Term
| What was the name of the super continent? |
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Definition
| Pangaea, meaning all land |
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Term
| What did Wegener argue must have once been joined based on fossils? |
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Definition
| South America and Africa must have been joined |
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Term
| What does rock evidence exists in the form of? |
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Definition
| Rock evidence is continental drift exist in the form of several mountain belts that end at one coastline, only to reappear on a landmass across the ocean |
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Term
| Where did areas of glacial till found? |
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Definition
| LAYERS of glacial till were found in Southern Africa and South America, as well as India and Australia. |
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Term
| What could Wegener not describe? |
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Definition
| Wegner could not describe a mechanism that was capable of moving the continents across the globe |
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Term
| What is the new theory known as? |
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Definition
| The new theory was known as plate tectonics |
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Term
| What are the segments of the lithosphere called? |
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Definition
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Term
| What is the movement driven by? |
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Definition
| The movement is driven by the unequal distribution of heat within earth |
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Term
| What are also called spreading centers? |
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Definition
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Term
| What happens at convergent boundaries? |
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Definition
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Term
| What is an example of a transform plate boundary |
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Definition
| Transform plate boundaries are margins where two plates grind past each other without the production or destruction of the lithosphere |
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Term
| What two things continuously add oceanic lithosphere? |
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Definition
| Spreading and up welling of magma continuously adds oceanic lithosphere |
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Term
| What is the longest physical feature on earths surface? |
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Definition
| The system of ocean ridges is the longest physical feature on earths surface |
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Term
| What is the process by which new oceanic lithosphere is produced? |
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Definition
| Seafloor spreading is the process by which plate tectonics produce new oceanic lithosphere |
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Term
| What are subduction zones? |
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Definition
| Destructive plate margins where oceanic crust is being push down in the mantle |
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Term
| What two things control convergent boundaries? |
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Definition
| The type of crust involved forces acting on the plate |
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Term
| What happens when two oceanic slabs converge? |
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Definition
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Term
| What happens at transform plate boundaries? |
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Definition
| At transform plate boundaries, plates grind past each other without destroying the lithosphere |
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Term
| Where are most transform plate boundaries located? |
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Definition
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Term
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Definition
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Term
| What is the strongest evidence of seafloor spreading? |
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Definition
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Term
| What close link is obvious? |
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Definition
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Term
| What was the drilling ship used from 1968 to 1983 named? |
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Definition
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Term
| What is the basic driving force for plate movement? |
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Definition
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