Aquifers(question n answers)graded A+ 2023/2024

AquifersClays are the most stable minerals on earth surface - correct answer True what are some controls on chemical weathering? - correct answer particle size, presence of plants, and rock composition Carbonates are especially susceptible to physical weathering. - correct answer False (chemical) What is an aquifer? - correct answer Highly permeable rock or regolith that is economically useful as a source of water. What is a confined aquifer? - correct answer confined between 2 impermeable layers (usually clay) water percolates to the confined aquifer under the pull of gravity and a the water flows to great depths, hydrostatic pressure increases. What is potentiometric surface? - correct answer the height of surface the water in a confined aquifer could reach if allowed to flow. What is an artesian aquifer? - correct answer Water in confined aquifers has the hydrologic potential to rise to the same height as the water table in an unconfined aquifer. what is a perched aquifer? - correct answer An impermeable layer of clay sediment in the vadose zone may produce a perched water body. What is a spring? - correct answer Natural flow of water at ground surface What are springs usually caused by? - correct answer Changes in permeability; examples include lava flows, along faults, and when sediment types changes. What is a well? - correct answer A hole dug below the water table. How do you get the cone of depression? - correct answer when pupping rate exceeds natural flow rate. You have seasonal fluctuation of the water table with seasonal rains. - correct answer True Ground water is not an important source of water for human consumption - correct answer False (Major)q What is the rule of capture? - correct answer If you can get it out of the ground you can use it. Why is it safer to drink water from siliclastic aquifers than limestone aquifers? - correct answer Because siliclastic aquifers have a slower recharge so the water has 100s of era to go through filtration while limestone aquifers have a very quick recharge so the water doesn't have as much time to be filtered. What is the Ogallala Aquifer? - correct answer the largest aquifer in U.S. and its very important for agriculture; it provides about 30% of groundwater irrigation. What are the impacts of the Ogallala aquifer being at risk/ - correct answer with the water table declining, the acreage of irrigation is declining while the cost of pumping is increasing, leading to lowered productions. Water pressure in the pores of an aquifer helps support the weight of the overlying rocks or sediments - correct answer True What does compaction result in? - correct answer less pore space and it lowers reservoir capacity. Geologic safe sites ave the following characteristics: - correct answer few fractures and low permeability no present or future economic mineral in the area, local groundwater flow should be away from plant and animal life, low rainfall,