quiz2.KEY - GEOL 101-501-509 Quiz #2 Form A Marcantonio...

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GEOL 101—501-509 Quiz #2 Form A Marcantonio Spring 2007 Name _________________________________ 1) Which of the following best defines a mineral and a rock? 6) Lava flows are typically finer grained than intrusive igneous rocks. Why? A) A rock has an orderly, repetitive, geometrical, internal arrangement of minerals; a mineral is a lithified or consolidated aggregate of rocks. A) Intrusive magma is cooler because it is well insulated by the surrounding rock. B) A mineral consists of its constituent atoms arranged in a geometrically repetitive structure; in a rock, the atoms are randomly bonded without any geometric pattern. B) Intrusive magma flows onto the Earth's surface and cools very slowly, allowing many small mineral grains to grow. C) In a mineral the constituent atoms are bonded in a regular, repetitive, internal structure; a rock is a lithified or consolidated aggregate of different mineral grains. C) The extrusive magma cools quickly so the
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quiz2.KEY - GEOL 101-501-509 Quiz #2 Form A Marcantonio...

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