The motion of air mass in a tornado is a
A. free vortex motion
B. forced vortex motion
C. free vortex at center and forced vortex outside
D. forced vortex at center and free vortex outside
Answer:D
The motion of air mass in a tornado is a
A. free vortex motion B. forced vortex motion C. free vortex at center and forced vortex outside D. forced vortex at center and free vortex outside