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ILS 2012- Geology
| Question | Answer |
|---|---|
| Geology | study of Earth’s composition, structure, and history |
| Continental Plates | made of crust and lithosphere |
| Main Layers of the Earth | Outside in: crust, mantle, core |
| Mineral | naturally occurring, inorganic solid with a crystal structure, and characteristic chemical composition |
| Rock classification | igneous, metamorphic, or sedimentary |
| Metamorphic | formed by intense heat and pressure |
| Rock Cycle | a series of processes in which rocks are changed from one type to another |
| Sedimentary rock | formed by compaction and cementation |
| Mid | ocean ridges |
| Subducting plates | more dense, forms trench |
| Convection currents | cycle of heating and cooling in the mantle |
| Small crystal igneous rocks | cool quickly, fine grained |
| Large crystal igneous rocks | cool slowly, coarse grained |
| Porphytic | mixture of small and large crystals |
| Streak | powder form of the material |
| Luster | light reflecting off the material |
| Cleavage | angle at which the mineral breaks |
| Crystal shape | due to internal atomic structure |
| Color | changes due to impurities |
| Hardness | ability to scratch another material |
| Density | mass to volume ratio |
| Reactivity | reaction to an acid |
| Divergent | plates move away, mid |
| Convergent | plates move towards each other, subduction zones |
| Transform boundary | slide past each other, faults |
| Rock cycle diagram | identify types of rocks and processes that form them |
| Subduction diagram | process occurring at different points, types of boundaries |
| Layers of rock diagram | relative age of rocks, |