๐ถ AN EARTHQUAKE ๐ถ
๐ถ An Earthquake ๐ถ
An earthquake is sudden earthquake or collapse on the earth's surface called the earth's crust. Most earthquake are minor tremors. Large earthquake are powerful earthquakes. A strong earthquake is followed by a low- magnitude earthquake called a aftershock. Gradually , such power ddiminishes. An earthquake can be felt over a large area. Earthquake usually lost no more than a minute. They can spread over a large area. Earthquake can not be predicted. Scientist are conducting research on it. Earthquake are reported by seismometer. A richter gauge is used to measure the energy released during an earthquake. Tsunami in 2004 natural disasters caused by a magnitude 9.3 earthquake.
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