Across
- 5. a graphical illustration of seismic waves
- 7. a scientist who studies earthquakes
- 9. molten rock below Earth's surface
- 10. a seismic wave, also called an S-wave, that causes particles to move up and down at right angles relative to the direction the wave travels
- 12. a liquid's ability to flow
- 14. the vibrations in the ground that result from movement along breaks in the Earth's lithosphere
- 15. the location on Earth's surface directly above an earthquake's focus
- 17. a vent in Earth's crust through which melted or molten rock flows
- 18. a seismic wave that causes particles in the ground to move up and down in a rolling motion
- 20. a small, steep sided volcano that erupts gas rich lava
Down
- 1. tiny particles of pulverized volcanic rock and glass
- 2. a large volcano with gentle slopes of basaltic lava that is common along divergent plate boundaries and oceanic hot spots
- 3. an instrument that measures and records ground motion and can be used to determine the distance seismic waves travel
- 4. a volcano that is not associated with plate boundaries
- 6. energy that travels as vibrations on and in Earth
- 8. a seismic wave, also called a P-wave, that causes particles in the ground to move in a pull-push motion similar to a coiled spring
- 11. a large steep seed volcano that results from explosive eruptions of lava and ash along convergent plate boundaries
- 13. a break in Earth's lithosphere where one block of rock moves toward, away from, or past another
- 16. molten rock that erupts onto Earth's surface
- 19. a location inside Earth where rocks first move along a fault, starting seismic waves