Groundwater Importance and Distribution
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Questions and Answers

What makes up most of Earth's liquid freshwater?

  • Lakes
  • Streams
  • Rivers
  • Groundwater (correct)

    • Which soil type is mentioned as being really good at soaking up water?

  • Silt
  • Clay
  • Sand (correct)
  • Rocks

    • What is the region where the soil is not saturated with water called?

  • Water table
  • Unsaturated zone (correct)
  • Soil moisture
  • Saturated zone

    • What fills the bottom of a hole when it reaches the saturated zone?

    <p>Water</p> Signup and view all the answers

    Where can you observe the boundary between the saturated and unsaturated zones?

    <p>At the water table</p> Signup and view all the answers

    What is the role of groundwater in the water cycle?

    <p>Groundwater is an important component of the water cycle</p> Signup and view all the answers

    Which zone is literally saturated with water?

    <p>Saturated zone</p> Signup and view all the answers

    How do geysers form?

    <p>When groundwater is heated by magma underground, the pressure builds up and the water escapes at the surface as steam</p> Signup and view all the answers

    How do aquifers function as underground water reservoirs?

    <p>Aquifers act like giant rock sponges, soaking up and holding water for thousands of years</p> Signup and view all the answers

    What is the primary role of groundwater in forming sedimentary rocks?

    <p>Groundwater acts as a cementing agent, gluing sediments together over millions of years</p> Signup and view all the answers

    Why are sinkholes formed when groundwater is over-pumped?

    <p>Sinkholes form because the land above sinks when groundwater is removed, creating cavities</p> Signup and view all the answers

    What role does groundwater play in natural ecosystems?

    <p>Groundwater is a source of freshwater for surface water systems like wetlands and rivers</p> Signup and view all the answers

    How are caves different from sinkholes?

    <p>Caves are typically smaller than sinkholes and have connections to other underground spaces like caverns</p> Signup and view all the answers

    What happens when the water underground is heated by magma near the surface?

    <p>The pressure builds up and sometimes results in escaping steam, forming geysers</p> Signup and view all the answers

    What is the primary function of aquifers in storing groundwater?

    <p>Aquifers function to soak up water like sponges and hold it for long periods of time</p> Signup and view all the answers

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