| A | B |
|---|
| Geologist | person who studies the Eearth |
| Weathering | break up of rocks into smaller pieces |
| erosion | break up of rocks into smaller peices and then the carrying away of the peices to another place |
| chemical weathering | break down of rocks by chemicals (acid rain) |
| mechanical weathering | break down of rocks by a physical force (gravity, ice, snow, glacier, water) |
| biological weathering | break up of rocks by biotic things (tree roots, animals, plants) |
| ice (frost) wedging | freezing of water in cracks that eventually breaks rocks apart |
| acid rain | rain that has is acidic (a low pH) |
| meanders | turns in a river |
| ox-bow lakes | a section of river that has been cut off becuse the river takes a new path |
| rock | a mixture of different minerals |
| mineral | a pure substance |
| streak | mark left behind after a rock is swiped accross a tile |
| hardness | the ability of one rock to scratch another |
| luster | the shine of a rock |
| Moh's hardness scale | scale used to determine which rock is harder than another rock |
| rock cycle | continual proccess of rocks changing from one rock type to another |
| slate | metamorphic rock from sedimentary shale |
| schist | meta morphic rock with flakes of mienrals in it |
| shale | metamorphic rock from shale |
| sedimentation | the cementation of sediments |
| sediemntary | rock formed from other rock peices cemented together in layers |
| metamorphic | rock formed from lots of heat and pressure on igneous or sedimentary rock |
| igneous | rock formed form liquid (molten) rock |
| extrusive | igneous rock formed above the earth's surface |
| intrusive | igneous rock formed below the earth's surface |
| sediments | bits and peices of rock in one area |
| magma | liquid rock below the earth's surface |
| lava | liquid rock above the earth's surface |
| beds | layers of rock (mostly horizontal) |
| molten | liquid |
| mudstone | sedimentary rock made from the hardening of mud |
| sandstone | sedimentary rock made from hardening of sand pieces |
| parent rock | the rock that was used to make a metamorphic rock |
