| A | B |
|---|
| Continental Divide | the imaginary line in the Rocky Mountains. It shows that all water flows either to the Pacific or Atlantic Ocean. |
| Mississippi River | largest river in North America |
| St.Lawrence River | the river that connects the Atlantic Ocean to the Great Lakes |
| Atlantic Coastal Plain | a flat stretch of land that borders the Atlantic Ocean from New Jersey to the Gulf of Mexico |
| Death Valley | the lowest point in the U.S. |
| The Great Lakes | Huron, Superior, Ontario, Erie, Michigan |
| The Great Plains | flat geographical landform in the middle of the U.S. |
| The Great Basin | large, arid region in the western U.S. |
