Tsunamis
Earthquakes are a type of natural disaster that occur when the tectonic plates underneath the earth's surface stress and overcome the friction. It releases energy in waves and travels through the earth's crust, this is what causes the shaking feeling during an earthquake. Earthquakes happen more than you think, it is estimated over 500,000 each year! Only 20% out of 500,000 are felt but humans and an average of 100 cause damage.
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