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What is a Volcano?

What is a Volcano?

What is nature’s most powerful, most destructive, most dangerous form? Some would say an earthquake, others a cyclone. However, these phenomenon are relatively smaller and less destructive in scale compared to the fury of a volcano. Fourteen miles southeast of Naples in Italy, lie the remains of an ancient town called Pompeii. The city flourished under the shadows of the towering Mount Vesuvius. In 79 AD, the volcano erupted, destroying the cities of Pompeii, Herculaneum, Stabiae and Torre Annunziata....

The Secrets of the Ocean Floor

The Secrets of the Ocean Floor

It is one question that is not a quizmasters’ favourite: which is the tallest mountain on earth? The answer is bound to come fast and snappy – Mt Everest, at a height of 29,000 feet. But that is only on land. For, if you were to measure from the bottom of the ocean, the tallest mountain in the world will probably be Mauna Kea in Hawaii. It rises more than 15,748 feet under the sea and another 13,779 feet above it....

Volcanoes

Volcanoes

Volcanoes are nature’s wildest and most destructive force. Human history tells tales of the fury and destruction of these ‘mountains of fire’.

What are Volcanic Tubeworms?

What are Volcanic Tubeworms?

In order to raise chicks the farmer keeps the eggs warm and is careful not to crush them. But when scientists in the University of Southern California rear tubeworms, they keep the immature worms very cold and under high pressure. You would think the scientists are being cruel by subjecting these little worms to such extreme conditions. They are not. The worms can thrive only under these circumstances, because they live in the deep sea where it is very cold....

The Hot and Sizzling Volcano

The Hot and Sizzling Volcano

Despite being the subject of considerable scientific study, Volcanoes continue to remain both dramatic and unpredictable. In 1991 Mount Pinatubo, 100 km north of the Philippines capital Manila, suddenly burst into life after lying dormant for more than six centuries. Most of the world’s active volcanoes occur in a belt around the Pacific Ocean, on the edge of the Pacific plate called the Ring of Fire. Indonesia has the greatest concentration with 90 volcanoes, 12 of which are active....

Rocky Planet of Fire and Ice

Rocky Planet of Fire and Ice

Would you believe it? The soft sand that we sink into on the beach is actually rock? Sand is what a rock becomes after years of being worn down by rivers. Years of sea waves crashing against huge rocks and cliffs makes rocks break into small particles. And ultimately, they end up as sand. The colours of sands — yellow, red, grey, black — depend on the kind of rock it comes from. Sometimes desert sand is carried by winds across great distances, to seasides, increasing the amount of sand in the sea....

Volcano Erupts in Alaska

Where: Anchorage, Alaska, USA March 23, 2009 : The 3,100 metre high Mount Redoubt, an active volcano, erupted six times in 36 hours starting Sunday, March 22, 2009. It threw up an ash plume almost 15 kilometres high into the air. Scientists had begun issuing alerts 48 hours earlier as they were recording 40 to 50 earthquakes every hour during that period. Residents of Anchorage, Alaska’s biggest town, which is about 150 kilometres west of the volcano, experienced falls of fine ash dust....

Volcano Erupts in Chile

Where: Santiago, Chile April 4, 2009 : Llaima volcano, which is located in Chile’s scenic lake region, erupted on Saturday, 4 April, 2009. It is one of the most active volcanoes in South America. It emitted a river of lava more than 1,000 metres long. People could see bright red bursts of lava in the night sky during the eruptions. Explosions reaching 600 metres above the crater, and falling ash were also visible. The lava and hot gases from the eruption have melted the snow on the sides of the volcano....

The Luckiest Men?

St Pierre was a town of some 30,000 inhabitants, lying in a mile-long, crescent-shaped strip in the Martinique Islands, in the Caribbean or West Indies. The city had a grand backdrop: the 4,430 feet high Mount Pelee or ‘bald’ mountain. The mountain lives on but the town has become a part of its fiery history. Mount Pelee is a dormant volcano that erupts once in a while and then lies cold for a long time and without any activity....

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