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Plate Tectonics Arc
| Question | Answer |
|---|---|
| force to make convergent boundaries | compression |
| force to make divergent boundaries | tension |
| force to make transform boundaries | shearing |
| describe the movement of the plates in a convergent boudary | pushing together |
| describe the movement of the plates in a divergent boudary | pulling apart |
| describe the movement of the plates in a transform boudary | moving in opposite directions |
| are convergent boudaries constructive or destructive? | destructive |
| are divergent boudaries constructive or destructive? | constructive |
| are transform boudaries constructive or destructive? | |
| whats a constructive boundary? | a bounday where new crust is created |
| whats a destructive boundary? | a bounday where crust is destroyed or changed |
| what force causes a normal fault? | tension |
| what force causes a reverse fault? | compression |
| what force causes a strike-slip or lateral fault? | shearing |
| theory of continental drift | continents have moved slowly to their current locations |
| who originated the idea of continental drift? | alfred wegner |
| what is the name of the super continent? | pangea |
| evidence that supports continental drift | puzzlelike fit of the continents; fossil evidence; rock and climate clues |
| seafloor spreading | ocean floor is pushed aside on both sides of Magma comes up through the mid ocean ridge and flows sideways carrying the ocean floor with it. |
| who's idea was seafloor spreading? | Harry Hess |
| lithosphere | Rigid layer of the crust and upper part of the mantle. Divided into plates |
| asthenosphere | Plastic like layer of Earth (in the mantle) on which the lithospheric plates float and move. |
| composite volcanoes | steep sides; sometimes erupt violently |
| cinder cone volcanoes | small cone formed by tephra; moderate violent eruptions |
| shield volcanoes | sloping sides; largest type of volcano basaltic lava |
| subduction | a dense oceanic plate converges wit a less dense continental plate and the oceanic plate sinks under the continental plate |
| tsunami | Powerful seismic sea waves that begin over an ocean floor earthquake |
| what causes a tsunami? | earthquake on the ocean floor |
| weathering | process in which rock break down |
| erosion | process in which rock particles are carried |
| seismic waves | earthquake waves that are transmitted through materials in Earth and along the surface of the Earth |
| What causes the plates to move? Describe it. | Convection Currents. Hot magma in the mantle becomes less dense and rises to the crust. As the magma cools it sinks and moves the plates along with it. |
Created by:
is2903
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