Old Faithful Geyser

Sunday, August 30, 2009

Evaluating- Pros and Cons of a Natural Disaster

Some horribly hazardous reasons why living near a volcano is dangerous.
  • Hundreds of millions people have been killed by volcanoes alone.
  • Lava can burn and bulldoze everything in its path.
  • Ash can suffocate people, cut off communications and destroy farmer's fields and crops.
  • In an eruption, you could lose your house, even your life. It takes a few minutes to destroy an area, but hundreds of years to recover.
  • A volcanic eruption can affect the world's weather. It blocks out the sun causing famine, and also cause disease because of ash.
  • It costs millions and millions of dollars to clean up and rebuild.

Some remarkable reasons for living near a volcano

  • Fantastically fertile soil. Volcanic soil is the richest on the earth. It is full of nutrients to help plants grow
  • Cheap central heating. Near a volcano, underground water gets heated to about 150 degrees centigrade. This can be pumped up to people's houses directly for instant hot water, or be converted into cheap electricity. It's called geothermal energy, and it won't run out. This means you can grow bananas and pineapples in geothermal greenhouses
  • Marvellous Metals. Copper, lead, tin, silver and gold are some of the few metals that are found in magma.
  • Gorgeous Gemstones. Gems are found deep inside the earth. So when a volcano erupts so do some gems. Diamonds and red beryls are found in volcanoes too. Find one of these gems and you could be seriously rich

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Applying-Layers of the Earth