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The Science Behind the Color of the Ocean
Contributed by: Flynn
  • 1. What causes the ocean to appear blue?
A) Scattering of sunlight
B) Sediment concentration
C) Algae bloom
D) Plastic pollution
  • 2. What phenomenon can cause coastal waters to appear brown?
A) Ocean currents
B) Solar radiation
C) Deep-sea fish
D) Sediment runoff
  • 3. Which color is often associated with very clear ocean waters?
A) Purple
B) Brown
C) Gray
D) Turquoise
  • 4. What does the term 'oceanic photic zone' refer to?
A) The deepest part of the ocean.
B) The upper layer of ocean where sunlight penetrates.
C) An area free of pollutants.
D) A zone with no organisms.
  • 5. What human activity can change ocean color?
A) Sailing.
B) Fishing.
C) Swimming.
D) Pollution and runoff.
  • 6. What type of water can appear green due to high nutrient levels?
A) Eutrophic water
B) Saline water
C) Brackish water
D) Oligotrophic water
  • 7. What happens to light as it penetrates deeper into the ocean?
A) It gets absorbed and scattered.
B) It reflects back immediately.
C) It stays the same.
D) It becomes more intense.
  • 8. Which ocean color is associated with high levels of dissolved organic matter?
A) Clear blue
B) Golden
C) Deep blue
D) Brown
  • 9. What is the primary reason for the green color in many coastal areas?
A) Phytoplankton presence
B) Higher salinity
C) Mineral deposits
D) Temperature changes
  • 10. In which ocean regions are blues and greens most prevalent?
A) Desert coastlines
B) Volcanic islands
C) Polar regions
D) Tropical and subtropical regions
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