how? because the solid aluminium body of that pressurized plane is protecting the water in the glass from everything from the wild to disturb it...
now you think a fluid air layer called the ozone can do the same with the surface of the earth at the equator moves at a speed of 460 meters per second--or roughly 1,000 miles per hour.we learn that the earth is moving about our sun in a very nearly circular orbit. It covers this route at a speed of nearly 30 kilometers per second, or 67,000 miles per hour. In addition, our solar system--Earth and all--whirls around the center of our galaxy at some 220 kilometers per second, or 490,000 miles per hour. AND YOU THINK THE WATER WILL ALWAYS STAY STILL ?!?!?!??!?! You must improve your basic science level please...