The water is being pulled down from one bottle the the one below it by gravity. if the is any swirling in the water, which occurs naturally, the water can take on that spin as it is pulled down and form a vortex.
A tornado is a violently rotating and destructive column of air extending from the base of a thunderstorm to the ground. The formation of tornadoes these is complicated. First, a condition called...
Tornadoes can occur nearly anywhere that there are thunderstorms, But the occur most frequently on the central plains of the United States. Tornadoes form when wind shear, rolling air currents formed...
A tornado is a violently rotating column of air extending from the base of a thunderstorm to the ground, often made visible by a condensation funnel. The formation of tornadoes is complicated. First,...