- Acre-Foot - unit of volume used to measure large amounts of water
- 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
- Biological Weathering - the breakdown of rocks by plants or animals
- Biotite Mica - type of aluminum silicate mineral
- 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
- 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
- Condensation - The conversion of water vapor gas to liquid water
- Copper - a soft, very conductive metal
- Coprolite - fossilized poop
- Crinoid - marine animal fossil
- Dam - a barrier that restricts the flow of water
- Desert Rose - ornate gypsum crystals
- Desmond Discord - CLASSIFIED
- Devon Energy Center - the tallest building in Oklahoma
- Erosion - the 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
- 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
- Glacier - large, slow moving accumulation of ice
- Goddard Youth Camp - an educational facility in the Arbuckle Mountains region
- Granite - a type of felsic intrusive igneous rock
- Gulf Stream - a warm and fast current of water in the ocean
- 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)
- 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
- 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.
- Little Sahara State Park - an Oklahoma state park containing many large sand dunes
- Mackerel Shark Tooth - fossilized remains of an ancient fish
- Megalodon Tooth - the scariest part of a scary prehistoric shark
- 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
- 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
- Old River Control Structure - a Louisiana facility that helps regulates flooding of the Mississippi River
- 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
- 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
- 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.
- Sediment - bits and pieces of rock produced by weathered and eroded by wind, ice and water and often deposited in another place.
- Shale - a 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
- 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
- Surface Runoff - excess water from precipitation that flows along the ground
- Swamp - a forested wetland ecosystem
- Terravator – CLASSIFIED
- Transpiration - the evaporation of water from plant leaves
- Travertine - a limestone deposited by springs
- 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
- Washita River - a river in Texas & Oklahoma that joins with the Red River
- Water - A combination of two hydrogen atoms and one oxygen
- Water Fall - 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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