| A | B |
|---|
| crust | the outermost and thinnest layer of the earth |
| mantle | the layer of the earth between the crust and the core |
| core | the center part of the earth which includes the outer core and the 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 | the 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 |
| metamorphic rock | type of rock formed when existing rock is heated at high pressures and temperatures. |
| tension | where two plates slide apart from each other |
| compression | where two plates come together and collide |
| shear | where two plates slide past each other |
| earthquake | a vibration of the ground caused by a release of energy |
| erosion | the movement of weathered particles from place to place |
| deposition | when sediments are dropped in a new place |
| weathering | when rocks are broken down into tiny pieces. |
| ice wedging | when water freezes in a crack, then expands and eventually cracks the rock |
| mineral | a nonliving solid material found on or in earth |
| rock | a natural solid that is usually a mixture of minerals |
| soil | a mixture of loose material that covers much of earth's surface |
