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Rocks
For last Science test of the year.
Term | Definition |
---|---|
Igneous Rock | formed from molten rock cooling on the Earth's surface. |
Extrusive Rock | Igneous Rocks that cool on the Earth's surface. cools really fast crystals/grains are small and tiny |
Intrusive Rock | Igneous Rock that cool below the Earth's surface. cools really slow and the crystals/grains are really big and large |
Sedimentary Rock | rocks formed from sediments into rocks on the earth's surface |
clastic | older sedimentary rocks that break down and compact togehter |
organic | rock that are made by the remains of dead plants, animals and shells |
chemical | minerals that come out of a solution and crystallize into a rock |
horizontal layering | different layers of old rocks on top of each other |
permanant ripple marks |