Geol 101 Physical Geology Past Exam Questions Lecture 8 Page 3
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38. Which of the following types of lava has the lowest viscosity and therefore flows the fastest?
A. felsic
B. intermediate
C. mafic
D. strawberry syrup
E. ketchup
8. The most common type of igneous rock in the solar system forms from mafic lava and is called:
A. basalt
B. granite
C. peridotite
D. limestone
E. andesite
8. What do we call mafic lava that is smooth and syrupy?
A. magma
B. pahoehoe
C. a’a
D. spatter
E. cinders
8. What controls the size of crystals that form an igneous rock?
A. magma chemistry
B. rate of cooling
C. types of minerals
D. Bowen’s reaction series
E. type of volcano
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