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