| A | B |
|---|
| fault | surface of break in a section of rock |
| seismic waves | earthquake waves |
| seismograph | instrumennt used to obtain a record of seismic waves from all over the world |
| Richter magnitude | based on measurements of amplitude of seismic waves |
| tsunamis | seismic sea waves |
| seismic safe | building will stand up against the vibrations caused by most earthquakes |
| lava | magma that flows onto earth's surface through a vent |
| vent | opening |
| shield volcano | buildup of basaltic layers form a broad volcano with gently sloping sides |
| composite volcano | are steep-sided mountains composed of alternating layers of lava and tephra |
| rifts | long crack that forms between tectonic plates moving apart at plate boundaries |
| hot spots | large, rising body of magma that can force its way through Earth's mantle and crust and may form volcanoes |
| an example of cinder cone volcano | Sunset Crater |
| an example of a composite volcano | Mount Rainier, Washington |
| cinder cone volcano | relatively small volcano formed by moderate to explosive eruptions of tephra |
| volcano | cone-shaped hill or mountain formed when hot magma, solids, and gas erupt onto Earth's surface through a vent |
| earthquakes | large vibrations that move through rock or other Earth materials |
| What are earthquakes a result of? | elastic rebound |
| Where do seismic waves begin? | focus |
| What are the most destructive seismic waves? | surface |
