Puzzle 20131203975556

en CR 20 Alfred Wegener: German polar researcher, geophysicist, meteorologist; known for theory of continental drift. Asthenosphere: Region below the lithosphere. Continental Drift: The lateral movement of continents resulting from the motion of crustal plates. Convection Current: Transfer of heat by the mass movement of heated particles into an area of cooler fluid. Convergent Boundary: Major geologic discontinuity or surface marking the juncture of lithospheric plates that have been joined by plate tectonics. Divergent Boundary: A linear feature that exists between two tectonic plate. Faults: A surface along which rocks move when they pass their elastic limit and break. Glossopteris: Largest and best-known genus of the extinct order of seed ferns. Gondwanaland: A hypothetical landmass in the Southern Hemisphere. Harry Hess: One of the "founding fathers" of plate tectonics. Laurasia: A hypothetical landmass in the Northern Hemisphere. Lithosphere: Rigid layer of Earth about 100 kilometers thick. Mantle: The portion of the earth, about 1800 miles thick, between the crust and the core. Mesosaurus: An extinct genus of reptile from the Early Permian of southern Africa and South America. Mid Ocean Ridge: Any of several seismically active submarine mountain ranges that extend through the Atlantic, Indian, and South Pacific oceans: each is hypothesized to be the locus of seafloor spreading. Pangaea: The hypothetical landmass that existed when all continents were joined, from about 300 to 200 million years ago. Plate: In the theory of plate tectonics, one of the sections of the earth's lithosphere, constantly moving in relation to the other section. Plate Tectonics: A theory of global tectonics in which the lithosphere is divided into a number of crustal plates. Rift Valley: A subsea chasm extending along the crest of a mid-ocean ridge, locus of the magma upwellings that accompany seafloor spreading. Sea Floor Spreading: A process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out. Strike Slip Fault: A fault in which rock strata are displaced mainly in a horizontal direction, parallel to the line of the fault Transform Boundary: Is known as a conservative plate boundary since these faults neither create nor destroy lithosphere.

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Across:

2.	Rigid layer of Earth about 100 kilometers thick.
5.	The hypothetical landmass that existed when all continents were joined, from about 300 to 200 million years ago.
6.	German polar researcher, geophysicist, meteorologist; known for theory of continental drift.
10.	An extinct genus of reptile from the Early Permian of southern Africa and South America.
15.	A surface along which rocks move when they pass their elastic limit and break.

16.	A hypothetical landmass in the Northern Hemisphere.
17.	In the theory of plate tectonics, one of the sections of the earth's lithosphere, constantly moving in relation to the other section.
18.	A linear feature that exists between two tectonic plate.
19.	A subsea chasm extending along the crest of a mid-ocean ridge, locus of the magma upwellings that accompany seafloor spreading.
20.	Region below the lithosphere.

Down:

1.	A process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out.
3.	Is known as a conservative plate boundary since these faults neither create nor destroy lithosphere.
4.	One of the "founding fathers" of plate tectonics.
7.	Largest and best-known genus of the extinct order of seed ferns.
8.	The lateral movement of continents resulting from the motion of crustal plates.

9.	The portion of the earth, about 1800 miles thick, between the crust and the core.
11.	Transfer of heat by the mass movement of heated particles into an area of cooler fluid.
12.	Any of several seismically active submarine mountain ranges that extend through the Atlantic, Indian, and South Pacific oceans: each is hypothesized to be the locus of seafloor spreading.
13.	A hypothetical landmass in the Southern Hemisphere.
14.	A theory of global tectonics in which the lithosphere is divided into a number of crustal plates.

Across:

2.	Rigid layer of Earth about 100 kilometers thick.
5.	The hypothetical landmass that existed when all continents were joined, from about 300 to 200 million years ago.
6.	German polar researcher, geophysicist, meteorologist; known for theory of continental drift.
10.	An extinct genus of reptile from the Early Permian of southern Africa and South America.
15.	A surface along which rocks move when they pass their elastic limit and break.

16.	A hypothetical landmass in the Northern Hemisphere.
17.	In the theory of plate tectonics, one of the sections of the earth's lithosphere, constantly moving in relation to the other section.
18.	A linear feature that exists between two tectonic plate.
19.	A subsea chasm extending along the crest of a mid-ocean ridge, locus of the magma upwellings that accompany seafloor spreading.
20.	Region below the lithosphere.

Down:

1.	A process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out.
3.	Is known as a conservative plate boundary since these faults neither create nor destroy lithosphere.
4.	One of the "founding fathers" of plate tectonics.
7.	Largest and best-known genus of the extinct order of seed ferns.
8.	The lateral movement of continents resulting from the motion of crustal plates.

9.	The portion of the earth, about 1800 miles thick, between the crust and the core.
11.	Transfer of heat by the mass movement of heated particles into an area of cooler fluid.
12.	Any of several seismically active submarine mountain ranges that extend through the Atlantic, Indian, and South Pacific oceans: each is hypothesized to be the locus of seafloor spreading.
13.	A hypothetical landmass in the Southern Hemisphere.
14.	A theory of global tectonics in which the lithosphere is divided into a number of crustal plates.

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