Earthquake tremors were felt in the Pitcairn Islands on Wednesday. Here its intensity was 6.3. There have been no reports of injuries or damage to property as a result of the earthquake. The National Center for Seismology contributed this knowledge.
How does an earthquake happen?
The collision of plates within the earth is the primary source of earthquakes. The earth’s seven continental plates revolve continually. When these plates collide at some place, a fault line zone is formed and the corners of the surface are twisted. Due to the bending of the corners of the surface, pressure is created there and the plates start breaking. Due to the breaking of these plates, the energy inside finds a way out, due to which the earth trembles and we call it an earthquake.
Earthquake intensity
Earthquakes with a magnitude of less than 2.0 on the Richter scale are classified as subtle and these earthquakes are not felt. Around 8,000 micro-quakes on the Richter scale are recorded every day around the world. Similarly, earthquakes with a magnitude of 2.0 to 2.9 have been kept in the minor category. 1000 such earthquakes happen every day, usually, we do not even feel it. Very mild earthquakes of magnitude 3.0 to 3.9 are recorded 49,000 times a year. They are felt but they hardly cause any harm.
Mild-grade earthquakes with a magnitude of 4.0 to 4.9 on the Richter scale are recorded approximately 6,200 times a year around the world. These tremors are felt, and objects around the house can be seen moving. However, they cause negligible damage.
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