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APSC 151 Week 4 Earth Resources | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions $13.48   Add to cart
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APSC 151 Week 4 Earth Resources | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions
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APSC 151 Week 4 Earth Resources | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions

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  • August 4, 2024
  • 14
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • apsc 151 week 4 earth resources questions answ

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APSC 151 Week 4 Earth Resources | Questions & Answers (100 %Score) Latest Updated
2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions

surface water - 0.3% of fresh water

- Surface water is found in runoff, lakes, ponds, swamps, streams and rivers



glacial water - 76% of fresh water

- Not renewable

- Melting into oceans (lost)

- Original source of most current surface water resources on earth



groundwater - 24% of fresh water

- Groundwater is water found in the pores of soil and sediment, plus narrow fractures in bedrock

- Largest reservoir of fresh water that is readily available to humans



water table - The upper level of the saturated zone of groundwater

- where groundwater is at zero pressure



zone of aeration - Above the water table

- Water cannot be pumped by wells



zone of saturation (phreatic zone) - zone where all open spaces in sediment and rock are completely
filled with water

- Water within this zone is called "groundwater"



porosity of ground - Determines storage capacity for water

- primary porosity: in sand and rocks

- secondary porosity: in fractures and caverns

, aquitard - An impermeable layer that hinders or prevents water movement (such as clay or unjointed
rock)



aquifer - permeable rock strata or sediment that transmits groundwater freely (such as sand and
gravels)



exposed soil or sediment - At depth the pore space between grains would be filled with water

- A well in this rock has a screen to allow water to flow from the soil to the well

- The water table is the height of water in the well after reaching a static level (no flow)



exposed fractured rock - At depth these joints would be filled with water

A well in this rock intersects and drains the fractures

There is no underground "pool"



Porosity - - Percentage of total volume of rock or sediment that consists of pore spaces

- how much groundwater can be stored



Permeability - The ability of a material to transmit a fluid

*Sand*: porous and permeable

*Granite*: non-porous and impermeable

*Clay*: porous and impermeable



perched water table - May form where a local aquitard is present within an aquifer

- E.g. a lens of shale within a sandstone



springs - Occur where the water table intersects Earth's surface

- Natural outflow of groundwater

Perched water table

- Can be caused where an aquitard creates a localized zone of saturation

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