| A | B |
|---|
| weathering | Any of the chemical or mechanical processes by which rocks exposed to the weather undergo changes in character and break down. |
| mechanical weathering | The physical changes in rocks from weathering. |
| frost wedge | The frozen ice that forms in the rock's fractures over night. |
| chemical weathering | The chemical changes that alter the rocks into something completely different. |
| acid rain | A type of rain formed from a cloud that has been polluted. It damages rocks and pullutes water. |
| erosion | The movement of weathered materials from one place to another. |
| agents of erosion | glaciers, wind, and water |
| sediment | Small rock particles. |
| delta | deposited rock particales that form at the mouth of a river |
| dust bowl | A region reduced to aridity by drought and dust storms. |
| loess | A buff to gray windblown deposit of fine-grained, calcareous silt or clay. |
| glaciers | A huge mass of ice slowly flowing over a land mass, formed from compacted snow in an area where snow accumulation exceeds melting and sublimation. Also an agent of erosion. |
| moraines | An accumulation of boulders, stones, or other debris carried and deposited by a glacier. |
| "U" Shaped valleys | Formed from glaciers that have been through where the valley is. |
| "V" shaped valleys | Valleys formed from water runing through that area in a period of thousands of years. |
| Ice Age | A time or period when ice covered most of the earth's continents. |
| continental clagiers/ice sheets | A broad ice sheet resting on a plain or plateau and spreading outward from a central or region of accumilation. |
| valley/alpine glaciers | Glaciers that form on mountains or valleys and slide away from them. |
