| A | B |
| valley | low land between hills or mountains |
| volcano | an opening in the earth's surface through which steam, ashes, and lava are forced out |
| tributary | a stream or river that flows into a larger stream or river |
| harbor | a sheltered area of water where ships can anchor safely |
| canal | an artificial water waterway constructed for navigation or for the movement of water |
| archipelago | a large group of islands |
| bay | a body of water that extends into the land |
| beach | a rocky or sandy edge of land along a body of water |
| cape | a point of land that juts out into water |
| channel | a body of water that connects two larger bodies of water |
| isthmus | a narrow strip of land that connects two larger land areas |
| lake | a large body of water surroundedby land |
| marsh | a low, wet, area where grasses, rushes, and cattails grow |
| mountain | a high area of land with steep sides and a sharp peak |
| ocean | the body of salt water that covers most of the earth |
| peninsula | an area of land that is nearly surrounded by water |
| prairie | a region of flat or hilly land covered by tall grasses |
| delta | a fan-shaped deposit of sand and mud at the mouth of a river |
| fjord | a long, narrow inlet of the sea between cliffs or slopes |
| forest | a large area of land covered with trees and other plants |
| gulf | a large body of salt water that is partly enclosed by land |
| island | a piece of land that is surrounded by water |
| desert | a region of little rainfall where few plants and animals live |
| river | a long body of water that flows over land |
| sea | a body of salt water that is partly enclosed by land |
| sound | a long wide ocean inlet |
| strait | a narrow body of water that connects two larger bodies of water |
| swamp | a low, wet area where trees and high shrubs grow |
| atoll | a ring of coral that encloses a pool of seawater |
| butte | an isolated hill with sloping sides and a small, flat top |