Interesting Facts About Earthquake

• During 350 BC, the Greek scientist Aristotle acknowledged that in an earthquake, soft ground trembles more than tough rocks.

• In 1760, the correct reason of earthquakes was declared by a British engineer John Michell. He was one of the first fathers of seismology. He stated that earthquakes and the waves of energy that they create are caused by shifting of lots of rock miles beneath the surface.

• Human beings can detect sounds in the frequency range 20-10,000 Hertz. Nearly all earthquake waves have a frequency of less than 20 Hz; hence, the waves are frequently not heard. Majority of the echoing sound heard during an earthquake is the building, houses and its substances making a motion.

• Although Antarctica’s midland has very small ice quakes, however, they are more recurrent than earthquakes in Antarctica. The ice quakes are just like earthquakes, but they take place inside the ice sheets.

• The foremost registered proof of an earthquake has been found in the Shandong province of China during 1831. However, there is complete evidence that it began in 780 BC during the Zhou Dynasty in China.

• The world's most lethal earthquake was recorded during 1556 in central China. It mostly affected a region where majority of the inhabitants lived in caves engraved from soft rock. These homes were badly distorted during the earthquake, taking lives of around 830,000 people. This calamity was followed by another fatal earthquake which hit Tangshan, China, in 1976. More than 250,000 people were killed in this earthquake.

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