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 hotter magma will be more viscous.
B) The cooler 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.

Question

Quizplus · Accepted Answer

The cooler magma will be more viscous because viscosity decreases with increasing temperature. In other words, as magma cools, it becomes thicker and flows less easily.

Imagine Two Magmas That Are Identical in All Respects (For