Earthquakes
everyday about two hundred and fifty earthquakes take place around the globe.in total ,one million earthquakes occur each year.the death toll resulting from this from this violent act of nature amounts to about fourteen thousand annually.
how does this natural disaster come about? the earth's crust is made up of plates of rocks.it is unstable so there is constant movement amongst these plates.this causes strains on the crust until violent shocks which we call earthquakes result.
earthquakes can be measured with seismograph.this is a sensitive apparatus which record the intensity of the earthquakes.an earthquakes is measured on a scale of one to ten.
a large earthquakes can release energy as much as two hundred millions tonnes of explosive.although scientists are able to make use of these instruments to predict earthquakes,they are never a hundred percent accurate.this the only way to prepare for an earthquakes resistant buildings.
the greatest earthquakes occurred in 1906 in san francisco in america.it measured 8.9 on the scale.homever,it was not as fatal as the shensi earthquake in china in 1556 which claimed about 830.000 lives.there was quake in nias,indonesia in 2004.the sclae was about 8.7 richter and it was also included in a big one.there were many victims and collapsed buildings at the moment.
everyday about two hundred and fifty earthquakes take place around the globe.in total ,one million earthquakes occur each year.the death toll resulting from this from this violent act of nature amounts to about fourteen thousand annually.
how does this natural disaster come about? the earth's crust is made up of plates of rocks.it is unstable so there is constant movement amongst these plates.this causes strains on the crust until violent shocks which we call earthquakes result.
earthquakes can be measured with seismograph.this is a sensitive apparatus which record the intensity of the earthquakes.an earthquakes is measured on a scale of one to ten.
a large earthquakes can release energy as much as two hundred millions tonnes of explosive.although scientists are able to make use of these instruments to predict earthquakes,they are never a hundred percent accurate.this the only way to prepare for an earthquakes resistant buildings.
the greatest earthquakes occurred in 1906 in san francisco in america.it measured 8.9 on the scale.homever,it was not as fatal as the shensi earthquake in china in 1556 which claimed about 830.000 lives.there was quake in nias,indonesia in 2004.the sclae was about 8.7 richter and it was also included in a big one.there were many victims and collapsed buildings at the moment.
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