Across
- 3. tectonics the theory that earth’s outer layer is made up of large;the theory explains how plate interact and how those interaction relate to process such as earthquake mountains and buildings
- 5. boundary the boundary between tectonic plates that are sliding past each other horizontally
- 7. the strong lower part of the mantle between the asthenosphere and the outer core
- 8. the layer of rock between the Earth’s crust and core
- 9. the location within Earth along a fault at which the first motion of the object; force has size and direction
- 10. a movement of trembling of the ground that is caused by a sudden release of energy when rocks along a fault move
- 12. the thin layer and solid outermost layer of earth above the mantle
- 15. the solid outer layer of Earth that consists of the crust and the rigid upper part of the mantle
- 16. plate a block of lithosphere that consist of the crust and the rigid,outermost part of the mantle
- 19. current any movements of matter that results from differences in density;may be vertical,circular,or cyclical
- 20. drift the hypothesis that a single large landmasses to form the continents,which then drifted to their present locations;the movement of continents
- 22. the point on Earth’s surface directly above an earthquake's starting point,or focus
- 23. the central part of Earth below the mantle
- 24. reversal the process by which Earth’s magnetic north pole and magnetic south pole switch positions periodically;a change in the direction
Down
- 1. rebound the sudden return of elastically deformed rock to its undeformed shape
- 2. the soft layer of the mantle which the tectonic plates move
- 4. the bending,tilting, and breaking of Earth’s crust;the change in the shape of rock in response to stress
- 6. the process by which one lithospheric plate moves beneath another plate as a result of tectonic forces
- 9. a break in a body of rock along which one block moves relative to another
- 11. a system of ideas that explains many related observations and is supported by a large body of evidence acquired through scientific investigation
- 13. boundary the boundary between two tectonic plates that are moving away from each other
- 14. a boundary between two or more plates
- 17. boundary the boundary between tectonic plates that are colliding
- 18. floor spreading the process by which new oceanic lithosphere forms when magma rises to Earth’s surface at mid-ocean ridges and solidifies,as older,existing seafloor moves away from the ridges
- 21. plate a block of lithosphere that consists of the crust and the rigid, outermost part of the mantle