Landforms are created by physical forces that either build up or wear down the Earth's surface.

Tectonic forces such as volcanoes, folding, and faulting build up the Earth's surface and create landforms, such as mountains and valleys.

View the slide show below to see examples of these types of landforms.

Now watch this video to see examples of other types of landforms.

As you look at the photographs, think about what might have caused these types of landforms?

In this lesson, you will examine the forces of weathering and erosion. These two forces wear down the Earth's surface and make it more level.