| A | B |
|---|
| weathering | breaking up of rock into smaller pieces |
| causes of weathering | wind, rain, ice, roots, heat, water |
| erosion | movement of sediment from its original source |
| two main causes of erosion | wind and flowing water |
| sediment | pieces of broken rock and minerals |
| deposition | the laying down of sediment |
| delta | formed when sediment spreads out at the mouth of a river |
| two types of weathering | chemical and physical |
| 3 examples of physical weathering | ice wedging; wind blasting; root intrusion |
| 2 examples of chemical weatherin | acid rain from pollution; acids from plant roots |
| type of sedimentary rock containing sea shells | limestone |
| type of sedimentary rock made of sand | sandstone |
| caused by heat and pressure | metamorphic rock |
| why metamorphic rock doesn't melt | extreme pressure |
| caused by cooled molten rock | igneous rock |
| brings metamorphic or igneous rock to the surface | uplift |
| can cause sedimentary rock to be pushed down | subduction |
| mineral | natural, solid, non-living, crystal |
| top layer of geologic column | youngest |
| bottom layer of geologic column | oldest |
