| A | B |
|---|
| landscape | A wide variety of surface features, such as hills, valleys, and rivers |
| landforms | Part of the Earth's surface that has a unique shape, easily recognized, created by nature |
| cataclysmic events | floods, volcano eruption, earthquake |
| geology | study of the earth and its history |
| William Smith | mapped the layers of rock beneath the earth's surface |
| coal | black rock formed by dead plants and animals |
| ammonites | A kind of fossilized snail used to identify rock layers |
| Ethelred Bennett | Early woman geologist |
| sediment | Sand, silt, soil, and rocks carried along by water |
| abrasion | Grinding down of one rock by another |
| erosion | Process by which gravity, water, ice, and wind move sediment |
| weathering | The breaking down of rocks into smaller pieces |
| deposition | Process by which water, wind, or ice build up the earth's surface by dropping sediment |
| gravity | The force that attracts all objects toward the center of the Earth |
| glaciers | Large, long-lasting mass of moving ice and snow |
