| vocabulary word |
 |
|
| definition |
|
|
| 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 |
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