| A | B |
|---|
| igneous rock | intrusive or extrusive rock formed when hot magma cools and hardens. |
| metamorphic rock | forms when heat, pressure, or fluids act on igneous, sedimentary, or other metamorphic rock and affect its form or composition, or both |
| sedimentary rock | forms when sediments are compacted and comented together or when minerals come out of solution or are left behind by evaporation |
| rock cycle | model that describes how rocks slowly change from one form to another through time |
| extrusive | fine-grained igneous rock that forms when magma cools quickly at or near Earth's surface |
| intrusive | a type of igneous rock that generally contains large crystals and form when magma cools slowly beneath Earth's surface |
| lava | thick, gooey, molten rock material flowing from volcanoes onto Earth's surface |
| magma | hot, melted rock material beneath Earth's surface |
| foliated | metamorphic rock, such as slate and gneiss, whose mineral grains flatten and line up in parallel layers |
| nonfoliated | metamorphic rock, such as quartzite and marble, whose mineral grains grow and rearrange but do not form layers |
| granitic | light-colored, silica-rich igneous rock that is less dense than basaltic rock |
| andesitic | extrusive igneous rocks that have mineral compositions between those of granitic and basaltic rocks. |
| basaltic | extrusive igneous rocks |
| rock | mixture of one or more minerals, volcanic glass, organ |
