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Kuroshio Current - Quiz
Contributed by: Mistry
  • 1. What happens to the bottom water velocity as it travels from 3500 m to 400–700 m near the Kenting Plateau?
A) It decelerates
B) It becomes turbulent
C) It accelerates
D) It remains constant
  • 2. What is the approximate size of the Kuroshio Knoll?
A) 4 km x 8 km
B) 1 km x 3 km
C) 3 km x 7 km
D) 2 km x 5 km
  • 3. Where are fine sand particles transported by the Kuroshio Current often found?
A) Inside the Kuroshio Knoll
B) In a dune field
C) On the abyssal plain
D) Near the mouth of the Yangtze
  • 4. What happens to sediment grain size deeper down the edge of the Kenting Plateau?
A) The grains become smaller
B) The grains dissolve completely
C) The grain size remains uniform
D) The grains become larger
  • 5. Which river's sediment is transported by the Kuroshio Current?
A) Mississippi River
B) Nile River
C) Yangtze River
D) Amazon River
  • 6. Where is the Yangtze River sediment primarily deposited?
A) Deep sea basin
B) South China Sea floor
C) East China Sea inner shelf
D) Kenting Plateau
  • 7. Which minerals are specifically noted as being contained in Taiwanese sediment?
A) Illite and chlorite
B) Feldspar and mica
C) Kaolinite and titanium
D) Smectite and quartz
  • 8. What is the primary mineral component found in Luzon sediment?
A) Kaolinite
B) Smectite
C) Illite
D) Chlorite
  • 9. Pearl River sediments contain high levels of which specific elements or compounds?
A) Quartz and magnesium
B) Kaolinite and titanium
C) Illite and chlorite
D) Smectite and iron
  • 10. What limits the movement of Luzon sediment in a northwestward direction?
A) Low water temperature
B) High salinity levels
C) It is unable to travel northwestward
D) Strong northern winds
  • 11. What depth is the Kuroshio Knoll below the surface level?
A) 400–700 m
B) 60–70 m
C) 3500 m
D) 1000–1200 m
  • 12. What dynamic forces are responsible for the sediment transport of the Yangtze River?
A) Tidal forces and gravity
B) Only the Kuroshio Current
C) Kuroshio Current, China Coastal Current, and Taiwan Warm Current
D) The Pearl River flow and Kuroshio Current
  • 13. How is the Kenting Plateau's elevation maintained?
A) It is uplifted and balanced with erosion
B) It is built up purely by sediment deposition
C) It is only shaped by erosion
D) It is sinking into the mantle
  • 14. Where is Pearl River sediment trapped?
A) On the Luzon coastline
B) In the East China Sea inner shelf
C) On the Kenting Plateau
D) Above the abyssal basin between Hainan Island and the Pearl River mouth
  • 15. The Kuroshio Current is a western boundary current in which ocean?
A) South Atlantic Ocean
B) Indian Ocean
C) Arctic Ocean
D) North Pacific Ocean
  • 16. Who is credited with discovering the Kuroshio Current in 1565?
A) Bernhardus Varenius
B) Andrés de Urdaneta
C) James Cook
D) King Philip II
  • 17. What is the approximate annual average sea-surface temperature of the Kuroshio?
A) 10 °C
B) 15 °C
C) 30 °C
D) 24 °C
  • 18. Approximately how wide is the Kuroshio Current?
A) 100 kilometres
B) 50 kilometres
C) 25 kilometres
D) 500 kilometres
  • 19. What is the Kuroshio Current's analogue in the Atlantic Ocean?
A) Canary Current
B) Brazil Current
C) Labrador Current
D) Gulf Stream
  • 20. What is the unit used to measure the transport of the Kuroshio Current?
A) Knots
B) Celsius
C) Kilometers per hour
D) Sv (Sverdrups)
  • 21. Where does the Kuroshio Current reach a transport of 65 Sv?
A) Southeast of Japan
B) The Sea of Japan
C) East of Taiwan
D) The Yonaguni Depression
  • 22. What is the deep break in the Ryukyu island chain through which the Kuroshio enters the East China Sea?
A) Bōsō Peninsula
B) Mindanao Trench
C) Tokara Strait
D) Yonaguni Depression
  • 23. How many typhoons does the Western North Pacific Ocean experience on average annually?
A) 5
B) 50
C) 10
D) 25
  • 24. What is the general reputation of warm-core rings regarding productivity?
A) They have more productivity than shelf waters
B) They are highly productive year-round
C) They are biological deserts
D) They are not known for high productivity
  • 25. What mechanism supports biological productivity in warm-core rings as they move north?
A) Solar heating
B) Atmospheric pressure
C) Convective mixing
D) Tidal currents
  • 26. What is defined as a deep mixed layer with discrete boundaries and uniform temperature?
A) Nutricline
B) Thermostad
C) Shelf water
D) Cold jet
  • 27. Where were dense populations of phytoplankton discovered within a ring?
A) At the sea floor
B) At the surface
C) In the shelf water
D) At the nutricline
  • 28. What provided evidence of biological life within the warm-core ring during acoustic studies?
A) Satellite temperature mapping
B) Intense sound scattering
C) Visible light emissions
D) Water salinity measurements
  • 29. Which event occurred in 2003 involving typhoons in the North Western Pacific?
A) Two algal bloom events
B) A massive cooling of the Kuroshio Current
C) The complete destruction of the coral reefs
D) A permanent change in ocean salinity
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