Plate Tectonics
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Plate Tectonics
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Asthenosphere:the soft, flexible upper layer of the mantle, on which the tectonic plates move
Convergent:the type of boundary where plates move toward each other and converge or collide
Divergent:the type of boundary where plates pull apart
Transform:the type of boundary where plates slide along one another
Lithosphere:a rigid layer that is 100km thick and generally less dense then the material underneath
Continental Drift:the theory that all Earth's continents were once joined together into a single large landmass, and then moved apart, forming the continents we see today
Mid Ocean Ridge:a system of connected underwater mountain ranges
Pangaea:"all land" the single huge super continent that supposedly existed 245 million years ago, when all of Earth's continents were joined together
Seafloor Spreading:the process by which new oceanic crust forms when magma rises and solidifies the mid-ocean ridges. The newer crust pushes the old crust out to each side, which is why the age of the seafloor increases with distance away from the mid-ocean ridges
Seismograph:a device used by scientist to record surface waves from earthquakes
Earthquake:vibrations caused by braking rocks around faults
Volcano:an opening in Earth's surface that often forms a mountain when layers of volcanic ash erupt and build up
Fault:a crack in the earth's crust resulting from the displacement of one side with respect to the other
Hot Spot:location on the mantle that is hotter than any other areas and that melt rock, which is forced upward toward the crust as magma
Mantle:the largest layer inside Earth, lying directly above the outer core and that is made mostly of silicon, oxygen, magnesium, and iron
Seismic Waves:energy waves that are produced at and travel outward from the earthquake's focus
Convection Current:the cycle of rising, heating, cooling, and sinking that is thought to be the force behind plate tectonics
Plate:a rigid layer of the Earth's crust that is believed to drift slowly
Plate Tectonics:the theory that Earth's crust and upper mantle are broken into sections that move around on a plastic-like layer of the mantle
Harry Hess:the geologist known for his theories on seafloor spreading
Plate Tectonics
Across:2. | the theory that all Earth's continents were once joined together into a single large landmass, and then moved apart, forming the continents we see today | 4. | the soft, flexible upper layer of the mantle, on which the tectonic plates move | 7. | "all land" the single huge super continent that supposedly existed 245 million years ago, when all of Earth's continents were joined together | 10. | the geologist known for his theories on seafloor spreading | 11. | the type of boundary where plates slide along one another | 12. | the type of boundary where plates pull apart | 14. | the cycle of rising, heating, cooling, and sinking that is thought to be the force behind plate tectonics | 16. | the type of boundary where plates move toward each other and converge or collide | 18. | a system of connected underwater mountain ranges | 19. | location on the mantle that is hotter than any other areas and that melt rock, which is forced upward toward the crust as magma |
| | Down:1. | the process by which new oceanic crust forms when magma rises and solidifies the mid-ocean ridges. The newer crust pushes the old crust out to each side, which is why the age of the seafloor increases with distance away from the mid-ocean ridges | 3. | a crack in the earth's crust resulting from the displacement of one side with respect to the other | 5. | energy waves that are produced at and travel outward from the earthquake's focus | 6. | vibrations caused by braking rocks around faults | 7. | the theory that Earth's crust and upper mantle are broken into sections that move around on a plastic-like layer of the mantle | 8. | a rigid layer that is 100km thick and generally less dense then the material underneath | 9. | a rigid layer of the Earth's crust that is believed to drift slowly | 13. | a device used by scientist to record surface waves from earthquakes | 15. | an opening in Earth's surface that often forms a mountain when layers of volcanic ash erupt and build up | 17. | the largest layer inside Earth, lying directly above the outer core and that is made mostly of silicon, oxygen, magnesium, and iron |
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PuzzleFast.com, Noncommercial Use Only
Plate Tectonics
Across:2. | the theory that all Earth's continents were once joined together into a single large landmass, and then moved apart, forming the continents we see today | 4. | the soft, flexible upper layer of the mantle, on which the tectonic plates move | 7. | "all land" the single huge super continent that supposedly existed 245 million years ago, when all of Earth's continents were joined together | 10. | the geologist known for his theories on seafloor spreading | 11. | the type of boundary where plates slide along one another | 12. | the type of boundary where plates pull apart | 14. | the cycle of rising, heating, cooling, and sinking that is thought to be the force behind plate tectonics | 16. | the type of boundary where plates move toward each other and converge or collide | 18. | a system of connected underwater mountain ranges | 19. | location on the mantle that is hotter than any other areas and that melt rock, which is forced upward toward the crust as magma |
| | Down:1. | the process by which new oceanic crust forms when magma rises and solidifies the mid-ocean ridges. The newer crust pushes the old crust out to each side, which is why the age of the seafloor increases with distance away from the mid-ocean ridges | 3. | a crack in the earth's crust resulting from the displacement of one side with respect to the other | 5. | energy waves that are produced at and travel outward from the earthquake's focus | 6. | vibrations caused by braking rocks around faults | 7. | the theory that Earth's crust and upper mantle are broken into sections that move around on a plastic-like layer of the mantle | 8. | a rigid layer that is 100km thick and generally less dense then the material underneath | 9. | a rigid layer of the Earth's crust that is believed to drift slowly | 13. | a device used by scientist to record surface waves from earthquakes | 15. | an opening in Earth's surface that often forms a mountain when layers of volcanic ash erupt and build up | 17. | the largest layer inside Earth, lying directly above the outer core and that is made mostly of silicon, oxygen, magnesium, and iron |
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© 2012
PuzzleFast.com, Noncommercial Use Only