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Cooper ~ Rocks
Stack #127808
| Question | Answer |
|---|---|
| Rock | A mixture of such minerals, rock fragments, volcanic glass, organic matter, or other natural materials. |
| Rock Cycle | A model created by scientists to show how rocks change over time. |
| Igneous Rock | The type of rock magma forms when it cools and hardens. |
| Lava | After magma has reached Earth's surface |
| Intrusive | Rocks that form from magma below the surface |
| Extrusive | Igneous rocks that are formed as lava cools on the surface of Earth. |
| Basaltic | Igneous rocks that are dense, dark-colored, and form from magma that is rich in iron and magnesium but is poor in silica. |
| Granitic | Igneous rocks that are light-colored rocks of lower density than basaltic rocks. |
| Metamorphic Rocks | Rocks that have changed because of changes in temperature and presssure or the presence of hot, watery fluids. |
| Foliated | When minerals line up in parallel layers. |
| Nonfoliated | The mineral grains that grow and rearrange but they don't form layers. |
| Sediments | Loose minerals such as rock fragments, mineral grains, and bits of shell that have been moved by wind, water, ice, or gravity. |
| Sedimentary Rock | Forms when sediments are ressed and cemented together, or when minerals form from solutions. |
| Compaction | If the sediments are small, they can stick together and form solid rock. |
| Cementation | Occurs when minerals such as quartz, calcite, and hematite are deposited between the pieces of sediment. |