A2 Geology water supply a quiz on some of the things you need to know for A2 geology environmental geology exam 2.0 / 5 based on 1 rating ? GeologyA2/A-levelAll boards Created by: JessicaCreated on: 13-05-12 11:07 porosity is... the amount of pore space in a rock or sediment 1 of 6 permeablilty is.... the ability of a rock to transmit flui such as water and can be expressed as a rate of flow 2 of 6 four factors affecting porosity: degree of sorting, the amount of diagenesis, grain shape, packing of grains 3 of 6 hydrostatic pressure is the pressure at a point in a body of water due to the weight of the overlying column of water 4 of 6 hydraulic gradient is the difference in hydrostatic pressure between two points divided by the distance between them 5 of 6 a perched aquifer is above the regional water table and is underlain by a lens of impermeable rock which prevents the water from percolating further dowanwards 6 of 6
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