain range. The Himalayas ...

The Earth's longest mountain chain isn't the Andes in South America, or the Himalayas in Asia, or even North America's Rockies. It's an underwater chain of mountains 47,000 miles long. The chain ...