Term
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Definition
| A section of the lithosphere that slowly moves over the asthenosphere carrying pieces of continent and oceanic crust |
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Definition
| The theory that pieces of earths lithosphere are in constant motion driven by convection currents in the mantle |
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Definition
| Breaks in earths crust where rocks have slipped past each other |
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Definition
| The place where two plates move apart |
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Definition
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Definition
| The place where two plates come together or collide |
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Definition
| A place where two plates slip past each other moving in opposite directions |
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Term
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Definition
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Term
| What is Wegener's hypothesis? |
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Definition
| That all the continents wer once connected |
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Term
| Name land features that give evidence for continental drift? |
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Definition
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Term
| Name kinds of fossils that give evidence of continental drift? |
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Definition
| Mesons aureus and lystrosaurus |
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Term
| Name climate change evidence that supports the hypothesis of continental drift? |
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Definition
| Spitsbergen was once warm |
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Term
| Why was the Wegener hypothesis rejected? |
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Definition
| They didn't know about tectonic plates |
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Term
| What is a mid ocean ridge? |
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Definition
| An undersea mountain chain |
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Term
| How did scientists map the mid ocean ridges beneath Earth's surface? |
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Definition
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Term
Where are the mid ocean ridges found on Earth?
Exception |
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Definition
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Term
| Describe the process of sea floor spreading. |
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Definition
| Mid ocean ridges erupts and spreads the land |
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Term
| What happens to the rock along the ridge when the new molten material erupts? |
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Definition
| It gets pushed to the side |
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Term
What evidence supports the theory of sea floor spreading?
(3 things) |
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Definition
Molten material
Drilling samples
Magnetic strips |
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Term
| What process occurs at deep ocean trenches? |
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Definition
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Term
| Describe the process of subduction? |
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Definition
| Ocean floor sinks beneath a deap ocean trench |
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Term
| Why is the Pacific Ocean shrinking? |
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Definition
| B/c of deep ocean trenches |
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Term
| Why is the Atlantic Ocean spreading |
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Definition
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Term
| What does the theory of plate tectonics explain? |
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Definition
| That the continents could have been connected |
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Term
| What is the force that can move Earth's heavy plates? |
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Definition
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Term
| Name and describe the three kinds of plate boundaries? |
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Definition
Sliding
Colliding
spreading |
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Term
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Definition
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Term
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Definition
| As fast as ur fingernail grows |
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Term
| How long did Pangaea exist? |
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Definition
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Term
| Can we predict what Earth will look like in 100 million years? |
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Definition
| We think it will be a supercontinent again because the continents r always moving |
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