Ocean Currents and Their Characteristics
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Questions and Answers

What is a characteristic depth of a western boundary current?

  • Up to 2 kilometres (correct)
  • Less than 0.5 kilometre
  • Between 0.5 and 1 kilometre
  • More than 2.5 kilometres
  • Which of the following currents is classified as an eastern boundary current?

  • Brazil Current
  • California Current (correct)
  • Kuroshio Current
  • Gulf Stream
  • How does the speed of eastern boundary currents generally compare to western boundary currents?

  • Eastern boundary currents are typically faster.
  • Eastern boundary currents vary widely in speed.
  • They have the same speed.
  • Eastern boundary currents are generally slower. (correct)
  • What is the approximate transport volume range for eastern boundary currents?

    <p>10 to 15 Sva</p> Signup and view all the answers

    Which of the following best describes the waters associated with western boundary currents?

    <p>Warm and derived from low latitudes</p> Signup and view all the answers

    What natural phenomenon describes the movement of cool, nutrient-rich water rising to replace displaced surface water in the California Current region?

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

    Which factor primarily drives the southward flow of cool water in the California Current?

    <p>Coriolis effect and onshore breezes</p> Signup and view all the answers

    Which region does the California Current flow along?

    <p>The west coast of North America</p> Signup and view all the answers

    What is the main consequence of the California Current's water dynamics for marine life?

    <p>Higher biological productivity due to nutrient-rich water</p> Signup and view all the answers

    From which geographic area does the California Current originate its cool water?

    <p>High latitudes near British Columbia</p> Signup and view all the answers

    What is the primary direction of movement for the Gulf Stream?

    <p>Northward along U.S. East Coast</p> Signup and view all the answers

    Which geographic feature does the Gulf Stream eventually merge with?

    <p>Sargasso Sea</p> Signup and view all the answers

    What unique biological feature is associated with the Sargasso Sea?

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

    What characteristic behavior is noted in the movement of the Gulf Stream?

    <p>It meanders and forms loops.</p> Signup and view all the answers

    Which of the following statements is true about the Gulf Stream?

    <p>It circulates around the center of the North Atlantic Gyre.</p> Signup and view all the answers

    What type of current is the Gulf Stream classified as?

    <p>A western boundary current</p> Signup and view all the answers

    What is the primary function of the Gulf Stream in relation to water temperature?

    <p>It transports warm, tropical water northward.</p> Signup and view all the answers

    How does the Gulf Stream affect the climate of Ireland and the west coast of Great Britain?

    <p>It keeps these areas warm throughout the year.</p> Signup and view all the answers

    Which current works in conjunction with the Gulf Stream to influence the climate of Norway?

    <p>The North Atlantic Drift</p> Signup and view all the answers

    What effect does the Gulf Stream have on parts of Norway?

    <p>Makes them ice- and snow-free year round.</p> Signup and view all the answers

    What effect do warm ocean currents have on the air at the coast?

    <p>They create warm, humid air.</p> Signup and view all the answers

    What type of climate is typically found on land adjacent to warm ocean currents?

    <p>Humid climate</p> Signup and view all the answers

    What is the primary effect of Earth's rotation on water in the context of western intensification?

    <p>Water is displaced toward the west.</p> Signup and view all the answers

    How do cool ocean currents influence the climate of nearby land?

    <p>They bring cool, dry air.</p> Signup and view all the answers

    In which way does western boundary current flow differ from eastern boundary currents?

    <p>They are faster, narrower, and deeper.</p> Signup and view all the answers

    Which of the following statements accurately describes the air condition near cool ocean currents?

    <p>The air is cool and dry.</p> Signup and view all the answers

    What is the primary air condition effect of warm ocean currents on coastal regions?

    <p>Warm, humid air.</p> Signup and view all the answers

    What is the role of the Coriolis effect in western intensification?

    <p>It contributes to the speeding up and deepening of western boundary currents.</p> Signup and view all the answers

    Which of the following statements accurately describes the characteristics of western boundary currents?

    <p>They are characterized as warmer and deeper.</p> Signup and view all the answers

    What happens to the intensity of western boundary currents in both hemispheres due to western intensification?

    <p>They become faster, narrower, and deeper.</p> Signup and view all the answers

    What is the primary feature of the Sargasso Sea?

    <p>It is a vast patch named after a free-floating seaweed.</p> Signup and view all the answers

    What is a common temperature characteristic of eastern boundary currents?

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

    Which of the following species are known to inhabit the Sargasso Sea?

    <p>Turtles and various fish species</p> Signup and view all the answers

    What is the typical speed of eastern boundary currents compared to other ocean currents?

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

    In which oceanic region is the Sargasso Sea located?

    <p>Northern Atlantic Subtropical Gyre</p> Signup and view all the answers

    How do the properties of eastern boundary currents differ in terms of water depth?

    <p>They are shallow</p> Signup and view all the answers

    What ecological role does Sargassum play in the Sargasso Sea?

    <p>It serves as a habitat for various marine species.</p> Signup and view all the answers

    Which of the following best describes the width of eastern boundary currents?

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

    Which of the following statements is true about the Sargasso Sea?

    <p>It is characterized by floating islands of seaweed.</p> Signup and view all the answers

    In terms of ocean basin location, where are eastern boundary currents located?

    <p>Eastern side of ocean basins</p> Signup and view all the answers

    What phenomenon occurs when the Gulf Stream creates warm-core rings?

    <p>Warm Sargasso Sea water gets trapped in a loop.</p> Signup and view all the answers

    What type of ring is formed when cold water is surrounded by warmer water in the Gulf Stream?

    <p>Cold-core ring</p> Signup and view all the answers

    What is a significant outcome of the meandering patterns in the Gulf Stream?

    <p>Creation of distinct ocean zones with varying temperatures.</p> Signup and view all the answers

    How do warm-core and cold-core rings primarily differ?

    <p>The surrounding water temperature.</p> Signup and view all the answers

    What unique aspect is associated with the biological populations in the Gulf Stream?

    <p>They can vary based on localized water temperature differences.</p> Signup and view all the answers

    What is the primary feature of the Loop Current in the Gulf of Mexico?

    <p>It generates warm loop current eddies.</p> Signup and view all the answers

    How do hurricanes interact with the Loop Current?

    <p>Hurricanes intensify when passing over warm cores.</p> Signup and view all the answers

    Which statement best captures a consequence of the Loop Current's characteristics?

    <p>It can enhance hurricane strength as they travel over it.</p> Signup and view all the answers

    What type of ocean current is the Loop Current classified as?

    <p>Warm surface current</p> Signup and view all the answers

    Which statement is inaccurate regarding the Loop Current?

    <p>It primarily influences local oceanic biodiversity.</p> Signup and view all the answers

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