| A | B |
| weathering | the action of the elements in altering the color, texture, composition, or form of exposed objects |
| chemical weathering | where chemicals like in acid rain wear away the surface of the earth |
| agents of erosion | the things that contribute to the eroding of rock |
| dust bowl | a region that suffers from prolonged droughts and dust storms |
| moraines | an accumulation of earth and stones carried and finally deposited by a glacier |
| "ice age" | a time of widespread glaciation |
| mechanical weathering | the process by which rock is broken down physicaly |
| acid rain | acid precipitation in the form of rain |
| sediment | material deposited by water, wind, or glaciers |
| "U"shaped valleys | A valley that is "U" shaped and is usually made by a rock that has been froze into a glacier. |
| continental glaciers/ice sheets | glaciers that are one lend and huge sheets of ice |
| frost wedging | where water gets down in between rocks and when it freezes it expands and breaks the rock apart |
| erosion | an instance or product of erosive action |
| delta | A deposite of soil at the mouth of a river usually in a triangular form |
| glaciers | a large body of ice moving slowly down a slope or valley or spreading outward on a land surface |
| "V" shaped valleys | A velley that is "V" shaped and is made by a river |
| valley/alpine glaciers | an elongate depression of the earth's surface usually between ranges of hills or mountains |