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Porosity is a measurement of the ratio of pore space to solids in a given volume of material.
The pore spaces form in soils and rocks due to the gaps between the individual clasts or grains that aggregate to form them. Compaction and consolidation (where the soil or rock is compressed) can force the grains closer together and so reduce the size of the pore spaces and so decrease the porosity.
Below the phreatic surface or water table, these pore spaces are normally filled with water (there are exceptions however for simplicities sake it is a reasonable assumption). The larger the porosity of a rock or soil, the more space per unit volume there is to store groundwater. Also the larger the interconnections between the pore spaces and the greater the number of interconnections, the more permeable the material will be to the movement of groundwater.
Porosity is a dimensionless quantity which is calculated by dividing the volume of void space by the total volume of the material in question. There are a number of methods of determining the value of the porosity of a material and for more information please see the related link.
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How quickly would groundwater flow through rock with porosity and high permeability?
75
Which factor is most important in determining how much groundwater can be stored in underground rock?
Porosity - how much open space between grains.
How sorting affects porosity?
more sphericity,more porosity good sorting ,more uniform size and more will be the porosity porosity doesnot depend on size of grain
What is the relationship between porosity bulk density and particle density?
If you were to graph particle size and porosity, it would be a constant slope (horizontal line).Porosity is not affected by particle size.
What does high porosity and low permeability mean?
Porosity refers to the amount of empty space that is between particles of material. When something has a low porosity, it does not have much of this space between its particles.
How quickly would groundwater flow through rock with porosity and high permeability?
75
Which factor is most important in determining how much groundwater can be stored in underground rock?
Porosity - how much open space between grains.
Which would be easier to clean up a stream pollution or a groundwater pollution and Why?
It is always easier to cleanup something if you can get to it. * Streams (and their beds) can be worked on pretty easily. * Groundwater is pretty mysterious: flows are difficult to observe, drawdown to collect pollution depends on porosity, you don't know when the job is done
What is low porosity and high porosity?
big particles=low porosity small particles=high porosity
Is a glass an example of porosity?
yes.... it is an answer for porosity....
What does porosity mean in welding?
Porosity is the formation of bubbles in the weld.
How do you calculate porosity of clay bricks?
how do we calculate porosity of ceramic?
How does sorting of rock particles affect porosity of rocks?
poorly sorted = low porosity well sorted = high porosity
How does the permeability of soil and rocks affect the flow of groundwater?
Permeability is when water can pass through different types of soil and rocks. Therefore the permeability affects the soil and rocks because if the soil or rock is PERMEABLE then the groundwater can easily flow through it :)
How does porosity and permeability interact?
The porosity directly correlates with the permeability because the permeability requires a certain level of porosity for a certain measure of it.
Clay and solid rock are in porosity?
clay and solid rock has porosity
How does the hair's porosity affect haircolor?
What is porosity ? And how can it affect hair color
