| A | B |
|---|
| 3 main layers of the Earth | crust, mantle, core |
| One hypothesis states that plate movement results from convection currents in the: | asthenosphere |
| A divergent boundary occurs where two plates: | move away from each other |
| seismic waves | The breakage of rocks along a fault line releases energy in the form of |
| subduction | A zone where oceanic crust dives beneath continental crust |
| Earthquakes occur mostly | at plate boundaries |
| Sedimentary rocks are the only rocks that can potentially contain | fossils |
| principle superposition is used to | determine the relative age of rocks |
| Richter Scale | expresses the magnitude of earthquakes |
| water | The most effective agent of physical weathering and erosion |
| Waves that cause the most damage are: | Surface Waves |
| Igneous rock forms from | magma and lava |
| three | The minimum number of seismograph stations necessary to determine the location of an earthquake’s epicenter |
| mineral | occurs naturally, is an inorganic solid, has a definite chemical composition and crystal structure |
| Scientists can calculate the distance from the seismograph station to the focus using | the differences in arrival times of P and S waves |
| Diamond | What is the Earth's hardest mineral? |
| A convergent boundary occurs where two plates: | move toward each other |
| Sheild, cinder, composite | 3 main types of volcanoes |
| Limestone morphs into | marble |
| Density | Mass divided by volume |
