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4Rocks and Minerals
Vocabulary Chapter 8
| Term | Definition |
|---|---|
| minerals | natural, nonliving crystals that make up rocks |
| luster | the way a surface reflects light |
| sediment | eroded material that settles at the bottom of lakes, rivers, and oceans |
| sedimentary rock | rock that forms when layers of particles cement together and harden |
| metamorphic rocks | rocks that have changed due to heat and pressure |
| igneous rocks | rocks that form when molten rock cools and hardens |