Chapter 3 Vocab

Chapter 3 Vocab

Sacagawea 

• A Shoshone woman who guided Lewis and Clark in their exploration of the northwestern United States.

Landform  

A feature of Earth’s surface, such as a mountain, valley, or plateau.  

Glacier 

• A thick sheet of ice that moves slowly across land.  

Erosion 

• The process by which environmental factors, such as wind, rivers, and rain, wear away soil and stone. 

River System 

• A network that includes a major river and its tributaries. 

1980 Mount St. Helen 

https://youtu.be/AYla6q3is6w