Watersheds and Drainage Basins
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Questions and Answers

What is the average salinity of ocean water?

  • 35 ppt (correct)
  • 45 ppt
  • 25 ppt
  • 55 ppt
  • Which ocean is home to the Marianas Trench, the Great Barrier Reef, and the Great Pacific Garbage Patch?

  • Pacific Ocean (correct)
  • Arctic Ocean
  • Indian Ocean
  • Atlantic Ocean
  • What primarily influences deepwater currents in oceans?

  • Tidal waves
  • Temperature changes (correct)
  • Wind
  • Salinity changes
  • Why are gyres observed to rotate clockwise in the northern hemisphere?

    <p>Coriolis effect (C)</p> Signup and view all the answers

    In which layer of the atmosphere do radio communications take place?

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

    Which ocean is the newest and sits between Africa and Australia?

    <p>Indian Ocean (B)</p> Signup and view all the answers

    Where is the International Space Station located in the Earth's atmosphere?

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

    What causes thermohaline circulation, also known as the Global Conveyor Belt?

    <p>Differences in density (C)</p> Signup and view all the answers

    What defines the boundaries of a watershed?

    <p>Drainage divides (C)</p> Signup and view all the answers

    Why are watersheds important?

    <p>They can affect downstream water quality and streamflow (B)</p> Signup and view all the answers

    What can happen to diffuse contaminants in a watershed?

    <p>They become concentrated as water is funneled to the same place (C)</p> Signup and view all the answers

    What is the largest zone in the ocean?

    <p>Aphotic zone (C)</p> Signup and view all the answers

    In which ocean zone do plants and algae primarily grow?

    <p>Photic zone (C)</p> Signup and view all the answers

    What is the primary factor that divides the ocean into major zones?

    <p>Sunlight availability (B)</p> Signup and view all the answers

    What can be found around hydrothermal vents in the ocean?

    <p>Ecosystems collecting (C)</p> Signup and view all the answers

    'Diffuse contaminants over a wide area can become concentrated as water in the basin is funneled to the same place.' This statement highlights the concept of:

    <p><strong>Non-point source pollution</strong> (B)</p> Signup and view all the answers

    What are the two most abundant gases in Earth's atmosphere?

    <p>Nitrogen gas and oxygen gas (B)</p> Signup and view all the answers

    Which gas acts as Earth's sunscreen by blocking harmful ultraviolet light?

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

    What do greenhouse gases like methane and carbon dioxide do in Earth's atmosphere?

    <p>Help keep Earth warm enough for life to thrive (D)</p> Signup and view all the answers

    What is the process called where warmer, less dense material rises and colder, denser material sinks in a fluid?

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

    What are the three global-level convection cells named near the equator, mid-latitudes, and poles?

    <p>Hadley Cells, Ferrel Cells, Polar Cells (D)</p> Signup and view all the answers

    How does air pressure affect temperature?

    <p>Lower air pressure leads to higher temperature (B)</p> Signup and view all the answers

    What happens to air as it rises up the windward side of a mountain?

    <p>It expands and cools down (C)</p> Signup and view all the answers

    What is responsible for the formation of clouds when warm, moist air rises?

    <p>Warm, moist air rising (D)</p> Signup and view all the answers

    Why does air naturally move from high-pressure to low-pressure systems?

    <p>Due to the differences in temperature within air masses (C)</p> Signup and view all the answers

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