| A | B |
|---|
| weathering | the chemical or mechanical process by which rock is gradually broken down, eventually becoming soil |
| chemical weathering | the process by which the actual chemical structure of rock is changed, usually when water and carbon dioxide cause a breakdown of the rock |
| agents of erosion | rocks, mountains, dams |
| dust bowl | something that happened in n1930 |
| moraines | a ridgelike mass of rock |
| ice age | a time in history when is was all ice |
| mechanical weathering | the actual breakiny up or physical weakening of rock by forces such as ice and roots |
| acid rain | the result of power plants relleasing chemicals into rain clouds |
| sediment | small rocks, pebbles, and dirt |
| loess | fine-grained, mineral-rich loam,dust, or silt depsoited by the wind |
| "U" shaped valleys | valleys shaped by water erosion |
| continental glaciers/ ice sheet | giant pieces of ice that slide around the earth |
| frost wedging | the process of when water gets into cracks of rocks and freezes then splits the rock |
| erosion | the action of removing weathered material |
| delta | at the mouth of a river: the sediment gathered together |
| glaciers | big sheets of ice |
| "V" shaped valleys | shaped by glaciers |
| valley0alpine glaciers | glaciers that slide down in valleys |
