Content Index


  • Acre-Foot - unit of volume used to measure large amounts of water
  • Acrocanthosaurus - the official state dinosaur of Oklahoma
  • Agatized Fossil Coral - fossilized remains of ancient marine life
  • American Bison - a large mammal that was a key natural resource for Native Americans
  • Amethyst - a purple variety of quartz
  • Ammonite - an extinct marine animal found as a fossil in parts of Oklahoma 
  • Aquifer - large underground rock that contains water
  • Arbuckle Mountains - ancient mountain range in the Davis, OK area
  • Arkansas River - a major tributary of the Mississippi that flows through Colorado, Kansas, Oklahoma and Arkansas
  • Artesian Well - a naturally flowing water well supplied by water from pressured aquifers below


  • Basalt - an igneous rock formed by the cooling of lava
  • Biological Weathering - the breakdown of rocks by plants or animals
  • Biotite Mica - type of aluminum silicate mineral
  • Black Mesa - a large mesa that stretches through Oklahoma, New Mexico and Colorado
  • Brackish - the condition of water containing bot fresh and salt water
  • Browns Canyon - A Colorado canyon eroded by the Arkansas River
  • Buffalo Kill Site - a landform created by water which affected animals and people’s survival in the Oklahoma plains.


  • Calcite - a mineral containing Calcium, Carbon and Oxygen. Common component of limestones, or "carbonate" rocks
  • Canyon - a very deep crevice carved in stone due to erosion
  • Capulin Volcano - a nonactive volcano in New Mexico
  • Carbon Dioxide - A gas common on in Earth's atmosphere containing carbon and oxygen. When carbon dioxide is dissolved in liquid water, carbonic acid forms, which causes many changes to certain rock types, such as limestones.
  • Chemical Weathering - the breaking down of rock by chemical reaction rather than a physical process
  • Chickasaw National Recreation Area - a natural area in the Arbuckle Mountains near Sulphur, OK
  • Cholla - a particularly formidable type of cacti typically found in southwestern deserts
  • Cimarron River - a tributary of the Arkansas River that flows through several states including Oklahoma
  • Clasts - small fragments of rocks that make up other, larger rocks
  • Condensation - The conversion of water vapor gas to liquid water
  • Conglomerate - coarse grained sedimentary rocks made up of smaller rock fragments
  • Copper - a soft, very conductive metal
  • Coprolite - fossilized poop
  • Crater of Diamonds State Park - an Arkansas destination where visitors dig for diamonds
  • Crinoid - marine animal fossil
  • Crystal - inorganic, natural solid matter with known composition and ordered internal structure


  • Dam - a barrier that restricts the flow of water
  • Delta - a landform created by the deposition of sediment from a river as it meets a larger body of water
  • Desert Rose - ornate gypsum crystals
  • Desmond Discord - CLASSIFIED
  • Devon Energy Center - the tallest building in Oklahoma
  • Dike - a rock that formed in a fracture of another rock
  • Diplomystus Fossil - fossilized remains of an ancient fish


  • Erosionthe movement of sediment, created through weathering processes, from one place to another. 
  • Estemite - A mythical rare mineral with high power generation potential that fuels our equipment, especially the Terravator
  • Evaporation - The conversion of liquid water to water vapor
  • EveryDay Earth Corps - a secret organization dedicated to cataloging, investigating and understanding the mysteries of the natural world


  • Fern Imprint - imprint fossil of ancient vegetation
  • Floodplain - a low lying area of land next to a body of water which floods when there is an excess of water
  • Fossil Sand Dollar - fossilized remains of a sea urchin
  • Fracture - A break or crack in a rock
  • Frost Wedging - the process of water entering cracks in rock, freezing & expanding, and breaking the rock apart


  • Gabbro - an intrusive igneous rock, typically dark in color
  • Galena - the most important ore of lead
  • GeoGarage - the part of EDE headquarters where Corps members conduct experiments
  • Glacier - large, slow moving accumulation of ice
  • Gloss Mountains - a series of buttes & mesas in northwestern Oklahoma
  • Goddard Youth Camp - an educational facility in the Arbuckle Mountains region
  • Granite - a type of felsic intrusive igneous rock
  • Groundwater - water that's underground in spaces in rocks
  • Gulf Stream - a warm and fast current of water in the ocean


  • Halite - mineral form of sodium chloride, aslo known as "rock salt"
  • Heavener Runestone Park - a natural area in southeastern Oklahoma that claims to have an inscribed runestone whose origins are uncclear
  • Hematite - a type of iron ore
  • Honey Creek - a spring fed water flow in central Oklahoma
  • Hydrologic Cycle - Refers to the set of natural processes by which water is cycled through Earth's various systems, powered by the Sun's energy and Gravity.


  • Ice - the solid phase or state of water, which forms at or below 0 degrees Celsius (32 F)
  • Igneous Rocks - a rock type that forms from the cooling of molten rock
  • Infiltration - Water's ability to soak into the ground


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  • Labradorite - a colorful type of feldspar
  • Lake - a large place for freshwater storage
  • Lake Murray - a central Oklahoma lake
  • Lake Texoma - large lake on the Oklahoma/Texas border
  • Levee - a natural or manmade barrier containing a body of water
  • Liquid Water - the liquid phase or state of water
  • Limestone - a type of carbonate rock, composed principally of calcite (Calcium Carbonate). One of the most common sedimentary rocks, limestone is reactive with acids and decomposes to form caves, sinkholes and karst.
  • Lithoshpere - the outer part of earth made up of dirt, rocks and other inorganic material
  • Little Sahara State Park - an Oklahoma state park containing many large sand dunes


  • Mackerel Shark Tooth - fossilized remains of an ancient fish
  • Matter - anything that has mass and takes up space
  • Megalodon Tooth - the scariest part of a scary prehistoric shark
  • Metamorphic Rock - a rock type formed by the transformation of other rocks due to heat and pressure
  • Mineral - a mineral is the basic unit of the Earth, a specific combination of chemical elements or atoms arranged in a crystalline structure, occurring naturally, in solid form and having a specific composition.
  • Mineral Precipitation - the expulsion of dissolved minerals from water
  • Mississippi River - one of the largest and most historically important rivers in North America
  • Moraines - piles of boulders deposited by glaciers
  • Morrison Formation - large rock formation known for its fossils
  • Muscovite Mica - a mineral known for its thin flakes


  • Nanodrop - A one-of-a-kind sensor capable of tracking a water drop in various phases across the landscapes


  • Obsidian - a type of volcanic glass
  • Ocean Current - a steady, continuous stream of water within the ocean
  • Old River Control Structure - a Louisiana facility that helps regulates flooding of the Mississippi River
  • Ouachita Mountains - a mountain range in southeastern Oklahoma and western Arkansas


  • Paradoxides Trilobite - genus of a large, ancient arthropod
  • Percolation - Water's ability to move between pores in a substance from one point to another
  • Permeability - The ability for fluids like water to move between pores in a rock, allowing fluids to migrate large distances through seemingly solid objects.
  • Petrified Wood - a type of fossilized vegetation
  • Phacops Trilobite - genus of an extinct marine arthropod
  • Phase - The physical state of matter, be it gas, liquid or solid. Water may be water vapor (gas), liquid water, or ice.
  • Polar Molecule - a molecule like water with a strong electrical charge on one end, which can dissolve many solids
  • Pores - Empty space in a rock
  • Porosity - The amount of a rock which contains empty or fluid filled holes, or voids called pores.
  • Precipitation - The return of water to the earth as gravity pulls liquid or solid ice back to Earth
  • Price's Falls - an Oklahoma waterfall in the Arbuckle Mountains region
  • Purgatoire Formation - formation made of sandstones and shales
  • Pyrite - a shiny iron sulfide mineral


  • Quarry - an open pit mine from which rock is extracted
  • Quartz - Second most common mineral on Earth. Composed of silicon and oxygen.


  • Rain - precipitation of water as a liquid
  • River - a large moving body of water which serves to store and transport water, usually fresh, across the landscape
  • Rock Flour - very fine grained particles of rock
  • Rocky Mountains - large North American mountain range
  • Rose Quartz - pink variation of quartz
  • Rose Rock - the red, rose-shaped State Rock of Oklahoma
  • Royal Gorge - a large Colorado canyon of the Arkansas River


  • Sandstone - a medium-grained clastic sedimentary rock made up of 0.2-2mm sand sized sediment grains. The grains are often made up of hard, resistant minerals such as quartz.
  • Scoria - volcanic igneous rock
  • Sediment - bits and pieces of rock produced from pre-existing rocks by weathering and erosion by wind, ice, and water and often deposited in another place.
  • Sedimentary Rocks - rocks formed by the deposition and compression of sediment (smaller chunks of rocks and/or life forms)
  • Selenite - a crystallized form of gypsum
  • Shalea very fine-grained, clastic sedimentary rock made up primarily of silts and clay minerals, and in some cases, organic material
  • Spheroidal Weathering - a type of chemical weathering that results in spherical layers of rock 
  • Silt - very fine grained sediment
  • Spring - A place where water emerges as groundwater into the surface water system
  • Snow - precipitation of water as a solid
  • Solution - a mixture made of one substance dissolved in another
  • St. Mary's Glacier - an American glacier located in Colorado's Arapaho National Forest (and near the vicinity of Desmond Discord's secret stronghold) 
  • Stratalyzer – CLASSIFIED
  • Sulfur - a common chemical element
  • Surface Runoff - excess water from precipitation that flows along the ground
  • Swamp - a forested wetland ecosystem


  • Terravator – CLASSIFIED
  • Topaz - a common gemstone found in a variety of colors
  • Transpiration - the evaporation of water from plant leaves
  • Travertine - a limestone deposited by springs
  • Tri-State Mining District - an historic lead & zinc mining region located in parts of Oklahoma, Missouri & Kansas
  • Tufa - a rock containing pores that was formed from mineral precipitation
  • Turner Falls - one of the tallest waterfalls in Oklahoma
  • Turritella - fossilized sea snails


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  • Volcano - a rupture in the ground that allows molten rock to escape
  • Vug - an empty space within a rock formation


  • Washita River - a river in Texas & Oklahoma that joins with the Red River
  • Water - A combination of two hydrogen atoms and one oxygen
  • Waterfall - the flow of water over a steep drop
  • Water Vapor - the gas phase or state of water
  • Weathering -  physical, chemical or biological processes that cause rocks and other earth materials to break down,  into potentially transportable sediments by the action of water, wind and ice.
  • Wichita Mountains - a mountain range in southwest Oklahoma


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