| A | B |
|---|
| atoll | A ring-shaped reef or island. |
| archipelago | Chain of islands. |
| badlands | Heavily eroded land with little vegetation. |
| basin | Low-lying land surrounded by taller land. |
| bay | Body of water partly enclosed by land. |
| butte | A small isolated hill with steep sides. |
| canyon | Deep, narrow valley with high, steep sides. |
| cape | Narrow land that sticks out into the water. |
| coral reef | Underwater structure made from limestone skeletons of marine animals. |
| delta | Land area formed by soil that is deposited at the mouth of a river. |
| dune | A mound or ridge of sand formed by wind. |
| fjord | A long, narrow, deep inlet of the sea between high cliffs. |
| foothills | Low hills at the base of a mountain range. |
| geyser | A hot spring in which boiling water periodically shoots out into the air. |
| glacier | A slowly moving mass of river of ice. |
| gulf | A deep inlet of the sea almost surrounded by land. |
| isthmus | A narrow strip of land with sea on either side, forming a link betwen two larger areas of land. |
| marsh | Lowland with moist soil and tall grasses. |
| mesa | Large flat-top mountain with steep sides. |
| peninsula | Piece of land that is surrounded by water on three sides. |
| plain | Flat land. |
| prairie | Grassland with few or no trees or hills. |
| rainforest | Area of dense tree growth found in tropical areas with heavy rainfall. |
| strait | Narrow channel that connects two larger bodies of water. |
| volcano | Cone-shaped mountain formed by an outpouring of lava. |
| plateau | Area of high, flat, land. |
| piedmont | Rolling land along the base of a mountain. |
| canal | Man-made waterway. |
| coastal plain | Lowland area lying along the ocean. |
| tributaries | Small streams that flow into a larger river. |
