1. Additional Vocabulary for Chapter 4 1. Continental Divide 2. Watershed 3. Rain Shadow

2. Continental Divide of the United States  The natural boundary line separating waters that flow into the Atlantic Ocean or Gulf of Mexico from those that flow into the Pacific Ocean.

3. Western Continental Divide  Rocky Mountain Range  East of the Rockies- Flows into the Gulf of Mexico  West of the Rockies- Flows into the Pacific Ocean

4. Map of Western Continental Divide

5. Eastern Continental Divide  Appalachian Mountains Appalachian Mountains Appalachian Mountains  Land Draining East- flows to the Atlantic Ocean  Land draining West and Southwest- flows to the Mississippi River, and the Gulf of Mexico.

6. Map of Eastern Continental Divide

7. Continental Divides: Fun Fact!!  Every continent except Antarctica has a continental divide, and like North America, a few have more than one. In South America, the Continental Divide lies along the Andes Mountains. Andes Mountains.Andes Mountains.

8. Watershed  Area of land where all of the water drains off and flows into the same place

9. Map of Chesapeake Bay Watershed

10. The Rain Shadow  A patch of land that has been forced to become a desert because mountain ranges blocked all plant- growing, rainy weather  On one side of the mountain, wet weather systems drop rain and snow.  On the other side of the mountain—the rain shadow side—all that precipitation is blocked.

11. Cascade Mountains Sierra Nevada Mountains

12. Map of the Great Basin