Rocks
Terms
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- lava
- molten rock from a volcano flowing onto the earths surface
- 2 types of igneous rocks
- intrusive rocks and extrusive rocks
- intrusive igneous rocks
- rock that forms below earths surface (they are found on earths surface when forces in the earth push them up or when rock and soil covering them are removed)
- 3 types of rocks
- igneous, sedimentary, and metamorphic
- extrusive igneous rocks
- rocks formed when lava cools oin or near earths surface (have a fine-grained texture. Do not have time to arange into large crystals)
- mineral
- a naturally occuring inorganic solid with a definite structure and compositiion
- rock
- a mixture of minerals, mineraloids, glass, or organic matter
- magma
- hot, melted rock material beneath earths surface
- mineraloid
- when atoms of a sentence are not arranged in a definite structure
- igneous rocks
- formed when molten material from volcano or from deep inside the earth cools
- mixture
- when substances are mixed together but each retains its properties
- rock formation processes
- weathering, erosion, compaction and cementation, melting and cooling, and heat and pressure
- 5 things minerals have in common
- all minerals are formed by natural processes, minerals are inorganic, minerals are solids, every mineral is an element or compound with a chemical composition unique to that mineral, and the atoms in a mineral are arranged in a pattern that is repeated over and over again