| A | B |
|---|
| mechanical weathering | weathering that doesn't involve changes in the chemical makeup of rocks. Physical weathering |
| temperature | a measure of how warm or cold of an object with reference to some standard value |
| exfoliation | breaking off of curved sheets parallel to a rock's surface due to weathering |
| weathering | breaking down of rocks and other materials on earth |
| frost action | breaking apart of a rock caused by the water freezing and expanding within cracks |
| root-pry | breaking apart of rocks caused by the growth of roots |
| animal action | Animals dig holes or do something that causes weathering |
| gravity | force of attraction between objects |
| landslide | a large downhill movement of loose rocks and soil caused by the gravity |
| abrasion | Rock hitting rock. |
| chemical weathering | weathering that involves changes in the chemical make up of rocks. Rocks change into different things in the acid rain. |
