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Rocks and minerals
Question | Answer |
---|---|
Rock | A solid material made of one or more minerals |
Mineral | Solid, from nature, 1 or more makes a rock |
Igneous rocks | Created when lava cools and hardens |
Sedimentary Rocks | Formed in layers over time- fossils can be found here |
Metamorphic Rocks | Rocks that are formed by heat and pressure |
Fossil | The remains of once living things found in rocks |
Properties of minerals | Color, luster, hardness, streak |
Luster | How a mineral reflects light |
Streak | A test used to determine true color of some minerals |
Hardness | Description of how or if a mineral can scratch another substance; Mohs Hardness Scale is used |