Mount Pinatubo Eruption

In June 1991, the second largest volcanic eruption of the twentieth century* took place on the island of Luzon in the Philippines, a mere 90 kilometers (55 miles) northwest of the capital city Manila. Up to 800 people were killed and 100,000 became homeless following the Mount Pinatubo eruption, which climaxed with nine hours of eruption on June 15, 1991. On June 15, millions of tons of sulfur dioxide were discharged into the atmosphere, resulting in a decrease in the temperature worldwide over the next few years. Mount Pinatubo is part of a chain of composite volcanoes along the Luzon arc on the west coast of the island (area map). The arc of volcanoes is due to the subduction of the Manila trench to the west. The volcano experienced major eruptions approximately 500, 3000, and 5500 years...

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Article: Volcanoes. (volcanologists are scientists who study how forces and materials inside the earth cause volcanoes to erupt)

Article: Volcanoes. (volcanologists are scientists who study how forces and materials inside the earth cause volcanoes to erupt) You are walking along a mountain path. Suddenly the ground rumblets. Stream and hot ash rise from the mountain top. Red hot lava pours out. It's a volcano! Is this a scene from a dinosaur movie? No, it is just another work day for a volcanologist, or volcano scientist. Earth's Layers All the rumbling and shaking you feel are part of an eruption. What causes them? Until 30 years ago, no one really knew. Since then scientist have discovered that the Earth's surface, or crust, is broken into huge plates of solid rock. The plates move like giant icebergs over a layer of hot, gooey rock called the mantle. In some places, the plates pull away from each other. In others,...

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Volcanoes video

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