| A | B |
| a feature of the earth's surface | landform |
| height of a landform in relation to sea level | elevation |
| the level of the oceans' surface | sea level |
| Rainwater, ice, wind, and other forces wear away soil and rock. | erosion |
| imaginary line through the Rocky Mountains; rivers that start on the West side flow into the Pacific Ocean and rivers that start on the east side flow into the Atlantic Ocean, Mississippi River, or Gulf of Mexico. | Continental Divide |
| The Columbia River starts west of the Continental Divide and flows into the ___________. | Pacific Ocean |
| This landform has a higher elevation than the surrounding land. | mountain |
| This landform has a low elevation and sometimes contains a river. | valley |
| This geographic feature is a stream of fresh water that flows downhill. | river |
| Low areas that lie below the land around them like shallow holes scooped out of the ground. | basins |
| These are broad, smooth areas of land. | plains |
| A landform almost entirely surrounded by water; like a finger reaching out from your hand. | peninsula |
| Large bodies of water surrounded by land. | lakes |
| The third longest river in the world. | Mississippi |
| These mountains get their name from their sharp peaks. | Rockies |