| A | B |
|---|
| Sedimentary Rock | Forms in Layers; Above Ground |
| Fossil | Decayed Remains of plants and animals |
| Sediment | Bits and pieces of rock |
| Weathering | Breaks rocks into smaller pieces |
| The Sun | Provides energy for sedimentary rocks to form |
| Superposition | Oldest Layers on bottom; youngest on top |
| Fossils are Important | Because they tell how the environment has changed. |
| Compact and cement | Sediments are stuck and glued together |
| Youngest Layer | Near the top of a rock sequence |
| Oldest Layer | Bottom of a rock sequence |
