Is the sudden shaking of the Earth's surface, Earthquake, Tsunami, It is a government agency responsible in providing information on the activities of earthquakes and Volcanic Eruption in the Philippines, PHIVOLCS, PAGASA, 2 types of Earthquake, Volcanic Eruption & Tectonic Plate, Volcanic Earthquake & Tectonic Earthquake, An instrument that measures the motion of the ground during earthquake, Thermometer, Seismograph, A type of earthquake that happen when there is a strong volcanic eruption, Volcanic Earthquake, Tectonic Earthquake, A type of earthquake that is caused by the movement of Earth's crust or crustal plate, Volcanic Earthquake, Tectonic Earthquake

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