Our Dancing and Cheering Can Shake the Earth Like a Mini Earthquake!

Giant crowds at screaming concerts and exciting football matches are actually shaking the ground beneath their feet, creating human-made seismic waves [tiny vibrations that travel through the Earth]. On the other hand, during a cool solar eclipse, the whole planet suddenly goes quiet and still because everyone stops to watch. Isn't it amazing that you make the Earth dance just by jumping up and down?