Additional Vocabulary for Additional Vocabulary for Chapter 4Chapter 4

1.1. Continental DivideContinental Divide

2.2. WatershedWatershed

3.3. Rain ShadowRain Shadow

Continental Divide Continental Divide of the United of the United StatesStates

The natural boundary line separating The natural boundary line separating waters that flow into the Atlantic Ocean or waters that flow into the Atlantic Ocean or Gulf of Mexico from those that flow into the Gulf of Mexico from those that flow into the Pacific Ocean. Pacific Ocean.

Western Continental DivideWestern Continental Divide

Rocky Mountain Range Rocky Mountain Range

East of the Rockies- Flows into the Gulf of East of the Rockies- Flows into the Gulf of MexicoMexico

West of the Rockies- Flows into the Pacific West of the Rockies- Flows into the Pacific OceanOcean

Map of Western Continental DivideMap of Western Continental Divide

Eastern Continental DivideEastern Continental Divide Appalachian MountainsAppalachian Mountains

Land Draining East- flows to the Atlantic Land Draining East- flows to the Atlantic OceanOcean

Land draining West and Southwest- flows to Land draining West and Southwest- flows to the Mississippi River, and the Gulf of Mexico. the Mississippi River, and the Gulf of Mexico.

Map of Eastern Continental DivideMap of Eastern Continental Divide

Continental Divides:Continental Divides:Fun Fact!!Fun Fact!!

Every continent except Antarctica has a Every continent except Antarctica has a continental divide, and like North America, continental divide, and like North America, a few have more than one. In South a few have more than one. In South America, the Continental Divide lies along America, the Continental Divide lies along the the Andes MountainsAndes Mountains..

WatershedWatershed

Area of land where all of the water drains Area of land where all of the water drains off and flows into the same place off and flows into the same place

Map of Chesapeake Bay Map of Chesapeake Bay WatershedWatershed

The Rain ShadowThe Rain Shadow A patch of land that has been forced to become a A patch of land that has been forced to become a

desertdesert because mountain ranges blocked all plant- because mountain ranges blocked all plant-growing, rainy growing, rainy weatherweather

On one side of the mountain, wet weather systems On one side of the mountain, wet weather systems drop rain and drop rain and snowsnow. .

On the other side of the mountain—the rain On the other side of the mountain—the rain shadow side—all that shadow side—all that precipitationprecipitation is blocked. is blocked.

Cascade MountainsCascade MountainsSierra Nevada MountainsSierra Nevada Mountains

Map of the Great BasinMap of the Great Basin