| A | B |
|---|
| seismic waves | Vibrations that travel through the Earth from earthquake |
| pressure | Force exerted on a surface divided by the area. |
| crust | Layer of rock that forms the outer surface |
| basalt | Dark, dense fine textured rockfound in the ocean crust |
| granite | light colored rock found in continental crust |
| mantle | Hot solid material between crust and core. |
| lithosphere | rigid upper part of mantle |
| asthenosphere | soft layer of mantle where lithosphere floats |
| outer core | molten iron and nickle that surrounds the inner core |
| inner core | solid iron and nickel sphere at the center of the Earth |
