Groundwater is found in two zones. The unsaturated zone, immediately below the land surface, contains water and air in the open spaces, or pores. The saturated zone, a zone in which all the pores and rock fractures are filled with water, underlies the unsaturated zone.
Q. What is the term for the ability to release fluids?
permeability. a material’s ability to release fluid.
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Q. Is the measure of a material’s ability to transmit fluids?
More specifically, porosity of a rock is a measure of its ability to hold a fluid. Mathematically, it is the open space in a rock divided by the total rock volume (solid and space). Permeability is a measure of the ease of flow of a fluid through a porous solid.
Q. What are two ways that springs can form?
A spring is formed when the water reaches the surface through a fracture or porous layer. These types of springs usually occur along faults (a fracture in the earth), or in areas of great topographic relief such as cliffs or valleys.
Q. How do porosity and permeability differ quizlet?
How do porosity and permeability differ? Porosity: the total volume of empty spaces in a material, usually a percentage. Permeability: a measure of the ease which fluids can flow through a porous material. A material whose pores are isolated from one another can have high porosity but low permeability.
Q. What does Darcy’s law tell us?
Darcy’s law says that the discharge rate q is proportional to the gradient in hydrauolic head and the hydraulic conductivity (q = Q/A = -K*dh/dl). Definitions of aquifers, aquitards, and aquicludes and how hydraulic conductivity relates to geology.
Q. What determines a rock’s permeability?
Permeability is affected by the pressure in a rock. Sandstones may vary in permeability from less than one to over 50,000 millidarcys (md). Permeabilities are more commonly in the range of tens to hundreds of millidarcies. A rock with 25% porosity and a permeability of 1 md will not yield a significant flow of water.
