| Term | Definition |
| basin | bowl-shaped area of land surrounded by higher land |
| bay | an inlet of the sea or some other body of water, usually smaller than a gulf |
| canyon | deep, narrow valley with step sides |
| cape | point of land that extends into the water |
| coast | land along sea or ocean |
| island | land that has water on all sides |
| lake | body of water with land on all sides |
| mountain range | row of mountains |
| mouth of river | place where a river empties into another body of water |
| peninsula | land that is almost completely surrounded by water |
| river | large stream of water that flows across land |
| strait | narrow channel of water connecting two larger bodies of water |
| volcano | raised opening in earth throught which lava, rock, and ashes are forced out |
| tributary | stream or river that flows into a larger stream or river |
| waterfall | steep drop from a high place to a low place in a stream or river |
| isthumus | narrow strip of land connecting two larger areas of land |
| ocean | body of salt water larger than a sea |
| peak | top of a mountain |
| valley | low land between hills or mountains |
| plain | area of flat or gently rolling low land |
| delta | traingle-shaped area of land at the mouth of a river |
| reef | ridge of sand, rock, or coral that lies at or near the surface of a sea or ocean |