Earth Science Articles

• Tsunamis
  Natural Disasters
  Albert Einstein
  Quantum Physics
  Earthquakes
  Optics
   
  

  Seismic wave

  A seismic wave is a wave that travels through the Earth, most often as the result of a tectonic earthquake, sometimes from an explosion. There are two types of seismic wave, namely, 'body wave' and ... > more
• Geology
  Volcanoes
  Natural Disasters
  Earth Science
  Earthquakes
  Tsunamis
   
  

  Mantle plume

  A mantle plume is an upwelling of abnormally hot rock within the Earth's mantle. As the heads of mantle plumes can partly melt when they reach shallow depths, they are thought to be the cause of ... > more
• Geography
  Earth Science
  Earthquakes
  Geology
  Near-Earth Object Impacts
  Geomagnetic Storms
   
  

  Circle of latitude

  On the Earth, a circle of latitude or parallel is an imaginary east-west circle that connects all locations with a given latitude. The position on the circle of latitude is given by the longitude. ... > more
• Global Warming
  Oceanography
  Early Climate
  El Nino and La Nina
  Climate
  Geology
   
  

  Sequence stratigraphy

  Sequence stratigraphy is a relatively new branch of geology that attempts to link prehistoric sea-level changes to sedimentary deposits. The 'sequence' part of the name refers to cyclic sedimentary ... > more
• Earthquakes
  Natural Disasters
  Tsunamis
  Geology
  Earth Science
  Geography
   
  

  New Madrid Seismic Zone

  The New Madrid Seismic Zone, also known as the Reelfoot Rift or the New Madrid Fault Line, is a major seismic zone located in the Midwestern United ... > more
• Geology
  Earthquakes
  Earth Science
  Natural Disasters
  Near-Earth Object Impacts
  Atmosphere
   
  

  Crust (geology)

  In geology, a crust is the outermost layer of a planet. The crust of the Earth is composed of a great variety of igneous, metamorphic, and sedimentary rocks. The crust is underlain by the mantle. ... > more
• Oceanography
  Geography
  Global Warming
  Ecosystems
  Water
  Earth Science
   
  

  Ocean current

  An ocean current is any more or less permanent or continuous, directed movement of ocean water that flows in one of the Earth's oceans. The currents are generated from the forces acting upon the ... > more
• Global Warming
  Early Climate
  Climate
  Ice Ages
  Fossils
  Environmental Issues
   
  

  Geologic temperature record

  This article is devoted to temperature changes in Earth's environment as determined from geologic evidence on multi-million to billion (109) year time scales. The last 3 million years have been ... > more
• Earthquakes
  Natural Disasters
  Tsunamis
  Energy and the Environment
  Renewable Energy
  Environmental Science
   
  

  Moment magnitude scale

  The moment magnitude scale was introduced in 1979 by Tom Hanks and Hiroo Kanamori as a successor to the Richter scale and is used by seismologists to compare the energy released by ... > more
• Global Warming
  Geochemistry
  Air Quality
  Forest
  Climate
  Earth Science
   
  

  Carbon cycle

  The carbon cycle is the biogeochemical cycle by which carbon is exchanged between the biosphere, geosphere, hydrosphere and atmosphere of the Earth. The cycle is usually thought of as four major ... > more

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