Across
- 5. fault Gravity fault
- 7. the action or process in plate tectonics of the edge of one crustal plate descending below the edge of another
- 9. boundary where the tectonic plates move toward eachother to form new mountains
- 11. to cut or clip
- 15. the reduction in volume and increase of pressure of the air
- 22. plates sections of the earth where the crust is split
- 24. a series of vibrations caused by tectonic plates rubbing against eachother
- 26. fault Opposite of a gravity fault
- 27. trenches a deep valley at the bottom of the ocean
- 28. Size; Extent
- 29. central point of attention
- 30. The act of stretching or straining
- 31. spreading The divergence at mid-ocean ridges of the teectonic plates underlying the oceans that is due to upwelling from the earths interior of magma which solidifies and adds to the spreading plates
- 32. A defect or imperfection
Down
- 1. to change somewhat the form or qualities
- 2. Scale a measure of earthquake intensity with 12 divisions ranging from 1 to 10
- 3. a land area having a relatively level surface considerably raised above adjoining land on at least one side, and often cut by deep canyons.
- 4. boundary where the tactonic plates move away from eachother to form new crust
- 6. tectonics A dozen of so of plates that make up the earths surface
- 7. fault A geologic fault in which the blocks of rock on either side of the fault slide horizontally,
- 8. boundary where the tectonic plates slide against eachother to create earthquakes
- 10. valley a subsea chasm extending along the crest of a mid-ocean ridge
- 12. Ridges an elecated region with a central valley on an ocean floor at the boundary between 2 diverging tectonic plates
- 13. a point, directly above the true center of disturbance
- 14. drift large-scale movement of the continents
- 16. magnitude scale a logarithmic scale of 1 to 10
- 17. Waves a longitudinal earthquake wave that travels through the interior of the earth and is usually the first conspicuous wave to reach a seismograph
- 18. Scale Used to rank earthquakes
- 19. any of various instruments for measuring and recording the vibrations of earthquakes.
- 20. Waves a transverse earthquake wave that travels through the interior of the earth and is usually the second conspicuous wave to reach a seismograph.
- 21. Hypothetical land area believed to have once connected all of earths land masses
- 23. Perserved from the past geological age
- 25. a record made by a seismograph.
- 31. Waves a seismic wave that travels along or parallel to the earth's surface