quiz

Ocean Currents

1. What unit is used to measure the speed of ocean currents?

  • A) Miles per hour
  • B) Yards per second
  • C) Knots
  • D) Kilometers per hour
C) Knots Explanation

2. Which celestial body has a greater influence on tidal currents?

  • A) The Sun
  • B) Mars
  • C) The Moon
  • D) Venus
C) The Moon Explanation

3. What are gyres in the context of ocean currents?

  • A) Large circular currents formed by accumulations of water
  • B) Fast-moving currents near the surface
  • C) Deep-water currents that move along the ocean basins
  • D) Currents influenced by monsoonal winds
A) Large circular currents formed by accumulations of water Explanation

4. Which of the following is an example of a Western Boundary Current?

  • A) North Equatorial Current
  • B) Labrador Current
  • C) East Australian Current
  • D) Gulf Stream
D) Gulf Stream Explanation

5. What is a whirlpool?

  • A) A type of marine mammal found in deep ocean trenches
  • B) A rotating current formed when a river meets the sea
  • C) A vortex with a downdraft caused by ocean tides
  • D) A powerful wave produced by a fast-flowing river
B) A rotating current formed when a river meets the sea Explanation

6. Which cold ocean current flows south along Canada’s east coast?

  • A) Gulf Stream
  • B) Labrador Current
  • C) North Equatorial Current
  • D) Kuroshio Current
B) Labrador Current Explanation

7. What is a rip current?

  • A) A strong Wind blowing parallel to the shoreline
  • B) A localized current flowing away from the shoreline toward the ocean
  • C) A breaking wave that forms near low spots in sandbars
  • D) A narrow strip of land connecting an island to the mainland
B) A localized current flowing away from the shoreline toward the ocean Explanation

8. Where is the location of the highest tides in the world?

  • A) Gulf of Mexico
  • B) Mediterranean Sea
  • C) Bay of Fundy
  • D) Great Barrier Reef
C) Bay of Fundy Explanation

9. Which hemisphere experiences clockwise spiral gyres?

  • A) Northern Hemisphere
  • B) Southern Hemisphere
  • C) Both Hemispheres
  • D) Neither Hemisphere
A) Northern Hemisphere Explanation

10. What process drives deep-ocean currents based on differences in temperature and salinity?

  • A) Thermohaline circulation
  • B) Wind-driven circulation
  • C) Tidal circulation
  • D) Coriolis circulation
A) Thermohaline circulation Explanation

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