| A | B |
|---|
| folded mountains | mountains that are forced and squeezed from opposite sides |
| upwarped mountains | formed when crust is pushed upward by forces inside the earth |
| fault-block mountains | made of huge tilted blocks of rocks that are separted from surrounding rocks by faults |
| weathering | process that breaks down rocks into smaller sediments |
| ice wedging | when water freezes in cracks of rocks it expands. Repeated thawing and freezing breaks up rock |
| valley glacier | The most common type of glacier |
| till | mixture of different sized sediments deposited by glaciers |
| meltwater | water the melts off a glacier |
| deflation | wind erosion that removes loose sediments and leaves behind coarser material |
| dunes | deposits found when wind blown particles pile up behind and obstacle |
| slump | a mass movement where one large mass of loose material moves down a slope |
| creep | type of mass movement that sometimes causes telephone poles to lean |
| deposition | the dropping of eroded material |
| chemical weathering | the breaking up of rocks due to a change in their chemical composition |
| striations | long,parallel scars in rocks caused by rocks being dragged over them by glaciers |
| erosion | the process that wears away surface material and carries them to a new location |
| abrasion | type of erosion caused by sand grains wearing away the surface of a rock |
| terminal moraine | a ridge of unsorted materials left behind when a glacier melts |
| loess | a thick deposit of fine wind blown sediments |
| rockslides | signs warning people about this type of erosion might be posted along roadways |
| mudflows | erosion that takes place in a relatively dry area after a heavy rain |
| outwash | material washed out of a glacier by meltwater |
| plucking | a type of glacial eroision where rock fragments are loosened,broken off, and carried away |
| continental glacier | a glacier that covers a vast area |
| mechanical weathering | the breaking apart of rocks without changing their chemical composition |
| volcanic mountains | mountains created by magma in the earth reaching the surface and forming a cone |
