| A | B |
|---|
| rocks | are hard substance composed of one or more minerals or minerallike substances |
| igneos | formed from molten rock |
| sedimentry | formed by the compacting and cementing of sediments or by other non-igneos processes at the earths surface |
| metamorphic | form when chemical reactions, trmendous heat, and/or great pressure change existing rocks into new kinds of rocks |
| rock cycle | is the continuous changing of rocks from one kind to another over long periods of time |
| extrusive | an igneous rock formed from lava and crystallized at the surface of the earth |
| intrusive | an igneous rock formed from magma |
| organic rocks | a sedimentry rock that is formed either directly or indirectly from material that was once alive |
| chemical rocks | a non-clastic sedimentary rock formed by inorganic processes such as evaporation |
| metamorphism | is the changing of one type of rock to another as a result of heat, pressure, and/or chemical reactions |
| clastic rocks | a sedimentary rock formed from fragments of existing rocks |
| magma | molten rock beneath the earth's surface |
