EARTH SCIENCE
GROUNDWATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Types of minerals that make up the rock
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total amount of space between mineral grains
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number of connected pore spaces and their sizes
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position of the rock with respect to the water table
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Detailed explanation-1: -Porosity is defined as the ratio of the volume of pores to the volume of bulk rock and is usually expressed as a percentage.
Detailed explanation-2: -Permeability describes how easily water can flow through the rock or unconsolidated sediment and how easy it will be to extract the water for our purposes.
Detailed explanation-3: -The porosity of a rock varies because of the size of the grains in the rock and the shape of the grains. Another factor that affects the porosity of a rock is whether or not there is any material in the rock (or cement) to fill in the gaps between pore spaces and hold the grains together.
Detailed explanation-4: -Permeability is a measure of the interconnectedness of pores. The connection between pore spaces allows groundwater to flow through the sediment or rock. The combination of water storage (porosity) and flow (permeability) makes a good aquifer-a rock unit or sediment that contains usable groundwater.