| A | B |
| bay | a part of an ocean or lake that is partly enclosed by land |
| volcano | a mountain that builds up around an opening in Earth's surface. |
| delta | an area formed by soil washed downstream by a river |
| glacier | a large body of ice that moves slowly down a mountain |
| island | an area of land surrounded by water |
| mountain range | a group of connected mountains or steep, high land areas |
| mouth of a river | the place where a river flows into a larger body of water |
| ocean | the entire body of salt water that covers almost 3/4 of Earth's surface |
| peninsula | a piece of land that is surrounded by water on 3 sides |
| plain | a broad stretch of level, or nearly level, land |
| plateau | a large, level area of high land |
| source of a river | the place where a river begins |
| strait | a narrow waterway that connects two larger bodies of water |
| tributary | a stream or river that flows into a larger river |
| coast | land that borders on the sea or ocean |