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Cards In This Set
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Why are non ferromagnesian silicates light in color?
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Non ferromagnesian silicates are light in color because they don't have substantial iron and magnesium in their crystalline structure
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Magma that cools deep below the crust is called _______
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Intrusive
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Which of the following fluids has the lowest viscosity?
A. Basalt B. Andesite C. Rhyolite |
Basalt
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An igneous rock with a ______ texture has many holes from gas escaping from the magma
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Vesicular
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A rock that includes the minerals olivine, pyroxene, amphibole and biotite has what composition?
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Ultramafic
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Why are the crystals in a phaneritic rock large while the crystals in an aphanitic rock are small?
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Aphanitic rocks are an extrusive igneous rock to where the crystalline structure is too fine to be seen by the unaided eye while phaneritic rocks are an intrusive igneous rock and the crystals in the rock solidified under the surface so the cooling process was slow enough to make the crystals grow
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Name one field of geology that people study.
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Volcanology
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True or False: A theory is a scientific guess that does not have any extensive evidence to support it.
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False
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Who is considered the father of geology?
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James Hutton
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True or False: The Earth's mantle is molten
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False
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Name one way that we know about the materials and properties of the interior of the Earth if we cannot directly observe it
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Seismic waves
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What type of igneous rock makes up the majority of the oceanic crust?
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Basalt
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Assuming it is cool enough that you wouldn't be injured and could actually observe the rocks around you, if you dug a hole into the mantle, what color would it be? Why?
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Reddish-orange; The heat coming from the mantle (the mantle has rocks with higher portions of iron and magnesium)
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Where on Earth does the thickest continental crust occur?
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Himalayas
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You are analyzing a rock and find that it has 250 parent isotopes and 750 daughter isotopes.
(A) How many parent isotopes were present when the rock initially formed? (B) How many half-lives have occurred? |
(A) 125
(B) 3 |
