| A | B |
|---|
| igneous rock | intrusive or extrusive rock that is produced when melted rock from inside earth cools and hardens |
| extrusive | type of igneous rock that has small or no crystals and orms when melted rock cools quickly on Earth's surface |
| intrusive | type of igneous rock that generally contains large crystals and forms when magma cools slowly beneath the earth's surface |
| nonfoliated | describes metamorphic rocks that lack distinct layers or bands |
| sedimentary rock | made from pieces of other rocks, dissolved minerals, or plant and animal matter that collect to form rock layers |
| metamorphic rock | new rock that is formed when existing rock is heated or squeezed |
| foliated | metamorphic rocks with visible layers of minerals |
| rock cycle | diagram that show the slow, continuous process of rocks changing from one type of another |
