| A | B |
|---|
| Basin and Range | Located west of Rocky Mountains and east of the Sierra Nevadas and the Cascades |
| Coastal Range | Rugged mountains along the Pacific Coast that stretch from California to Canada |
| Interior Lowlands | Located west of the Appalachian Mountains and east of the Great Plains |
| Coastal Plain | Located along the Atlantic Ocean and Gulf of Mexico |
| Canadian Shield | Wrapped around Hudson Bay in a horseshoe shape |
| Great Plains | Located west of Interior Lowlands and east of the Rocky Mountains |
| Appalachian Highlands | Located west of the Coastal Plain extending from eastern Canada to western Alabama; including the Piedmont |
| Rocky Mountains | Located west of the Great Plains and east of the Basin and Range |
