ADVANTAGES AND DISADVANTAGES OF VOLCANOES adv and disadv.pdf · Nevado Philippinesdel Ruiz,...
Transcript of ADVANTAGES AND DISADVANTAGES OF VOLCANOES adv and disadv.pdf · Nevado Philippinesdel Ruiz,...
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ADVANTAGES AND
DISADVANTAGES OF VOLCANOES
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NEW LAND IS CREATED – LAVA FLOWS ADD EXTRA AREA TO PLACES AND VOLCANIC ISLANDS ARE FORMED – EG. SURTSEY AND HAWAII
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MINERALS FROM BENEATH THE SURFACE OF THE EARTH ARE BROUGHT TO THE SURFACE IN THE LAVA AND THESE CAN BE MINED – IRON ORE IN THE AMAZON BASIN
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WATER HEATED UNDERGROUND BY COMING IN CONTACT WITH LAVA CAN BE USED TO GENERATE ELECTRICITY - ICELAND
MINERAL AND SPA HOTELS CAN USE HEATED WATER AS HEALTH BENEFITS FOR TOURISTS. EG ICELAND
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Tourist attractions – active, dormant and extinct volcanic structures attract tourists.
GIANT’S CAUSEWAY, ANTRIM
MT. ETNA, SICILY
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FERTILE SOIL – WHEN LAVA COOLS IT BECOMES BASALT ROCK – THIS WEATHERS TO PRODUCE MINERALS THAT MAKE THE SOIL FERTILE. EG THE ISLAND OF JAVA
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WHEN MAGMA COOLS UNDER THE SURFACE GRANITE ROCK IS FORMED. THIS CAN BE USED IN KITCHENS, TROPHIES,
GRAVESTONES, HOUSES ETC.
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DISADVANTAGES OF
VOLCANOES
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Property is destroyed EG THE
Village of Kalapana in Hawaii.
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Landslides formed by heat from lava melting ice on mountaintops – lahars – destroys land, buildings and kills people. Eg Mt St Helens
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COMMUNICATION NETWORKS – ROADS, RAILWAYS, AIRPORTS CAN BE BLOCKED AND DESTROYED DURING AN ERUPTION.
Eg THE TOWN OF GOMA IN DEMOCRATIC REPUBLIC OF THE CONGO
EG THE ISLAND OF MONSERRAT
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PEOPLE KILLED Mt. Tambora, Indonesia April 10 - 15, 1816 Death Toll: 92,000
Mt. Pelee, West Indies April 25 - May 8, 1902 Death Toll: 40,000
Mt. Krakatoa, Indonesia August 26 - 28, 1883 Death Toll: 36,000
Nevado del Ruiz, Columbia November 13, 1985 Death Toll: 23,000
700 Mount Pinatubo
Philippines 1991
245 Nyiragongo Democratic Republic of the Congo
2002
152 Mt Ruapehu, Tangiwai
New Zealand 1953
120 Mount Tarawera
New Zealand 1886
57 Mount St. Helens
United States 1980