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Geology: Featured Facts
Plate Tectonics
Geology / Plate Tectonics

The diagram shows the supercontinent Pangaea (meaning 'all lands' in Greek). In geologic terms, a plate is a large, rigid slab of solid rock. The word tectonics comes from the Greek root 'to build.' Putting these two words together, we get the term plate tectonics, which refer continue reading this fact

Submarine Volcanoes
Geology / Volcanos

Submarine eruptions at mid-ocean ridges produce fresh lava flows like these 'pillow' lavas, that form as lava slowly oozes out of a fissure on the seafloor. These lavas erupted from the southern part of the Juan de Fuca Ridge, lying about 150 miles off the coast of Oregon. This photo was taken about 5 years after the eruption. Submarine volcanoes and volcanic vents are common features on certain zones of the ocean floor. Some are active at the present time and, in shallow water, disclose their presence by blasting steam and continue reading this fact

How Much Water in an Inch of Snow?
Geology / Weather

Cat checks out the snow pack. If the snowfall amounts were translated into equivalent volumes of water - then how much water would that be? Using a rule of thumb that each 10 inches of snow, if melted, would produce one inch of wa continue reading this fact

All Facts
Earth Measurement:
  1. The Richter Magnitude Scale
  2. What is Geodesy?
  1. Earthquake Weather?
  2. Silent Earthquakes
  3. The San Andreas Fault
  4. Was That The Big One? Depends On How You Measured It.
  5. When This Lake 'Burps,' Better Watch Out!
  1. Fossil Energy - The Basics
  2. Natural Gas - The Blue Flame
  3. There's Oil Down There
  1. The Hole Scoop on Ozone
  2. What is Haze?
  1. A Continent In Deep Freeze
  2. A National Park of Caves
  3. A River of Sand
  4. Bryce Canyon
  5. Crater Lake
  6. Devils Postpile National Monument
  7. Geology Played Key Role in the End of the Civil War
  8. Heading For The Badlands
  9. Salty Remnants At Death Valley's Badwater
  10. The Importance of Cave and Karst Systems
  11. What's So Bad About The Badlands?
  12. White Sands National Monument
  1. Flipping Magnetic Fields
  2. Is Earth Getting Fatter Around the Belt?
  3. Landslides and Mudflows
  4. Pointing North
  5. Under The Crust
  6. Water In The Ground
  7. What are Hoodoos?
  1. Arctic Carbon a Potential Wild Card in Climate Change Scenarios
  2. Glaciers: Rivers of Ice
  3. Retreating Glaciers Spur Alaskan Earthquakes
  4. The World's Biggest Popsicle
Global Climate Change:
  1. Antarctica and Climate Change
  2. CALIPSO in 2004
  3. Distant Mountains Influence River Levels 50 Years Later
  4. Finding Ice In The Rocks--Evidence Of Earth's Ice Ages
  5. Getting Burned By Acid Rain
  6. Global Warming?
  7. How Do We Predict The Climate--100,000 Years Ago?
  8. NASA Explains Dust Bowl Drought
  9. Surprise! Lightning Has Big Effect On Atmospheric Chemistry
  10. The Good, the Bad and the Ozone
  11. What Are The Differences Between Global Warming, Greenhouse Effect, Greenhouse Warming, And Climate Change?
  12. What Causes Ice Ages....Or Global Warming?
  13. Will Runaway Water Warm the World?
Minerals and Gems:
  1. All That Glitters
  2. Diamonds Improved by Irradiation?
  3. Our Most Abundant Fossil Fuel
  4. Robin's Egg Blue
  5. Rock, Mineral, Crystal, or Gemstone?
  6. The Mineral Chalcedony
  7. You, Graphite and Diamonds
  1. A Big, Big Wave
  2. A Undersea View of Our Earth's Geography
  3. Is the Dead Sea really dead?
  4. Is The Sea Really On The Level?
  5. Seamounts - Underwater Mountains
  6. What is an Estuary?
Plate Tectonics:
  1. Pangea
  2. Plate Tectonics
  1. Igneous Rocks, Born of Fire
  2. Metamorphic Rock
  3. Sedimentary Rock
  4. Weathering, Erosion, and Deposition
  5. Zeolites: The Secret Ingredient
  1. Old Faithful - Thar She Blows!
  1. 1816 - The Year Without A Summer
  2. A Voggy Day On The Big Island
  3. Haleakala Crater
  4. Pyroclastic Flows: Deadly Rivers of Rock
  5. Submarine Volcanoes
  6. Types of Volcanoes
  7. What is Volcanic Ash?
  1. A Great Sunset Takes A Few Clouds
  2. A Hurricane In Brazil?
  3. How Much Water in an Inch of Snow?
  4. Hurricanes, The Basics
  5. Lightning Striking Again
  6. Man Made Clouds
  7. Predicting Floods
  8. The Hydrology of Drought
  9. The Importance Of Clouds And Aerosols To Climate Change
  10. The Saffir-Simpson Hurricane Scale
  11. Tornadoes
  12. Wetter not Necessarily Better in Amazon Basin
  13. What Are The Dangers Of Lightning?
  14. What Are The Key Ingredients For An Avalanche?
  15. What Causes The Blue Color That Sometimes Appears In Snow And Ice?
  16. What Is Air Pressure?
  17. What Is The Most Damaging Hazard From A Hurricane?
  18. What's In A Name?
  19. Who Named The Cloud Types?
  20. Why Don't We Try To Destroy Tropical Cyclones?

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