| A | B |
|---|
| Continents | 7 land masses |
| Appalachian Mountains | oldest mountain range in N. America |
| Canadian Shield | Horseshoe shaped; wrapped around Hudson Bay |
| Interior Lowlands | located west of the Appalachian |
| Great Plains | flat land that gradually increases in elevation westward, grasslands |
| Rocky Mountains | located west of the Great Plains, contains the Continental Divide |
| Continental Divide | determines the directional flow of the rivers |
| Basin and Range | contains Death Valley |
| Death Valley | lowest point in North America |
| Coastal Range | rugged mountains along the Pacific Coast |
| Atlantic Ocean | served as highway for explorers |
| Ohio River | gateway to the west |
| Great Lakes | the St. Lawrence seaway links them to the Atlantic Ocean. |
| The Mississippi River | transportaion artery for farm and industry,link to port |
