Ключевые слова: action, backgrounds, chart, computer, data, detector, diagram, disaster, erupting, erupting earthquake, exploding, fracture, frequency, geology, graph, illustration and painting, instrument of measurement, measuring, mesh, natural disaster, nature, paper, pastry crust, perpetual motion, planet, pulsing, quake, radio, richter scale, science, seismic, seismogram, seismograph, seismology, sign, spiked, symbol, volcano, wave pattern, waveform, waving,