| A | B |
| canyon | a deep narrow river valley with steep slopes |
| coastal plain | a lowland plain bordered by the Atlantic Ocean on the east coast and the Fall Line on the west coast of the US |
| delta | a fan-shaped area of land where a stream drops sediment and other materials as it empties into the sea or another large body of water |
| flat land | a piece of earth that has little to no elevation |
| floodplains | lowland that usually border a river, usually dry until large amounts of rain occur causing overflow and drainage of water to accumulate in the area |
| glacier | huge mass of ice and snow that exists year-round and moves very slowly often causing erosion |
| lake | a large body of fresh or salt water that is surrounded by land |
| landforms | a natural structure of the earth's surface, such as mountains, plateaus and plains |
| mesa | a hill or mountain with steep sides and a flat top |
| mountain | an area of land that rises sharply to great heights |
| oxbow lake | a lake that forms when a river breaks through the neck of a meander |
| plain | a large area of flat land with few trees |
| plateau | a large area of raised land that is relatively flat; an area of high, flat land |
| valley | a long narrow area of land between mountains or hills, often with a river or stream that runs through it |