| A | B |
|---|
| Lithosphere | This cool solid layer includes the crust and uppermost part of the mantle. |
| Asthenosphere | This layer of the earth is flowing, but not completely liquid-plasticity is a name for this condition. |
| Crust, Mantle, Core | The three layers classified by their chemical makeup |
| Lithosphere, Asthenosphere, Mantle, Outer Core, Inner Core | The five layers of the earth when classified by their physical properties |
| Continental crust | The type of crust that lies under continents |
| Oceanic crust | The type of crust that lies under oceans |
| Convection | The circular flow of matter that rises as it is heated and then sinks as it cools |
| Basalt and Gabbro | The type of rock that makes up oceanic crust |
| Granite and Rhyolite | The type of rock that makes up continental crust |
| Seismic waves | Shock waves from an earthquake |
| Seismograph | The tool that scientists use to collect detect seismic waves |
| P wave | The type of seismic wave that travels in a back-and-forth movement of rock particles |
| S wave | That type of seismic wave that travels in an up-and-down movement. These waves do not move through liquids. |
| Refraction | The curving (of seismic waves) as they pass through rock of different densities |
| The Moho | The boundary between the crust and the mantle |
| Shadow Zone | A zone at which no earthquake waves can be detected |
