Igneous Rock Test
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Created by:
hwhitmore98 on October 11, 2011
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20 terms
Terms | Definitions |
|---|---|
 Igneous Rock | when lava/magma cools |
| Magma | multen rock under earth's surface |
| Lava | multen rock above earth's surface |
| Intrusive | forms from magma, big crystals |
| Extrusive | forms from lava, small crystals |
| Mafic | dark colored minerals heavily dense minerals cools 2200-1650 degrees F |
| Felsic | light colored minerals light, less dense minerals form 1450-800 degrees F |
| Igneous, Sedimentary, Metamorphic | 3 types of rock |
| Basaltic Magma | contains element Iron (Fe) denser, darker and heavier minerals Most eruptions on Earth are these Runny lava that runs down the sides of volcanos |
| Felsic Magma | extremely sticky; not runny extremely EXPLOSIVE contains more silica doesn't flow well |
| Shield Volcano | wider than it is tall, openings in volcano mafic rocks |
| Composite Volcano | taller than wide, no openings felsic rocks |
| Sediments | solid particles of rock broken off and carried away by erosion, also pieces of organic matter. (bones, shells, fossils) |
| Weathering | processes where smaller fragments are broken off from a larger rock body |
| Erosion | transportation of sediments from one place to another |
| Clastic | sediments are rock fragments; process 1 |
| Organic | sediments are pieces of organic matter (fossils at least 20%, etc) process 2 |
| Chemical | sediments look like crystals or find powders, process 3 |
| Rock | Solid planetary material made up of one or more minerals, organic matter (shells, fossils, bones, coral), volcanic glass and sediments (rock fragments) |
| Metamorphic Rock | 2nd most abundant rock found on Earth but most is underground (10%) |
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