hamed sabbagh
07-05-2012, 14:28
Super volcano
Yellowstone national park ,Wyoming , use
A hot July day, and some of the three million visitors who come to the park ever y year are watching one of the geysers erupt. Everyone is impressed,
But as they chatter excitedly and eat their ice-creams ,not many of them realize that they are standing on top of the largest active volcano in the world .scientists have known for a long time that yellowstone is a volcanic area. But the strange thing is that until the 1960s,none of them could find volcano anywhere in the park. Then ,new photos taken by NASA showed the reason why _the whole park,9,0000 square meters of it, is volcano!
Volcanoes like yellowstone are called ,super volcanoes , because they are so huge and dangerous- 1,000times more powerful than ordinary volcanoes .there are about 40 of them on earth ,but none of themhas erupted recently. The most recent was 74,000 years ago in Indonesia .the last time yellowstone park erupted was 640,000years ago.
But what would happen if the yellowstone volcano erupted again today?
Here are the events that might follow:
Day on-yellowstone park, USA
If the volcano erupted ,hot ash and rock would shoot up into the air at 250 mph .the cities of den ever and salt lake would be destroyed immediately ,and 87,000pepole would die. Eventually the ash would cover ¾ of the us ,and drinking water and food crops would be contaminated.
Yellowstone national park ,Wyoming , use
A hot July day, and some of the three million visitors who come to the park ever y year are watching one of the geysers erupt. Everyone is impressed,
But as they chatter excitedly and eat their ice-creams ,not many of them realize that they are standing on top of the largest active volcano in the world .scientists have known for a long time that yellowstone is a volcanic area. But the strange thing is that until the 1960s,none of them could find volcano anywhere in the park. Then ,new photos taken by NASA showed the reason why _the whole park,9,0000 square meters of it, is volcano!
Volcanoes like yellowstone are called ,super volcanoes , because they are so huge and dangerous- 1,000times more powerful than ordinary volcanoes .there are about 40 of them on earth ,but none of themhas erupted recently. The most recent was 74,000 years ago in Indonesia .the last time yellowstone park erupted was 640,000years ago.
But what would happen if the yellowstone volcano erupted again today?
Here are the events that might follow:
Day on-yellowstone park, USA
If the volcano erupted ,hot ash and rock would shoot up into the air at 250 mph .the cities of den ever and salt lake would be destroyed immediately ,and 87,000pepole would die. Eventually the ash would cover ¾ of the us ,and drinking water and food crops would be contaminated.