Across
- 3. a seismic seismic wave that is trapped near the surface of the earth.
- 6. liquid, iron-nickel layer of the Earth between the solid inner core and lower mantle
- 8. the movement of continents resulting from the motion of tectonic plates.
- 9. the change of shape, without change of volume
- 10. a current in a fluid that results from convection.
- 12. a massive, irregularly shaped slab of solid rock
- 15. a force developed in a rope, string, or cable when stretched under an applied force.
- 16. a fracture or zone of fractures between two blocks of rock
- 18. a type of fine-grained natural soil material containing clay minerals.
- 22. A tectonic boundary where two plates are moving away from each other and new crust is forming from magma that rises to the Earth's surface between the two plates.
- 25. a large natural elevation of the earth's surface rising abruptly from the surrounding level
- 28. a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.
- 30. a force that squeezes something together
- 33. an elastic wave generated by an impulse such as an earthquake or an explosion
- 34. the rigid outer part of the earth, consisting of the crust and upper mantle.
Down
- 1. the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
- 2. the formation of new areas of oceanic crust, which occurs through the upwelling of magma at midocean ridges and its subsequent outward movement on either side.
- 4. the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur
- 5. describes the outermost shell of a terrestrial planet
- 7. a low area of land between hills or mountains, typically with a river or stream flowing through it.
- 11. the mostly-solid bulk of Earth's interior.
- 13. occurs when plates move towards each other and collide
- 14. it's what happens when two blocks of the earth suddenly slip past one another.
- 17. a supercontinent that incorporated almost all the landmasses on Earth
- 19. long, narrow depressions on the seafloor that form at the boundary of tectonic plates
- 20. a plate boundary along which the relative motion between the two plates is parallel to the strike of the fault
- 21. dark, organic material that forms in soil when plant and animal matter decays
- 23. a hot, dense ball of (mostly) iron
- 24. a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes
- 26. Rich, friable (crumbly) soil with nearly equal parts of sand and silt, and somewhat less clay.
- 27. The unconsolidated mineral or organic material on the immediate surface of the Earth that serves as a natural medium for the growth of land plants.
- 29. a long high sea wave caused by an earthquake, submarine landslide, or other disturbance.
- 31. is a seismic body wave that shakes the ground back and forth perpendicular to the direction the wave is moving.
- 32. primary wave or pressure wave