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Rocks And Minerals
Term | Definition |
---|---|
properties | Characters you can observe |
Luster | How a mineral reflects light (shiny,dull) |
Color | Some minerals come in many colors and many have colors that are the same |
Streak | The color of the powder when a mineral is scratched |
Hardness | How easily it can be scratched,a "scratch text" is done to determine this |
Rock | Is made up of one of more minerals |
Igneous rocks | Form from melted materials that cool and harden |
Sedimentary rocks | Form in layers |
Metamorphic rocks | Form when other rock are changed by heat and pressure |
Three types of rocks | Igneous,sedimentary, and metamorphic |