| A | B |
|---|
| rock cycle | model that describes how rocks slowly change |
| erosion | the movement or transportation of sediment to a new location |
| igneous rock | a rock formed when magma or lava cools and hardens |
| magma | melted rock within the Earth |
| lava | magma that reaches the Earth's surface |
| basaltic | describes dense, dark-colored igneous rock formed from magma rich in magnesium and iron and poor in silica |
| intrusive | a type of igneous rock that generally contains large crystals and forms when magma cools slowly beneath Earth's surface |
| extrusive | describes fine-grained igneous rock that forms when magma cools quickly at or near Earth's surface |
| foliated | describes metamorphic rock whose mineral grains line up in parallel layers |
| nonfoliated | describes metamorphic rock,whoe mineral grains grow and rearrange but generally do not form layers |
| granitic | describes generally light-colored silica-rch igneous rock that is less dense than basaltic rock |
| compaction | process that forms sedimentary rocks when layers of sediments are compressed by the weight of the layers above them |
| rock cycle | model that describes how rocks slowly change from one to another through time |
| sedimentary rock | formed by the process of compaction and cementation |
| cementation | sedimentary rock-forming process in which sediment grains are held together by natuarl cements that are produced when water moves through rock and soil |
