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Aquatic Ecosystems Test

Quiz by Sean Daly

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49 questions
Show answers
  • Q1
    What percentage of Earth's surface is covered by water?
    90%
    100%
    98%
    75%
    30s
  • Q2
    Which of the following is NOT a type of aquatic ecosystem based on salinity?
    Freshwater
    Desert
    Saltwater
    Brackish
    30s
  • Q3
    What is the primary salt found in ocean water?
    Potassium chloride
    Sodium chloride
    Calcium carbonate
    Magnesium sulfate
    30s
  • Q4
    How does evaporation affect the salinity of ocean water?
    Makes it fresh water
    Increases salinity
    Has no effect
    Decreases salinity
    30s
  • Q5
    Which ocean zone is known for having the highest productivity?
    Aphotic zone
    Neritic zone
    Benthic zone
    Open ocean
    30s
  • Q6
    What is the photic zone?
    The area where light can penetrate
    The area with the lowest temperature
    The deepest part of the ocean
    The area with the highest salinity
    30s
  • Q7
    What is a seamount?
    A volcanic mountain under the ocean
    A flat area of the ocean floor
    A type of coral reef
    A deep ocean trench
    30s
  • Q8
    Which feature of the ocean floor is known for being the deepest?
    Trench
    Mid-ocean ridge
    Continental shelf
    Seamount
    30s
  • Q9
    What is the purpose of wetlands?
    All of the above
    To filter pollutants
    To recharge aquifers
    To provide habitats
    30s
  • Q10
    What is a watershed?
    A type of wetland
    A type of estuary
    The area of land drained by a river
    A part of the ocean
    30s
  • Q11
    Which of the following is a characteristic of estuaries?
    They are only found in tropical regions
    They are always freshwater
    They are brackish ecosystems
    They have no plant life
    30s
  • Q12
    What happens to temperature as you move deeper into the ocean?
    It decreases
    It stays the same
    It fluctuates
    It increases
    30s
  • Q13
    Which freshwater ecosystem is characterized by being flooded with water at least part of the year?
    Ponds
    Wetlands
    Rivers
    Lakes
    30s
  • Q14
    What is the main difference between ponds and lakes?
    Ponds are smaller
    Lakes are smaller
    Ponds are larger
    Lakes have more fish
    30s
  • Q15
    What is the term for the point where a tributary meets the main river?
    Mouth
    Meander
    Source
    Confluence
    30s

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