The typical trend in a rising plume of subduction-zone magma is to increase ____________.
A) the percentage of SiO2
B) the viscosity
C) the explosive potential of the magma by holding in the gases more tightly
D) All of the choices are correct.
Correct Answer:
Verified
Q2: The most famous of all volcanoes probably
Q3: Areas of geyser activity include _.
A)Iceland
B)Yellowstone Park
Q4: The viscosity of magma is lowered by
Q5: The most peaceful eruptions are _.
A)Icelandic type
Q6: The presence of water _ the melting
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
Q12: Hawaiian volcanoes unlikely to erupt include _.
A)Haleakala
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