Term
| The idea that continents have moved and still are slowly across Earths surface is |
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| process when one oceanic plate bends and sinks down into the asthenosphere |
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| viewed as grand unifying theory of Geology |
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| rivers or sheets of ice formed by snow on mountains |
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| Why do continents seem to have different polar wander paths |
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Definition
| Each continent has its own unique polar wander path |
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Term
| submarine mountain ranges whose peaks lie only about 2-2.5 km below sea level |
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| example of a mid ocean ridge |
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Definition
| deep area of the Pacific ocean and a few others |
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| underwater mountain formed by volcanic activity |
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Term
| a narrow band of vertical fracture in ocean floor; lie roughly at right angles to mid ocean ridge |
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Definition
| ocean floor fracture zone |
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Term
an anomaly is a difference from the normal value of _____ at Earths surface
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| the exsistence of orderly variations in the strength of the measured magnetic field over the sea floor |
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Term
| What kind of rock is basalt? (Texture too) |
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Definition
| Igenous Fine Grained Extrusive |
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Term
Crust plus top cooler part of upper mantle |
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Definition
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Term
| Layer of mantle lies between 100-150 km + 300 km |
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Definition
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Term
| Which lithospheric plate are we on? |
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Definition
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Term
Plate Boundary and 3 Types
1. Plates move away?
2. Plates move toward?
3. Plates move side to side? |
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Definition
Border between 2 lithosphere plates
1. Divergent
2. Convergent
3. Transform |
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Term
Margin at spreading center with tectonic activity is ____
Margin with no tectonic activity with no plates meeting is ______
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| Location at base of lithosphere, top of mantle plate, temperature can cause melting (Think Hawaii) |
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Definition
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Term
| Location at base of lithosphere, top of mantle plate, temperature can cause melting (Think Hawaii) |
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Definition
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Term
Example of a rift?
Collision? |
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Definition
East African Rift
Appalachian Mountains |
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Term
| A naturally ocuring solid formed by geological processes that has a acrystalline structure and defineable chemical composition |
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Definition
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Term
| What are the 5 Characterisitcs of a Mineral? |
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Definition
1. Solid
2. Inorganic
3. Naturally occuring
4. Definite chemical composition
5. Crystalline Structure |
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Term
| Pure substance that cannot be separated to other minerals |
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Definition
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Term
| Smallest piece of an element |
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Definition
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Term
| Negative charge (N for No mass) |
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Definition
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| Atomic number is based on the number of _____ |
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Term
| Atomic weight is the combiation of _______ and ________ |
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Definition
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| Versions of element with same atomic number but different weight |
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Definition
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| 2 different minerals with same compositions but different crystal structure |
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