| Term | Definition |
|---|
| landform | A physical feature of the Earth's surface. |
| weathering | The process of wind, water, temperature changes, and other factors in breaking down rocks into soil and tiny pieces. |
| erosion | The process of wearing away or moving soil and rock by water, wind, and ice. |
| deposition | The process of dropping or depositing sediment in a new location. |
| sedimentation | The process of particles clumping together and settling to the bottom of a body of water. |
| glacier | A large body of year-round ice and snow that moves slowly across the land and deposits sediment where it melts. |
| plateau | A large area of flat land higher than the surrounding land. |
| plain | A large, flat area of land with few trees. |
| delta | A deposit of sediment where a stream enters a large, calmer body of water. |
| source | The beginning of a stream or river. |
| tributary | A stream or river that feeds into a larger body of water. |
| floodplain | The low-lying land near a stream or river that is covered by water during heavy rainfall or spring melting. |
| river | A large natural spring that flows into a lake or ocean. |
| valley | A long, low area of land between hills or ranges of mountains. |
| canyon | A steep-walled river valley cut through layers of rock. |
| meander | A bend or large, sweeping curve in a stream or river. |
| watershed | An area of land that is drained by a common system of streams. |
| flow | To move or pass along evenly in a stream. |
| slope | Land that is on an incline. |
| ground cover | Trees, shrubs, grasses, and litter that holds soil in place. |
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