Hanson Dynamic Ea 3 Word Scramble
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Term | Definition |
convection current | movement of materials caused by temperature changes |
convergent boundary | plate boundary where the plates come together |
divergent boundary | plate boundary where the plates move apart |
fossil | the preserved remains of an organism |
lithosphere | topmost solid part of the earth; includes some of the mantle and the crust |
mid-ocean ridge | undersea mountain chain |
ocean-floor spreading | old ocean floor is pushed apart and new floor is formed |
Pangea | name given to the land when it was one big landmass |
plate | moving pieces that make up the lithosphere |
strike-slip boundary | plates slide past each other horizontally |
subduction | crust plunges back into the interior of the earth |
tectonics | movements of the plates that shape the Earth's crust |
theory of continental drift | continents are drifting apart |
theory of plate tectonics | continents are drifting apart and new ocean floor is forming |
transform fault | fault across a mid-ocean ridge |
trench | place where old ocean floor is being subducted |
Alfred Wegener | theory of continental drift; continents had once been joined together and had since moved apart |
glossopteris | an extinct organism whose fossils provide evidence for continental drift |
rift valley | a valley formed when the block of land between two normal faults slides downward |
oceanic plate | thin crust/plate under the ocean |
continental plate | thicker plates under the continents |
Created by:
marydykstra
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