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chapter 9 vocab

5 ATHENA ch 9 Scott Foresman 2008

vocabulary worddefinition
crust the outermost and thinnest layer of Earth's layers
mantle the layer of Earth between the crust and core
core the center part of Earth which includes the liquid outer core and solid inner core
plate a large section of Earth's crust and upper mantle
mechanical weathering the breaking down of rocks into smaller pieces by any physical force such as gravity, water, wind, ice, or living organisms
chemical weathering changing of materials in a rock by chemical processes
igneous rock type of rock formed when lava or magma cools and hardens
sedimentary rock type of rock formed when sediments are pressed and cemented together
metamophic rock a type of rock formed when existing rock is heated at high pressures and temperatures
Created by: bgagnon
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