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Science - Mount Krakatoa
Transcript of Science - Mount Krakatoa
Hydrosphere Explain the effect of the eruption on the
Atmosphere Date Lithosphere, being the crust (our ground) of the earth
would have been very destructed. The eruption,
which caused tsunamis, destructed everything in their
path. It destroyed 2/3 of the island (Krakatoa), destroying all vegetation and soil. Given barely anyone lives on the volcano, practically no homes or buildings were destroyed, and only 1 or 2 people died due to the
actual explosion, the other 36,417 people killed were due to the Tsunamis it caused to nearby coastlines and throughout the Sunda Straight. Pyroclastic flows travelled as far as 40km from the Island, sea levels rose, as the volcanoe went from being 450m above sea level to most of the island being 250m below sea level. The eruption caused Tsunami's 40m high to destruct multiple coastlines surrounding Krakatau, including Java and Sumatra. It caused the collapse of the unsupported volcanic chambers which then formed the huge underwater caldera. Ships caught in the Tsunamis met similar fate to those killed on nearby islands and in towns. A cloud of Volcanic dust dissipated into the atmosphere, creating green sunrises and red sunsets. It lowered global temperatures as much as half a degree for 5 years following the blasts. The eruption polluted the air and volcanic dust was extremely present after the eruption, increasing greenhouse gases and atmosphere pollution levels. Huge volcanoes often inject ash so high into the atmosphere they block out sunlight for a particular amount of time. In the weeks following the eruption, the fragments of tephra and dust that were propelled kilometres into the atmosphere, began to make a ring around the equator. This ring would remain suspended there for years and would cause solar effects and atmospheric hazing to the incoming light. Enormous volumes of sulfur dioxide gas molecules that were ejected into the atmosphere combined with water to make sulfuric acid. Acidic aerosols blocked enough sunlight to drop the Earth's temperature by several degrees for a few years. Place General August 26-28th, 1883
First eruption at 5.30am,then at 6.42am, 8.20am and 10am Island in Indonesia,
belongs to Pacific
Ring of Fire Krakatoa was dormant until May 20, when it erupted. It erupted continuously until August 26, when four catastrophic eruptions occurred, causing tsunamis and killing huge numbers of people. No one actually died from the explosion, however the sound was so loud it was heard from Australia. It destroyed 2/3 of the entire island, and is one of the worst eruptions to occur in history. Explain the effect of the eruption on the
Biosphere The eruption on the island, caused all plants to be destroyed and blew away 2/3 of the island, undoubtedly killing animals too. The Tsunamis it caused destructed everything in their path, including killing thousands and thousands of people in Java and Sumatra, aswell as undoubtedly animals and plants on the islands and throughout the Sunda Strait.These waves destroyed 295 towns and villages in the Sunda Strait in Western Java and Southern Sumatra.Sounds of the explosion were heard as far as over 4500km away and covered 1/13th of the Earth's surface.