| A | B |
|---|
| weathering | physical or chemical processes that change the characteristics of rock on or near the earth's surface |
| sediment | small pieces of rock |
| mechanical weathering | process that breaks down rock |
| chemical weathering | process that changes rock into a new substance |
| erosion | process by which weathered material is moved by wind, water, ice, or gravity |
| delta | landform created when sediment is deposited as a river enters the ocean |
| Ioess | wind-blown silt and clay sediment that produces very fertile soil |
| glacier | a large, long-lasting mass of ice |
| glaciation | the changing of landforms by the movement of glaciers |
| moraine | a ridge of rocks left behind by a glacier |
| humus | organic matter in the soil |
