EARTH SCIENCE CROSSWORD

5. A geological feature that results from a subduction zone
6. Is a type of fracture between two blocks of rock
8. A layer of the earth where most life is found
9. OCEAN- The largest example of ocean basin.
10. characterized as the undulation or waves in the stratified rocks of Earth’s crust.
11. A type of angular fold with straight limbs and small hinges
14. Measurements of ocean depths and the charting of the shape or topography of the ocean floor.
17. The kind of boundary that occurs in sea-floor spreading
18. VALLEY- Is a central valley formed at the summit of the oceanic ridges as the molten materials continuously flow out from the ridges.
19. Is a type of deformation where there are alternatively higher temperatures and pressure.

1. type of dip-slip fault in which the block above the fault has moved downward relative to the block below.
2. Is the circulation of material caused by the differences in density. It occurs between the core and mantle or even between the asthenosphere and lithosphere.
3. A layer of the earth that continues on churning due to convection within the earth
4. Ultrafine-grained glassy-looking fragment, usually black and flinty in appearance, occurring as thin planar veins, injection veins or as a matrix to pseudo conglomerates or breccia, which in-fills dilation fractures in the host rock.
7. A type of plate movement that occurred in SAN ANDREAS FAULT
11. A type of margin that submerged outer edge of the continent where continental crust transitions into oceanic crust.
12. A feature of the ocean characterized by narrow shelf and slope that descends into a trench or trough.
13. A fault rock which is cohesive and characterized by a well-developed planar fabric resulting from tectonic reduction of grain size, and commonly containing rounded porphyroclasts and rock fragments of similar composition to minerals in the matrix.
15. A type of plate boundary that forms mountain range like the Himalayan range.
16. HESS- An American geophysicist in 1960.