Imagine two magmas that are identical in all respects (for example, same chemistry, pressure, volume) except that one magma is hotter than the other. Which magma will have the higher viscosity?
A. The cooler magma will be more viscous.
B. The hotter magma will be more viscous.
C. The magmas will have the same viscosity.
D. There is not sufficient information to establish the relative viscosities of these magmas.
E. Temperature does not affect magma viscosity.
Answer: A
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