| A | B |
|---|
| channel | deepest part of a body of water |
| canyon | deep, narrow valley with steep sides |
| coast | land along a sea or ocean |
| harbor | an area of water where ships can dock safely |
| cape | point of land that extends into water |
| hill | land that rises above the land around it |
| bay | body of water that is part of a sea or an ocean and is partly enclosed by land |
| coastal plain | land along a sea or ocean |
| delta | triangle-shaped area of land at the mouth of a river |
| dune | hill of sand piled up by the wind |
| fall line | area along which rivers form waterfalls or rapids as the rivers drop to lower land |
| floodplain | flat land that is near the edges of a river and is formed by deposited silt |
| foothills | hilly area near the base of a mountain |
| glacier | large ice mass that moves slowly across the land |
| gulf | body of water that is partly enclosed by land that is larger than a bay |
| isthmus | a narrow strip of land connecting two larger areas of land |
| lake | body of water with land on all sides |
| mesa | flat-topped mountain with steep sides |
| mountain | highest kind of land |
| mountain pass | gap between mountains |
| mountain range | row of mountains |
| mouth | place where a river empties into another body of water |
| ocean | body of salt water larger than a sea |
| peak | top of a mountain |
| peninsula | land that is almost completly surrounded by water |
| plain | flat land |
| plateau | area of high, flat land with steep sides |
| reef | ridge of sand, rock, or coral that lies at or near the surface of a reef or ocean |
| river | large stream of water that flows across the land |
| bank | land along a river |
| sea | body of salt water smaller than an ocean |
| sea level | the level that is even with the surface of an ocean or sea |
| slope | side of a hill or mountain |
| source | place where a river begins |
| strait | narrow channel of water connecting two larger bodies of water |
| tributary | stream or river that empties into a larger river |
| valley | low land between hills or mountains |
| volcano | opening in the Earth, often raised, through which lava, rock, ashes and gasses are forced out |
