Why do the plumes of ash above an erupting volcano rise to stratospheric heights?
A) The force of the eruption does this.
B) The ash is less dense than its surrounding air.
C) Weather conditions at the time of the eruption control the height of the cloud.
D) The viscosity of the lava directly affects the height of the cloud.

Question

Quizplus · Accepted Answer

Plumes of ash from an erupting volcano rise to stratospheric heights because the ash is less dense than its surrounding air. This allows it to rise and be carried by wind currents to high altitudes, often reaching the stratosphere.

Why Do the Plumes of Ash Above an Erupting Volcano