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