| A | B |
|---|
| temperature | 温度 measure of how warm or cold of an object with reference to some standard value |
| exfoliation | 剥落reaking off of curved sheets parallel to a rock's surface due to weathering |
| weathering | 风化 breaking down of rocks and other materials on earth |
| frost action | 结冰造成岩石裂开 breaking apart of a rock caused by the water freezing and expanding within cracks |
| root-pry | 树根撑裂岩石 breaking apart of rocks caused by the growth of roots |
| animal action | 动物挖洞造成风化 animals dig holes or do something that causes weathering |
| gravity | 引力 force of attraction between objects |
| landslide | 山崩 large downhill movement of loose rocks and soil caused by the gravity |
| abrasion | 岩石互相碰撞 Rock hitting rock. |
| chemical weathering | 化学风化 weathering involves changes in the chemical make up of rocks. Rocks change into different things in the acid rain. |
| mechanical weathering | 物理风化：不改变岩石化学成分 doesn't involve changes in the chemical makeup of rocks. Physical weathering |
