Volcanoes not only erupt and spew objects into the air; they also move the ground. Quite a bit, in some cases.
So there's often some shaking with the baking. Those are approximately the words of seismologist Stephen McNutt.
He delivers the first of this year's geology lectures at Southwestern Oregon Community College in Coos Bay, explaining how seismologists study volcanoes.
Dr. McNutt visits with a preview.