Volcano Articles

• Volcanoes
  Geography
  Rainforests
  Environmental Policy
  Global Warming
  Climate
   
  

  Mount Kilimanjaro

  Kilimanjaro is a mountain in northeastern Tanzania. Kilimanjaro is the tallest free-standing mountain rise in the world, rising 4600 meters (15,000 ft) from the base, and includes the highest peak in ... > more
• Geology
  Earth Science
  Atmosphere
  Earthquakes
  Geochemistry
  Natural Disasters
   
  

  Geophysics

  Geophysics, the study of the earth by quantitative physical methods, especially by seismic reflection and refraction, geodesy, gravity, magnetic, electrical, electromagnetic, and radioactivity ... > more
• Water
  Geography
  Floods
  Environmental Policy
  Drought Research
  Earth Science
   
  

  Waterfall

  A waterfall is usually a geological formation resulting from water, often in the form of a stream flowing over an erosion-resistant rock formation that forms a sudden break in ... > more
• Earthquakes
  Geology
  Natural Disasters
  Tsunamis
  Geography
  Earth Science
   
  

  Plate tectonics

  Plate tectonics is a theory of geology developed to explain the phenomenon of continental drift and is currently the theory accepted by the vast majority of scientists working in this area. In the ... > more
• Geography
  Earth Science
  Earthquakes
  Geology
  Oceanography
  Natural Disasters
   
  

  Mountain

  A mountain is a landform that extends above the surrounding terrain in a limited area. A mountain is generally higher and steeper than a hill, but there is considerable overlap, and usage often ... > more
• Acid Rain
  Air Pollution
  Pollution
  Air Quality
  Soil Types
  Forest
   
  

  Acid rain

  Acid rain is defined as any type of precipitation with a pH that is unusually low. Dissolved carbon dioxide dissociates to form weak carbonic acid giving a pH of approximately 5.6 at typical ... > more
• Atmosphere
  Air Quality
  Air Pollution
  Climate
  Geochemistry
  Environmental Issues
   
  

  Earth's atmosphere

  Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity. It contains roughly 78% nitrogen and 21% oxygen 0.97% argon and carbon dioxide 0.04% trace ... > more
• Water
  Oceanography
  Marine Biology
  Ecosystems
  Fish
  Geography
   
  

  Seawater

  Seawater is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of approximately 3.5%, or 35 parts per thousand. This means that for every 1 litre (1000 mL) of ... > more
• Ancient Civilizations
  Volcanoes
  Archaeology
  Lost Treasures
  Natural Disasters
  Cultures
   
  

  Pompeii

  Pompeii is a ruined Roman city near modern Naples in the Italian region of Campania, in the territory of the commune of Pompei. It was destroyed during a catastrophic eruption of the volcano Mount ... > more
• Ice Ages
  Global Warming
  Early Climate
  Climate
  Snow and Avalanches
  Geography
   
  

  Little Ice Age

  The Little Ice Age (LIA) was a period of cooling lasting approximately from the 14th to the mid-19th centuries, although there is no generally agreed start or end date: some confine the period to ... > more
• Water
  Geography
  Ecosystems
  Global Warming
  Ecology
  Floods
   
  

  Lake

  A lake is a body of water or other liquid of considerable size surrounded entirely by land. A vast majority of lakes on Earth are fresh water, and most lie in the Northern Hemisphere at higher ... > more
• Geography
  Earthquakes
  Oceanography
  Geology
  Natural Disasters
  Tsunamis
   
  

  Oceanic trench

  The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor. They also are the deepest parts of the ocean floor. Trenches define one of the most important ... > more

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