Term
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Definition
| continents drifted from current location. (Pangaea) |
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Term
| when continental drift was proposed |
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Definition
| Proposed by Wegener(1912). |
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Term
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Definition
1. No proof.
2. No explanation |
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Term
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Definition
| 1. similar plant on different on continents. |
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Term
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Definition
A.) Glacial evidence in warm climates.
B.) Fossils of ferns in cold climates. |
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Term
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Definition
| similar rock types on both sides of Atlantic. |
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Term
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Definition
| Molten rock pushed through mid-Atlantic Ridge. |
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Term
| who Proposed seafloor spreading |
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Definition
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Term
| Proof of seafloor spreading |
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Definition
1. Newer rocks near ridge.
2. Magnetic clues in rocks. |
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Term
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Definition
| crustal sections move around on mantle |
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Term
| what causes plates to move |
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Definition
| plates move by convection currents (p.111) |
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Term
| how many plates are there |
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Definition
| 13-14 major plates (p.107) |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| two continental (less dense) plates collide. |
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Term
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Definition
| denser oceanic plate goes under less dense plate. |
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Term
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Definition
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Term
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Definition
| two oceanic plates move apart. |
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Term
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Definition
| two continental plates move apart. |
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Term
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Definition
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Term
| example of transform boundary |
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Definition
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