31. Once this occurs, the effect is dramatic, and the dust devil dissipates in seconds. 32. On Mars, dust devils have unexpectedly cleaned the solar panels of the Mars rovers. 33. Dust devil tracks can be seen on dunes in one of the pictures below.34. Wendy then finds Dust Devil and tries to shoot him but the gun jams. 35. The dust devils were a major hazard for Campbell. 36. The primary flow is circular around the vertical axis of the tornado or dust devil . 37. Consequently, near the center of the tornado or dust devil the air pressure is low. 38. Dust devils occur when the sun warms up the air near a flat, dry surface.39. While being flown by another pilot, the plane encountered a dust devil on final approach. 40. She then sees Dust Devil on the side of the road, and stops for him.
