Volcanoes

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Volcanoes

• By Kirstie Rainford

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Eruptions

• Eruptions are happening all around the world
  while you are reading this there will be a
  volcano erupting right NOW!!

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St Helens

• Shaken by an earthquake measuring 5.1 on the
  Richter scale, the north face of this tall
  symmetrical mountain collapsed in a massive rock
  debris avalanche. Nearly 230 square miles of
  forest was blown over or left dead and standing.
  At the same time a mushroom-shaped column of ash
  rose thousands of feet skyward and drifted
  downwind, turning day into night as dark, grey
  ash fell over eastern Washington State and
  beyond. The eruption lasted 9 hours, but Mount
  St. Helens and the surrounding landscape were
  dramatically changed within moments.

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Volcanoes

• Without doubt, erupting volcanoes are the most
  awesome and terrifying sights in nature. In fact,
  their untamed destructive firepower has shaped
  and influenced many ancient cultures from
  Pompeii, to Japan.
• It's estimated that one in ten of the World's
  population live within 'danger range' of
  volcanoes. According to the Smithsonian
  Institute, there are 1511 'active' volcanoes
  across the globe, and many more dormant ones that
  could recharge at any moment.

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Under water volcano!

• The location of the active volcano appears to be
  in the Gorda tectonic ridge, about 2 miles below
  the ocean's surface. The ridge is part of a
  seafloor spreading system that wraps around the
  world's ocean floors for about 46,000 miles.
• Like 'Squeezed Toothpaste'
• The hot spots are formed where lava bubbles up
  from an underwater crack in the ocean floor and
  then spreads and extends the surface of the
  oceanic plate. The eruptions cause the Pacific
  Ocean floor to spread about 5.5 centimeters each
  year and are considered the "engine" of plate
  tectonics, which control nearly all geologic
  activity on the planet.
• "Underwater volcanoes are usually not explosive
  like many above-ground volcanoes," explains Fox.
  "It looks like toothpaste squeezing out of the
  ground and forming pillow-shaped layers of lava
  on the ocean floor."
• While most underwater volcanoes might not be as
  violent as ones above ground, they are more
  common. Fox says more than 90 percent of the
  Earth's volcanic activity is underwater and
  geologists estimate there are thousands of
  volcanoes on the ocean floor.

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I Hope You Have Learnt a Bit More Than You Knew
About Volcanoes

• Thank You