plate tectonics chapter 9
Across
- 2. cone small, steep-sided volcanoes that erupt gas-rich, basaltic lavas
- 4. scientists that study earthquakes
- 6. waves cause particles in the ground to move up and down in a rolling motion
- 7. wave also called s-waves, they caused particles to move up and down at right angles relative to the direction the wave travels
- 10. the location on Earth's surface directly above the earthquake's focus
- 12. are the vibrations in the ground that result from movement along breaks in Earth's lithosphere
- 13. molten rock that erupts onto Earth's surface
- 15. a liquid's resistance to flow
- 17. a vent in Earth's crust through which melted-or molten- rock flows
Down
- 1. a break in Earth's lithosphere where one block of rock moves toward, away from, or past another
- 2. volcano large, steep-sided volcanoes that result from explosive eruptions of andesitic and rhyolitic lava and ash along convergent plate boundaries
- 3. measures and record ground motion and can be used to determine the distance seismic waves travel.
- 5. wave energy that travels as vibrations on and in Earth
- 6. volcano common along divergent plate boundaries and oceanic hot spots
- 8. ash tiny particles of pulverized volcanic rock and glass
- 9. wave also called p-waves, caused particles in the ground to move in a push-pull motion similar to a coiled spring
- 11. a graphical illustration of seismic waves
- 14. spot Volcanoes that are not associated with plate boundaries
- 16. these waves originate where rocks first move along the fault, at a location inside Earth