21 th day Date 06.05.20 Lesson 2 Topic : Lightning and Earthquake

21 th day Date 06.05.20 Lesson 2 Topic : Lightning and Earthquake . In this video , we have discussed about causes of earthquake ,structure of earth ,tectonic plate  , Richter scale , seismograph , effect of earthquake and prevention from it . It also included a short film of mock drill  on safe saturday for prevention from earthquake.

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