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13 Cards in this Set
- Front
- Back
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What is effervescence
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a mineral's reaction to acid characterized by bubbling/fizzing
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The big 4 in the scientific theory
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observation, hypothesis, experimentation, communication
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What causes color variations in rocks?
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impurities
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What is a habit? Do all minerals have distinctive habits?
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Habit is the shape that a mineral naturally forms. Not all minerals have distinctive habits.
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Striations are?
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distinctive lines or grooves
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How do you identify igneous rocks?
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color, minerology, and texture
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What determines the texture of an igneous rock?
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The crystals size (size of the minerals)
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What kind of volcanoes flow and have low viscosity?
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Basaltic Fe rich, Si poor magma
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Where do volcanoes form?
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Divergent or convergent boundaries.
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What kind of volcanoes are explosive and have high viscosity?
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Si rich Andesite and Rhyolite
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Lava is ______ as magma is _____
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divergent, convergent (DE, CI)
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Can you see individual crystals in these rocks?
1.aphanitic 2.phaneritic 3.porhyritic 4.vesticular |
1.no
yes yes 4.no |
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Mid ocean ridges form on which boundaries?
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divergent boundaries
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