| A | B |
|---|
| El Nino | Is a disturbance of wind patterns and ocean currents in the pacific ocean. |
| Weathering | The process by which natural forces break down rocks. |
| Mechanical Weathering | The breaking up of rocks by physical forces. |
| Abrasion | Process of wearing down by friction, the rubbing of one object or surface against another. |
| Chemical Weathering | The breakup of rock by chemical reactions that change the rocks makeup. |
| Humus | The decayed organic matter in soil. |
| Desertification | The expansion of desert conditions in areas where the natural plant cover has been destroyed. |
| Erosion | The process in which sediment is picked up an moved from one place to another. |
| Deposition | The part of the erosion process which sediment is placed in a new locations or deposited. |
| Mass Wasting | The downhill movements of masses of rock and soil. |
| Isobar | A line on a weather map that shows areas of equal pressure |
