| A | B |
|---|
| erosion | movement of rock, sand, soil etc. |
| weathering | the breakdown of rock |
| deposition | occurs when rocks or sand are dropped |
| sediments | made from weathering and erosion |
| sedimetary rocks | made from compaction and cementation |
| compaction | when pieces of rock or shell are squeezed together |
| cementation | when pieces of rock or shell are "glued" together |
| metamorphic rock | forms from great amounts of pressure and heat (with no melting) |
| igneous rock | forms from melting and cooling |
| quartz | a mineral with a hardness of 7 |
| diamond | a mineral with a hardness of 10 |
| rock | a mixture of minerals |
| Wegener | came up with the theory of continental drift |
| compression | when tectonic plates are squeezed together |
| tension | when tectonic plates are pulled apart |
