If the Earth were to switch off its gravity for 5 seconds, it would be catastrophic. With nothing holding them down, people, buildings, automobiles, trees and loose water would start to drift and tumble as the spinning planet kept moving beneath them. The air would also begin to expand outward, but 5 seconds is far too short for the atmosphere to actually escape into space, so the immediate danger is violent pressure changes rather than instant suffocation. Only a prolonged loss of gravity, lasting hours, would strip away the atmosphere and the oxygen that life depends on.
Gravity is not just the name of the movie with Sandra Bullock and George Clooney. As I’m sure you know, it’s an extremely important force that ensures the safety of life on Earth. Have you ever given any thought to what would happen if there was a switch somewhere on Earth for turning gravity off and on? Imagine that one fine day, Earth decided to just switch it off for a bit of fun? In other words, what would happen if gravity disappeared from Earth, even for as little as 5 seconds?
When watching movies that take place in outer space, you might feel jealous of those astronauts floating and fooling around in the absence of gravity. In fact, you might even curse gravity for being there, holding you down all the time. However, you might not want that to happen if you fully understood what would happen if gravity ever decides to call it quits.
Without gravity, everything becomes weightless. Instantly, nothing would be held in place.
Now, I can guess what you’re thinking; you may be thinking that as soon as gravity disappears, you would start floating and flying over everything – cities, maybe even entire countries. It would be so awesome, right?
If you think that, you’re in for quite a surprise… and not a pleasant one.
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