Earthquakes are caused by a sudden release of energy in the earth’s crust when two sections of the crust slip past each other.The size of an earthquake is determined by the Richter magnitude scale, which ranges from 0-10. Earthquakes are sometimes classified as:
● Micro Earthquakes. Earthquakes that register less than 2.0 on the Richter scale are called micro earthquakes and are typically not felt at the surface. Micro earthquakes are so frequent that it is estimated that they may be continually occurring or that there are several million that occur each year.
● Minor Earthquakes: Earthquakes that register 2.1 to 2.9 on the Richter scale are called minor earthquakes and occur over one million times per year. Minor earthquakes can be felt slightly by some people, but cause no damage to buildings.
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