The viscosity of magma is lowered by __________.
A) increasing temperature
B) decreasing crystal content
C) decreasing SiO2 content
D) All of the choices are correct.
Correct Answer:
Verified
Q1: Spreading centers are an ideal location for
Q2: The most famous of all volcanoes probably
Q3: Areas of geyser activity include _.
A)Iceland
B)Yellowstone Park
Q5: The most peaceful eruptions are _.
A)Icelandic type
Q6: The presence of water _ the melting
Q7: The typical trend in a rising plume
Q8: If basaltic lava reaches the sea or
Q9: The volcanic explosivity index (VEI)measures size of
Q10: Slow flowing,more viscous basaltic lava commonly has
Q11: Silicon and oxygen link up to form
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