Across
- 2. chamber, the location beneath the vent of a volcano when magma is stored prior to eruption
- 4. an extremely hot liquid and semi-liquid rock under earth's surface
- 7. the point on the Earth's surface directly above the focus or hypocenter of an earthquake
- 8. place inside Earth's crust where an earthquake originates
- 10. a boundary in which two two plates are joining together
- 12. a method that uses distance information determined from three seismic stations to uniquely locate the earthquake
- 13. plates, gigantic pieces of the earth's crust and uppermost part of the mantle
- 16. a boundary in which two tectonic plates slide past each other horizontally
- 18. this action occurs whenever tectonic processes put stress on a rock, and the rock bends instead of breaking
- 19. a super continent predicted to have been broken apart millions of years ago to form the continents we know today
Down
- 1. waves triggered by large earthquakes that occur near or under the ocean
- 3. a number that characterizes the relative size of an earthquake
- 5. an instrument that measures and records details of earthquakes
- 6. a boundary in which two tectonic plates are being pulled apart
- 9. of fire, a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes
- 10. the outermost part of a shell of a terrestrial planet
- 11. a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action
- 14. a fraction or zone of fractures between two blocks of rocks
- 15. spot, a large plume of hot mantle material rising from deep within the earth
- 17. a rupture in the earth's crust which allows magma, ash, and gases to escape from beneath the surface