What if everyone in the world, all 7 billion of us, jumped at once? What would happen? Well, to start, the earth is constantly spinning. As more mass builds toward the center of the earth, it actually spins faster. Therefore, the days get shorter. This could be noted in the earthquake that took place in Japan in 2011. At an alarming magnitude of 8.9, it managed to re-distribute a great array of mass to the center of the earth (as can be seen in the picture below), ultimately causing the days to become a whopping 1.8 MICRO-seconds shorter (a bit of sarcasm…that’s like…not noticeable at all).

So…in a scenario, if we gathered everyone in the world together (all of us could fit into the city of Los Angeles shoulder-to-shoulder) and jumped exactly 30 centimeters high and came back down at once…

…nothing would happen. Sorry to disappoint…

There is a very small possibility that some seismic activity could be created. It wouldn’t be large enough to re-create Japan’s Earthquake of 2011, which was very destructive. However, we could potentially…move the earth. The further we get from the Earth’s center, it actually moves away from us. Despite this, it moves precisely back to the same spot it was when we come back down so…again, nothing would happen.

Good day 🙂