Ключевые слова: abstract, amplitude, background, beat, break, change, curve, digital, disaster, display, earthquake, electric, electricity, electronic, emergency, eruption, fracture, frequency, graph, grid, illustration, meter, monitor, motion, natural, nature, oscilloscope, physical, pressure, pulse, pulsing, quake, rate, richter, richter scale graph, scale, scary, seismic, seismograph, seismometer, sharp, symbol, technology, trace, wave, waveform,