The Physical Environment

The Earth’s Materials and Internal Processes

How are mountains formed?

The process of orogeny, or mountain building, is related to continental drift. When two tectonic plates collide, they often form mountains. The Himalayas are the result of the Indo-Australian plate colliding with the Eurasian plate. At these collision zones, volcanoes and earthquakes are common.


This is a web preview of the "The Handy Geography Answer Book" app. Many features only work on your mobile device. If you like what you see, we hope you will consider buying. Get the App