What was the rate of cooling and the environment of formation for an extrusive igneous rock and why?
A)Slow because the magma was insulated below the surface
B)Fast because it was erupted from a volcano
C)Slow because it cooled in a volcanic lava flow far from the vent
D)Fast because it cooled 6 kilometers below the surface

Question

Quizplus · Accepted Answer

Extrusive igneous rocks form from lava that is erupted from a volcano. This lava cools rapidly as it is exposed to the cooler air or water at the surface, leading to a fast rate of cooling.

What Was the Rate of Cooling and the Environment of Formation