<p style=";text-align:left;direction:ltr"><strong>An earthquake</strong> is a destructive natural phenomenon, which is a rapid ground tremor followed by <strong>seismic</strong> waves, and the cause of this phenomenon is the movement of the so-called terrestrial tectonic plates, which leads to the breakage of the ground rocks and the occurrence of shock waves whose impact on the surface of the earth is sometimes catastrophic.</p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> Humans measure the strength of earthquakes using several measures, perhaps the most prominent of which is the <strong>Richter Scale</strong> , which classifies <strong>earthquakes</strong> from 1 to 10 according to the strength, with number 10 being the strongest.</p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> Predicting <strong>earthquakes</strong> is done on 3 levels, the first is where <strong>earthquakes</strong> occur, by identifying areas of permanent <strong>seismic</strong> activity, and the second level is the strength with which <strong>earthquakes</strong> occur, and the third is the timing of the <strong>earthquake,</strong> which is currently impossible and there is no way we can know this.</p><p style=";text-align:left;direction:ltr"></p><h2 style=";text-align:left;direction:ltr"> <strong>The 10 strongest earthquakes to hit the Earth since 1950, according to the Richter scale:</strong></h2><ol style=";text-align:left;direction:ltr"><li style=";text-align:left;direction:ltr"> Chile <strong>earthquake</strong> ( <strong>magnitude 9.5</strong> ): This earthquake occurred on <strong>05/22/1960</strong> , and it is the strongest earthquake recorded in human history. This <strong>earthquake</strong> caused tsunamis that affected all of the United States, Japan and the Philippines, and the <strong>earthquake</strong> and tsunami killed nearly <strong>6000</strong> people.</li><li style=";text-align:left;direction:ltr"> Alaska <strong>earthquake</strong> ( <strong>magnitude 9.2</strong> ): occurred on <strong>3/28/1964</strong> , and this earthquake caused tsunami waves that caused material losses of 311 million dollars, and 143 people were killed.</li><li style=";text-align:left;direction:ltr"> Sumatra earthquake - Indonesia ( <strong>magnitude 9.1</strong> ): On <strong>12/26/2004</strong> , this large earthquake caused huge tsunami waves that affected several countries and caused the death of more than a quarter of a million people.</li><li style=";text-align:left;direction:ltr"> Honshu earthquake - Japan <strong>(magnitude 9.0):</strong> On <strong>03/11/2011,</strong> one of the most seismic impact in history, which caused this <strong>earthquake</strong> , which lasted for 6 minutes massive tsunami, caused material losses worth billions more than 18 thousand people killed.</li><li style=";text-align:left;direction:ltr"> The Kamachka earthquake - Russia ( <strong>magnitude 9.0</strong> ): on <strong>11/4/1952,</strong> causing material losses estimated at one million dollars, but without any casualties.</li><li style=";text-align:left;direction:ltr"> Chile earthquake ( <strong>magnitude 8.8</strong> ): on <strong>02/27/2010</strong> , killing 525 people and destroying hundreds of buildings.</li><li style=";text-align:left;direction:ltr"> Ecuadorean coastal earthquake ( <strong>magnitude 8.8</strong> ): on 01/31/1906, killing nearly 1,000 people.</li><li style=";text-align:left;direction:ltr"> Rat Island earthquake - Alaska ( <strong>magnitude 8.7</strong> ): <strong>On 2/4/1965</strong> , this large earthquake caused a tsunami, but without major losses due to the scarcity of population and cities.</li><li style=";text-align:left;direction:ltr"> Sumatra earthquake - Indonesia ( <strong>magnitude 8.6</strong> ): This earthquake occurred on <strong>03/28/2005,</strong> killing <strong>1346</strong> people.</li><li style=";text-align:left;direction:ltr"> Assam earthquake in Tibet between India and China <strong>(magnitude 8.6):</strong> This earthquake occurred on <strong>8/15/1950,</strong> and caused the deaths of <strong>30 000</strong> people, destroying thousands of homes, temples and mosques.</li></ol>
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