Discuss the different aspects of groundwater storage and movement below the surface. Include the ways in which groundwater comes to the surface on its own, or is drawn to the surface by humans, along with the consequences
What will be an ideal response?
Precipitation is the main source of groundwater, percolating downward as gravitational water from the soil moisture zone, moving through the zone of aeration and, eventually, accumulating in the zone of saturation. The upper limit of the zone of saturation is the water table.
An aquifer is a subsurface layer of permeable rock or unconsolidated materials through which groundwater can flow. There are two types, confined (bounded by impermeable layers above and below) and unconfined (bounded by permeable surface only below).
Humans extract groundwater from aquifers via wells. In unconfined aquifers, the water is not under pressure and must be pumped. In confined aquifers, the water is under pressure and may rise under its own pressure to the potentiometric surface.
Overconsumption of groundwater can lead to the lowering of the water table (drawdown) and a cone of depression. When water is used beyond the flow and recharge capacities of an aquifer, groundwater mining occurs.
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Rain with a pH of 4.6 is
A) about 10 times more basic than rain from non-polluted regions. B) typical of regions with very low pollution. C) about 10 times more acidic than rain from non-polluted regions. D) about 100 times more acidic than rain from non-polluted regions.
What is the difference between a pyroclastic flow and a pyroclastic surge (aka surges)?
What will be an ideal response?
The climatic event that began with cooling in about AD 1300 and lasted until the middle 1800s is known as the ____________________
Fill in the blank(s) with correct word
Which of the following amino acids functions as a hormone?
A) leucine B) lysine C) thyroxine D) tyrosine