ESC3019 Hydrosphere and Lithosphere Lecture 10: Groundwater
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Questions and Answers

What percentage of the hydrosphere does groundwater represent?

  • 0.6% (correct)
  • 1.5%
  • 3.4%
  • 2.8%

How is groundwater resupplied?

  • By slow infiltration of precipitation (recharge) (correct)
  • By condensation of water vapor
  • By surface runoff
  • By rapid infiltration of precipitation

What is the main method of accessing groundwater?

  • Pumping water from rivers
  • Desalination plants
  • Extracting from underground aquifers (correct)
  • Using rainwater harvesting systems

What determines the magnitude of porosity in groundwater?

<p>Particle size and arrangement (D)</p> Signup and view all the answers

What is groundwater?

<p>Water that fills pores in sediments and sedimentary rocks as well as fractures in other rock types (A)</p> Signup and view all the answers

What is the primary method of recharging groundwater?

<p>Infiltration of precipitation (D)</p> Signup and view all the answers

What percentage of the hydrosphere does groundwater represent?

<p>0.6% (B)</p> Signup and view all the answers

What is an aquifer?

<p>An underground layer of water-bearing rock (D)</p> Signup and view all the answers

What causes groundwater to move?

<p>Gravitational forces (A)</p> Signup and view all the answers

What is salt-water intrusion related to in the context of groundwater?

<p>Infiltration of sea water through rocks into freshwater aquifers (C)</p> Signup and view all the answers

What is the primary method of accessing groundwater?

<p>Drilling wells (A)</p> Signup and view all the answers

What is the primary cause of movement for groundwater?

<p>Gravity (D)</p> Signup and view all the answers

In the context of groundwater, what does porosity refer to?

<p>The size of water-bearing openings in the ground (D)</p> Signup and view all the answers

What is the primary method of recharging groundwater?

<p>Infiltration of precipitation (D)</p> Signup and view all the answers

What percentage of the hydrosphere does groundwater represent?

<p>0.6% (B)</p> Signup and view all the answers

What is salt-water intrusion related to in the context of groundwater?

<p>Over-pumping of groundwater causing saltwater to intrude into aquifers (C)</p> Signup and view all the answers

What is the primary method of recharging groundwater?

<p>Infiltration of surface water (B)</p> Signup and view all the answers

What is an unconfined aquifer?

<p>An aquifer with a layer of impermeable rock above it (D)</p> Signup and view all the answers

What causes groundwater to move?

<p>Infiltration and percolation (B)</p> Signup and view all the answers

What is porosity in the context of groundwater?

<p>The ability of the material to transmit water (C)</p> Signup and view all the answers

What percentage of the hydrosphere does groundwater represent?

<p>0.6% (C)</p> Signup and view all the answers

What is salt-water intrusion related to in the context of groundwater?

<p>The movement of saltwater into freshwater aquifers (D)</p> Signup and view all the answers

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