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Why do earthquake wave develop shadow zone? In 80wards |
Answer» The\xa0shadow zone\xa0is the area of the earth from angular distances of 104 to 140 degrees from a given\xa0earthquake\xa0that\xa0does\xa0not receive any direct P\xa0waves. The\xa0shadow zone\xa0results from S\xa0waves\xa0being stopped entirely by the liquid core and P\xa0waves\xa0being bent (refracted) by the liquid core.\xa0The\xa0earthquake waves develop shadow zones\xa0because: (i)The P and S\xa0waves\xa0follow a curved path in the interior of the earth which proves that the density increases inside the earth. (iii)On reaching the core \'S\'\xa0waves\xa0disappear and P\xa0waves\xa0are refracted as a result there is no\xa0wave\xa0for a distance. | |