See textbook glossary or dictionary for definitions. Also see the illustration below for an illustration of landforms with an *.
1. ocean* -- a great expanse of salt water
2. sea* -- a relatively large body of water, either part of an ocean that is partially surrounded by land (the Caribbean Sea), or a body of water that is completely landlocked (the Caspian Sea)
3. prairie -- an extensive area of flat or rolling, mostly treeless grassland
4. plateau -- an elevated level expanse of land; a tableland.
5. mountain -- An high, steep elevation of the earth's surface, higher than a hill.
6. volcano -- An opening in the earth's crust through which molten lava, ash, and gases are ejected
7. archipelago* -- a chain of islands
8. island -- a piece of land completely surrounded by water
9. peninsula* -- a narrow stretch of land surrounded on three sides by water
10. gulf* -- A large area of a sea or ocean partially enclosed by land (the Gulf of Mexico)
11. bay -- an area of sea partially enclosed by land, smaller than a gulf
12. sound* -- a long passage of water connecting two larger bodies
13. isthmus* -- a narrow strip of land, like a bridge, connecting two larger strips of land
14. delta -- a place at the river's mouth, where the river splits into many different sections, forming a marshy triangle.
15. river mouth -- the place where a river empties into a larger body of water
16. harbor -- a sheltered part of a body of water deep enough to provide anchorage for ships
17. strait -- A narrow channel of water joining two larger bodies of water (usually narrower than a sound)
18. cape -- A point or head of land projecting into a body of water
19. river -- A large natural stream of water emptying into an ocean, lake, or other body of water
20. tributary* -- A stream that flows into a larger stream or other body of water
21. valley -- An elongated lowland between ranges of mountains, hills, or other uplands, often having a river or stream running along the bottom
22. divide* -- a ridge of land that marks the directional flow of rivers on either side
23. moraine* -- An accumulation of boulders, stones, or other debris carried and deposited by a glacier
24. glacier -- A huge mass of ice slowly flowing over a land mass
25. butte -- A hill that rises abruptly from the surrounding area and has sloping sides and a flat top
26. mesa -- A broad, flat-topped elevation with one or more clifflike sides
27. canyon -- A narrow chasm with steep cliff walls, cut into the earth by running water
28. lake* -- A large inland body of fresh water or salt water
29. basin* -- A large, bowl-shaped depression in the surface of the land, often drained by a single river (the Amazon Basin)
30. hill* -- a small elevation in the earth's surface
31. swamp -- A lowland region saturated with water
32. oasis -- A fertile or green spot in a desert or wasteland
33. desert -- an area with very little rainfall or vegetation
34. steppe -- A vast grass-covered plain
35. cataract -- A large or high waterfall
36. marsh -- An area of soft, wet, low-lying land, with grassy vegetation, often forming a transition zone between water and land
37. flood plain -- A plain bordering a river and subject to flooding