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Hydrology
| Term | Definition |
|---|---|
| Evaporation | liquid that occurs from the surface of a liquid into a gaseous state |
| Transpiration | process where plants absorb water through the roots and then give off water vapor through pores in their leaves. |
| Condesation | change of water from its gaseous form (water vapor) into liquid water. |
| Precipitaion | rain, snow, sleet, or hail that falls to the ground. |
| Run Off | Surface runoff is water, from rain, snowmelt, or other sources, that flows over the land surface |
| Groundwater | water held underground in the soil or in pores and crevices in rock. |
| Water Vapor | gaseous phase of water |
| Permeable | allowing water to pass through it. |
| Impermeable | not allowing fluid to pass through |
| Pores | gaps, cracks, and the interfaces of infrastructure and soils |
| Aquifer | underground layer of water-bearing permeable rock |
| Water Table | the level below which the ground is saturated with water |
| Spring | When the water table meets the Earth's surface, water flows out and forms a spring. |
| Saturated Zone | the level beneath the Earth's surface below which all pore spaces are filled with water, and above which the pore spaces are filled with air |
| Artesian Well | a well that doesn't require a pump to bring water to the surface |
| Watershed | an area or ridge of land that separates waters flowing to different rivers, basins, or seas. |
| Drought | longed period of abnormally low rainfall; a shortage of water |
| Water Conservation | encompasses the policies, strategies and activities made to manage fresh water as a sustainable resource |
| Salinity | saltiness or dissolved salt content of a body of water |
| Sodium Chloride | a colorless crystalline compound occurring naturally in seawater and halite; common salt. |
| Oxygen+Carbon Dioxide | The two gases found in the ocean. More Carbon Dioxide in the ocean than oxygen. |
| Currents(density) | currents that flow along the bottom of oceans or lakes |
| Surface Currents | ocean surface is moved primarily by winds that blow in certain patterns |
| Deep Ocean Currents | Thermohaline circulation, also known as the ocean's conveyor belt, refers to the deep ocean density-driven ocean basin currents |
| Coriolis Effects | apparent deflection of moving objects when the motion is described relative to a rotating reference frame |
| Tides and Tidal Bugle | Tides are the alternate rising and falling of the sea. Tidal Bulge is when surface ocean water created by the gravitational effects of the Moon and Sun and circling the globe on opposite sides to create the daily periods of high and low tides. |
| *High Tide and Low Tide | The lowest tides reached under normal meteorological conditions (the spring tides) take place when the Moon and Sun are directly aligned with respect to Earth. The state of the tide when at its highest level. |
| Spring Tide and Neap Tide | Neap tide are gravitational forces of the Moon and the Sun are perpendicular to one another (with respect to the Earth). Spring Tide is a rare, unusually high tide. |
| Upwelling | oceanographic phenomenon that involves wind-driven motion of dense, cooler, and usually nutrient-rich water towards the ocean surface, replacing the warmer, surface water. |
| Undertow | another term for rip current, used in the incorrect belief that rip currents drag swimmers below the surface. |
| Plankton, Nekton, Benthos | organisms that spend most of their time in the water column and can swim freely and faster than currents |
| Crest | the top of something (mountains) |
| Trough | a long, wide, and deep depression in the ocean floor having gently sloping sides, wider and shallower than a trench. |
| Wavelength | the distance between successive crests of a wave |
| Wave Height | a surface wave is the difference between the elevations of a crest and a neighbouring trough |
| Wave Frequency | number of crests of a wave that move past a given point in a given unit of time |
| Continental Self | A gently sloping shallow area that extends outward from the edge of the continent. Located between the shoreline and the continental slope. |
| Continental Slope | A STEEP slope. This marks the true end of the continent. This is where the rock of the continent and the rock of the ocean begins. |
| Abyssal Plain | A large, flat, nearly level area of the deep ocean-basin. This area is covered with a thick layer of mud and the remains of tiny marine organisms. |
| Seamount | Underwater mountains that do not come above the oceans' surface. Is currently, or was once a volcano. |
| Volcanic Island | Seamounts that come above the ocean surface |
| Trench | Deepest areas of the ocean. Most pressure and the coldest. The creatures that live here are very strange. |
| Mid-Ocean Ridge | Continuous range of mountains along the ocean floor. |