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ch3 rocks
prentice hall earth science
| Question | Answer |
|---|---|
| what is the rock cycle | interactions among earth's water, air and land can cause rocks to change from one type to another |
| what is a rock | any solid mass of mineral or mineral-like matter that occures naturally |
| what are the three main types of rocks | igneous, sedimentary, and metamorphic |
| what is weathering | process in which rocks are physically and chemically broken down. |
| what is intrusive igneous rocks | rocks that form when magma hardens beneath the earths crust |
| what is extrusive igneous rocks | the rocks that form when magma hardens |
| what is course-grained texture | slow cooling that results in large crystals |
| what is fine-grained texture | rapid cooling that results in small crystals |
| what are clastic sedimentary rocks | rocks that are made of weathered bits of rocks and minerals |
| what are chemical sedimentary rocks | forms when dissolved minerals precipitate from water solutions |
| what is contact metamorphism | hot magma moves into rock |
| what is regional metamorphism |