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Science Unit D Ch 2

Chapter 2 Vocabulary

mineral A natural, solid substance that has a definite chemical composition and physical structure.
magma Melted rock within the Earth.
igneous rock A rock formed when magma or lava cools and hardens.
lava Magma that reaches the Earth's surface.
weathering The process of breaking rock into smaller pieces.
erosion The movement or transportation of sediments to new locations.
deposition The dropping of sediment from wind or water that slows down, or from ice that melts.
sedimentation The process of building up layers of sediment over millions of years.
cementation The gluing together of particles of sediment.
clastic rock One group of sedimentary rocks that is made of sediments that were weathered, transported, and deposited in layers.
chemical rock One of a group of sedimentary rocks that is made from minerals that were dissolved in water, came out of solution, and were then deposited.
metamorphism The process by which any kind of rock is changed into metamorphic rock.
rock cycle A process by which rocks are formed from one another.
Created by: mquay