SOME NATURAL PHENOMENA
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This document discusses two natural phenomena: lightning and earthquakes. It describes how lightning is formed from electric charges in clouds and how it can be conducted safely to the ground using lightning rods. It also explains that earthquakes are caused by movements in the layers of the earth and discusses how their intensity is measured and how structures can be protected against earthquakes.
SOME NATURAL PHENOMENA
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- 3. Some natural phenomena example :- Earthquakes lightning
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- 13. 13 Lightning:-
- 19. 19 Safety during lightning :-
- 20. 20 earthquakes
- 23. 23 Structure of the earth
- 24. 24 Structure of the earth :-
- 25. 25 Structure of the earth pic. :-
- 27. 27 Occurrence of earthquakes :-
- 28. 28 Measuring intensity of earthquakes
- 29. 29 Measuring intensity of earthquakes :-
- 30. 30 Measuring intensity of earthquakes pic. :-
- 33. 33 Protection against earthquakes pic. :-
- 34. 34