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Plate Tectonics
This should help for the test! Made by John Cromwell for Mr. V's class!
| Question | Answer |
|---|---|
| Who was responsible for the idea of Continental Drift? | Alfred Wegner |
| What are the three main points of evidence for Continental Drift? | Mountain Ridges (Rock evidence), Fossils, and Climate |
| What was the name of the super continent when all continents were together? | Pangaea |
| What is the evidence for sea floor spreading? | Mid-Ocean Ridges, the crust around the mid ocean ridge being younger |
| Why was the Theory of Continental drift rejected? | Wegner didn't give enough evidence of why the continents were moving. |
| What did Harry Hess think was powering sea floor spreading? | Convection |
| Where is the younger crust found? | Close to the Mid-Atlantic ridge |
| How is the age of crust established? | Using magnetic reversal and radiometric dating drilled samples. |
| What is a slab pull? | Convection that also pulls a plate into the earth that is subducted. |
| What type of boundary do constructive forces happen at? | Divergent Boundaries |
| What two theories come together to make the Theory of Plate tectonics? | Sea Floor Spreading and Continental Drift |
| What type of boundary do destructive forces happen at? | Convergent Boundaries |
| What is the Theory of Plate Tectonics? | Motion on Earth where plates over the asthenosphere produce forces of convection currents |
| What powers the movement of Plate Tectonics? | Convection Currents |
| What's the difference between compositional and mechanical layers? | Compositional are separated into the layers they're made of, mechanical are separated by their properties. |
| What are the three types of plate boundaries? | Convergent, Divergent, and Transform |
| What are the three compositional layers of the Earth? | Core, mantle, and crust |
| What are the mechanical layers of the earth? | Lithosphere, Asthenosphere, Mesosphere, Outer Core, and Inner Core |
| What is a famous example of a transform boundary? | San Andreas Fault |
| What are the two types of crust in the earth? | Oceanic Crust and the Continental Crust |
| What is the difference between Oceanic and Continental Crust? | Oceanic is thin and composed of basalt, Continental is thick and composed of mostly granite. |
| What is the core mostly made of? | Iron and Nickel |
| Which way do Divergent plates go? | Divergent plates spread away from each other. |
| Which way do Convergent plates go? | Convergent plates collide head on. |
| Which way do Transform plates go? | Transform plates slide among each other in the opposite direction. |
Created by:
JohnCromwell
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