| A | B |
|---|
| Glacier | A huge mass of ice and snow that moves slowly over land. |
| Valley glacier | A long, narrow glacier that forms when snow and ice build up in a mountain valley. |
| Continental glacier | A glacier that covers much of a continent or large island. |
| Ice Age | Cold time periods in Earth's history, during which glaciers covered large parts of the surface. |
| Plucking | The process by which a glacier picks up rocks as it flows over the land. |
| Till | The sediments deposited directly by a glacier. |
| Moraine | A ridge formed by the till deposited at the edge of a glacier. |
| Kettle | A small depressino that forms when a chunk of ice is left in glacial till. |
| Beach | Wave washed sediment along a coast. |
| Longshore drift | The movement of water and sediment along a beach caused by waves coming into shore at an angle. |
| Spit | A beach formed by longshore drift that projects like a finger out into the water. |
| Sand dune | A deposit of wind-blown sand. |
| Deflation | Wind erosion that removes surface materials. |
| Loess | A wind-formed deposit made of fine particles of clay and silt. |
| Creep | A very slow downhill movement of rock and soil. |
| Erosion | The process by which natural forces move weathered rock and soil from one place to another. |
| Load | The amount of sediment that a river or stream carries. |
| Mass movement | Any one of several processes that move sediment downhill. |
| Runoff | Water that flows over the ground surface rather than soaking into the ground. |
| Sediment | The material moved by erosion. |
| Stream | A channel through which water is continually flowing downhill. |
