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Rocks and Minerals

Definitions

TermDefinition
Geologist A person who studies the earth, including rocks and minerals.
Crust The outer layer of a planet
Mantle The next layer of the Earth after the crust
Outer Core A liquid layer that is after the mantle
Inner Core is the solid center and hottest part of the Earth.
Rocks A natural, solid object made of one or more different minerals.
Minerals The basic ingredient of rocks.
Igneous Rocks Rocks that form when melted rock (magma) cools and hardens above ground or underground.
Sedimentary Rocks Rocks that form when layers of sediment are pressed and cemented together over time.
Metamorphic Rocks Rocks that form when other rocks are heated and squeezed together inside the earth.
Magma Melted rock found inside the earth.
Lava Melted rock that flows onto the earth.
Molten Melted by very great heat
Sediment Tiny pieces of rocks, shells, sand and clay that pile up on the bottom of lakes and oceans.
Weathering When a rock or mineral breaks into smaller bits or pieces
Erosion When smaller pieces of rock get carried away by water or wind
Fossil Any rock whose shape reveals information about ancient plants, animals, or other organisms
Created by: lmrodgers
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