Our ever-changing earth is made up of several plates that bump, grind, rub, and twist in a tectonic dance. All that moving around has created some pretty cool geological features, like mountains. If you want to see a really good example of how rocks can bend over time, take a look at Sideling Hill in Maryland. When they build Interstate 86 they cut through Sideling Hill, uncovering some spectacular layers.
http://www.mgs.md.gov/geology/geology_tour/sideling_hill.html
Sometimes the plates move a bunch all at once. That’s when we feel earthquakes.
Keep an eye on this spot as we get closer to the Day of Reckoning.
https://earthquake.usgs.gov/research/faults/
https://www.exploratorium.edu/faultline/liveeye.html