Rock may melt by _______________.
A) lowering the pressure on it
B) raising its temperature
C) increasing its water content
D) All of the choices are correct.
Correct Answer:
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Q14: The dominant volcanic gas (commonly 90% or
Q15: Why does the magma from some volcanoes
Q16: A shield volcano has a great _.
A)height
Q17: Over _ of volcanism is associated with
Q18: The three Vs of volcanology are _.
A)viscosity,volatiles,velocity
B)viscosity,volatiles,volume
C)viscosity,velocity,volume
D)volatiles,volume,variability
E)volatiles,velocity,variability
Q20: Mineral growth in magmas at the
Q21: _ eruptions are common first phases in
Q22: The number of "hot spots" worldwide is
Q23: _ eruptions are the most violent types
Q24: Crater Lake,Oregon,fills the caldera of _ which
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