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Earth Science
| Question | Answer |
|---|---|
| Who is responsible for coming up with the idea of Continental Drift, and why did he first come up with the theory? | Alfred Wegener. First clue: the shape of the continents |
| What clues provide evidence to the theory? | Climate, rock, fossils |
| What is the difference between a theory and a law? | Laws can be tested and proven. Theories cannot be proven, but rely on evidence to be supported. |
| What are some other theories, besides plate tectonics and continental drift? | Geocentrism (the idea that the earth was the center of the solar system - debunked); the earth was flat (debunked); evolution (widely accepted) |
| Explain how ROCKS can provide evidence for continental drift, and where in the world is this evidence? | Rocks of same age and type were found on multiple continents. Example is: Appalachian and Caldeonian Mountains |
| Explain how CLIMATE can provide evidence for continental drift, and where in the world is this evidence? | Evidence of glaciers exist in places that are too warm for glaciers (India, Africa), suggesting that those continents were at one time at a difference latitude |
| Explain how FOSSILS can provide evidence for continental drift, and where in the world is this evidence? | Plant and animal fossils found across multiple continents in areas where they might have been connected. |
| What did scientists discover to help explain Wegener's theory of continental drift? | That the underground the mantle heats up and rises in a convection current. Convection is the reason that the continents move. |
| Know CONVERGENT--COLLISION, what they form and where in the world you can find an example. | Two continental plates come together, both push up to form a mountain and/or plateau. Example: Himalayas/Tibetan Plateau |
| Know CONVERGENT--SUBDUCTION, what they form and where in the world you can find an example. | Two plates come together and one slides beneath the other. Two oceanic plates-- form a trench (Example: Mariana Trench), One oceanic and one continental plate--form coastal mountains (Example: Andes or Cascades) |
| Know DIVERGENT (between 2 continental or 2 oceanic plates), what they form and where in the world you can find an example. | Plates separate. 2 ocean plates separate to form a mid-ocean ridge. Lava comes from beneath the grounds to make new oceanic crust. Ex: Mid-Atlantic Ridge 2 continental plates separate, new continental crust is formed. Ex: East African Rift Valley |
| Know TRANSFORM, what they form and where in the world you can find an example. | Plates slide past one another. Plates build stress until it breaks, causing an earthquake |
| Describe the asthenosphere. | More fluid, moves, where the convection currents are |
| Describe the lithosphere. | Crust and upper mantle. Crust is rigid/rocky |
| How does the asthenosphere and the lithosphere relate to moving plates? | The movement in the asthenosphere carries the lithosphere (and the crust) with is, causing plates to move. |
| Which part contains the crust? | Lithosphere |
Created by:
emilinpbg
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