In what spaces or Voidz does most groundwater reside?
Groundwater resides in the void spaces of rock, sediment, or soil, completely filling the voids. The total volume of open space in which the groundwater can reside is porosity.
In what spaces or voids does most groundwater reside quizlet?
The majority of groundwater occurs as underground rivers.
How does most groundwater move in the subsurface?
Water moves underground downward and sideways, in great quantities, due to gravity and pressure. Eventually it emerges back to the land surface, into rivers, and into the oceans to keep the water cycle going.
How does most groundwater move in the subsurface quizlet?
Pulled by gravity, groundwater seeps from the surface slowly downward through aquifers in the earth's subsurface and eventually discharges into lakes, rivers, and the coastal ocean.
What rock properties are most important for groundwater?
The rate of groundwater flow is controlled by two properties of the rock: porosity and permeability. Porosity is the percentage of the volume of the rock that is open space (pore space). This determines the amount of water that a rock can contain.
Which of the following is associated with areas of karst topography?
quiz 11 geol
| Question | Answer |
|---|---|
| Which of the following is associated with areas of karst topography? sinkholes – soluble rock – caverns | all of these |
| A ________ is the icicle-like speleothem that grows down from the roof of a cavern | stalactite |
What is groundwater and where does it reside on the Earth quizlet?
Water that soaks into soil and rock at the surface, moves through fractures and pores to some depth below the surface, and resides there for periods of up to thousands of years. Ground water may reside in alluvium (loose sediment) or rocks which have porosity (e.g., clastic sedimentary rocks).
What is the source of the majority of water in geothermal features?
The majority of groundwater occurs as underground rivers. Groundwater is important as an erosional agent. When precipitation occurs over a forest, only 25% of the water will make it through the canopy to the forest floor, where other factors may affect how much of that will infiltrate.
What is the main source of groundwater?
Most groundwater originates as meteoric water from precipitation in the form of rain or snow. If it is not lost by evaporation, transpiration or to stream runoff, water from these sources may infiltrate into the ground.
Which of the following are common sources of groundwater contamination?
Industrial discharges, urban activities, agriculture, groundwater pumpage, and disposal of waste all can affect groundwater quality. Contaminants can be human-induced, as from leaking fuel tanks or toxic chemical spills.
What is the majority of groundwater used for in the United States quizlet?
Most groundwater withdrawn in the United States is used for: irrigation.
Which is the primary factor that causes groundwater to flow more slowly than surface water?
Groundwater moves much more slowly than surface water, for two reasons. First, groundwater moves by percolating through a complex, crooked network of tiny conduits, so it must travel a much greater distance than it would if it could follow a straight path.
What minerals are in groundwater?
Ground water may contain dissolved minerals and gases that give it the tangy taste enjoyed by many people. Without these minerals and gases, the water would taste flat. The most common dissolved mineral substances are sodium, calcium, magnesium, potassium, chloride, bicarbonate, and sulfate.
What makes the best groundwater reservoir?
Solution : The best groundwater reservoirs have high permeability and high porosity.
How does groundwater cause karst topography?
In general, a typical karst landscape forms when much of the water falling on the surface interacts with and enters the subsurface through cracks, fractures, and holes that have been dissolved into the bedrock.
What type of acid dissolves the rock in karst topography?
The carbonic acid in the moving ground water dissolves the bedrock along the surfaces of joints, fractures and bedding planes, eventually forming cave passages and caverns.
Where is groundwater found quizlet?
Where can GROUNDWATER be found? It is found underground in the pore spaces between grains in sediments and rocks or in fractures and cavities in rocks.
What is groundwater and where does it come from quizlet?
Groundwater is the water stored in the pore spaces of rocks and soils underground. It is a part of the water cycle and is naturally refilled by precipitation and runoff that infiltrate the soil. It can then be pumped to your house by a well and through pipes.
How acidic is Yellowstone hot springs?
6.7-9.5 The take-home lesson is that reaction with rocks in the subsurface exerts a powerful control on the pH of the fluids, creating the alkaline-chloride fluids we commonly encounter in Yellowstone geysers and hot springs, which have pH values generally from 6.7-9.5.
What groundwater feature forms where the water table intersects with the Earth’s surface creating a natural outflow of groundwater?
The groundwater found below the water table comes from precipitation that has seeped through surface soil. Springs are formed where the water table naturally meets the land surface, causing groundwater to flow from the surface and eventually into a stream, river, or lake.
What are three sources of groundwater?
It is found from following sources:
- (i) Meteoric Water: This is the main source of groundwater. …
- (ii) Connate Water: Water contained in pores and cavities of sedimentary rocks under seas and lakes is called connate water. …
- (iii) Magmatic Water:
Which of the following is a common source of groundwater pollution?
Sources of groundwater pollution
| Place of origin | Potential groundwater contamination source |
|---|---|
| Municipal | |
| At or near the land surface | air pollution municipal waste landspreading salt for de-icing streets streets & parking lots |
| Below the land surface | landfills leaky sewer lines |
What is the largest most common source of groundwater contamination?
Major Sources of Groundwater Contamination
- Agricultural Chemicals. Agricultural production has been scaled up in most developed nations. …
- Septic Waste. …
- Landfills. …
- Hazardous Waste Sites. …
- Storage Tanks. …
- Atmospheric Pollutants. …
- Underground Pipes. …
- Road Salts.
Aug 28, 2018
What is the greatest use of groundwater quizlet?
The greatest use of groundwater is irrigation, with about 68% of groundwater used in 2000 being for irrigation.
What is groundwater mostly used for in the United States?
Groundwater supplies drinking water for 51% of the total U.S. population and 99% of the rural population. Groundwater helps grow our food. 64% of groundwater is used for irrigation to grow crops.
What force causes groundwater flow?
Gravity Gravity generates the flow of springs, rivers, and wells. If the pores in rocks and sediments are connected, gravity allows the water to move slowly through them.
What acid is most common in groundwater?
Answer and Explanation: The most common acid in groundwater is carbonic acid H2CO3 H 2 C O 3 , as it is formed in water just by being exposed to the carbon dioxide in the…
Why is ground water acidic?
Water is removed from the ground in low-lying discharge areas, such as lakes, streams, and springs. Groundwater flows from areas with a higher water table surface to areas with a lower water table. This mixture of carbonic acid in water makes most natural surface waters slightly acidic.
Why is limestone a good aquifer?
Limestones also can have areas of huge porosity and no permeability, or good permeability and poor porosity, depending on how the rock has been fractured. Good water wells may be localized only in certain areas of limestone formations. Sandstones generally have good porosity and permeability, making a good well.
What does carbonic acid do to karst?
Karst forms when natural water, in combination with carbon dioxide, creates carbonic acid and dissolves calcite (calcium carbonate) in limestone. Remember that CO2 in the atmosphere dissolves readily in the water droplets that form clouds from which precipitation comes in the form of rain and snow.