Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
activity chart curve damage danger data detail detector device diagram disaster earth earthquake earthquakes equipment eruption frequency graph graphing instrument lines measure measurement meteorological motion needle paper peak pulse quake recording rendering safety science seismic seismicity seismogram seismograph seismological seismology seismometer seismometry sheet technology tectonics vibration volcanic wave waves