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geology

Alyssa Ybarra

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Across
3.the material that forms Earth's hard surface
5.a usually light colored rock that is found in the continental drift
6.a section of the lithosphere that slowly moves over the athenosphere, carrying pieces of continental and oceanic crust
7.the block of rock that forms the lower half of the fault
10.a break or crack in the Earth's lithosphere along which rocks move
11.a rigid layer made up of the upper most part of the mantle and the crust
13.a weak spot in the crust where magma has come to the surface
16.the process by which oceanic crust sinks beneath a deep ocean trench and back into the mantle at a convergent plate boundary
17.the preserved remains or traces of living things that lived in the past
18.a scientist who studies the force that makes and shapes the Earth
19.a deep valley that forms where two plates move toward each other
22.deep valley along the ocean floor through which oceanic crust slowly sinks toward the mantle
24.an area where magma from deep within the mantle melts through the crust above it
25.the process by which molten material adds new oceanic crust to the ocean floor
26.a plate boundary where two plates move toward each other
28.a type of fault where rocks on either side move past each other side ways with little up and down motion
30.a dense ball of solid metal at the center of Earth
31.the under sea mountain chain where new ocean floor is produced; a divergent plate boundary
32.the force exerted on a surface divided by the total area which the force is exerted
33.the theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle
36.a change in the volume or shape of the Earth's crust
37.the shaking that results from the movement of rock beneath Earth's surface
38.a plate boundary where two plates move past each other in opposite directions
39.the layer of hot, solid materials between Earth's crust and core
Down
1.dark dense igneous rock with a fine texture found in the oceanic crust
2.the study of solid earth
4.a mountain that forms where a normal fault uplifts a block of rock
8.a layer of molten iron and nickel that surrounds the inner core at Earth
9.the measurement of how much mass is contained in a given volume of a substance
12.the block of rock that lies above an inclined fault or an ore body
14.a sinking or subsiding of a land surface as a result of geologic processes or of human activities
15.a type of fault where the hanging wall sides upwards; caused by compression in the crust
20.a plate boundary where two plates move away from each other
21.the soft layer of the mantle on which the lithosphere floats
23.the hypothesis that the continents slowly move across Earth's surface
27.a type of fault where the hanging wall sides downward; caused by tension in the crust
29.the layer of hot, solid materials between Earth's crust and core
34.a force that acts on rock to change its shape or volume
35.the name of the single landmass that broke apart 225 million years ago and gave rise to todays continents

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