What I have Learned in Science this Year

This is what I have learned in science this year. This year in science I have learned a lot about earthquakes. I have learned what “P” and “S” waves are, how to locate an earthquake, and what each wave can go through. “P” waves are the first vibrations to come from an earthquake, they are also known as primary waves. “S” waves are the second group of vibrations to come from an earthquake, they are also known as secondary waves. “P” waves can travel through gases, liquids, and solids, while “S” waves can only travel through solids (S for solid). I have also learned how to locate an earthquake. In order to do this you need to recall that “P” waves are faster than “S” waves. You need to have a device to measure vibrations, known as a seismograph, in one location and another in another location. Using the data from the two devices and the time difference from “P” to “S” waves, you can triangulate the center of the quake.