| A | B |
|---|
| depostion | when sediments are dropped back to the surface |
| Erosion | The movement of sediments from one place to another |
| Weathering | The breaking down of rocks into sediment |
| horizons | layers or zones of soil beneath the surface |
| Fossils | imprint of dead plant or animal remains in sedimentary rock |
| Sedimentary rock | the most common type of rock on Earth |
| Crust | outermost layer of the Earth where most life is found |
| Iron and Nickel | The two elements believed to compose the core |
