| A | B |
| fold mountain | A mountain made by rock layers folded and being
squeezed together. |
| fault-block mountain | A mountain made by huge tilted rocks |
| weathering | The breaking down of rocks by natural process. |
| erosion | Caused by wind, water and people. |
| soil | loose, weathered rock that can support the growth of rooted
plants. |
| humus | Material produced y breaking down plant and animal
remains. |
| soil horizon | Distint layers of soil. |
| groundwater | Water that is underground. |
| mass wasting | The downhill movement of Earth's material caused
by gravity. |
| deposition | The dropping off of particles. |
| glacier | Huge, moving sheets of ice. |
| till | Jumble of many sizes of sediment. |
| moraine | A deposit of many sizes of sediment from a glacier that
collects in front of or along the sides of a glacier. |