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Oceans chapter 3

Quiz by Mary Ann Hopple

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19 questions
Show answers
  • Q1
    What is one way that the ocean is important?
    The ocean contains salt water.
    All of the ocean has been explored.
    The ocean provides almost all of the living space on Earth.
    The ocean has different salinities.
  • Q2
    What is salinity?
    Salinity is how much carbon dioxide is found in water.
    Salinity is how much oxygen is dissolved in water.
    Salinity is how much sugar is dissolved in water.
    Salinity is how much salt is dissolved in water.
  • Q3
    What can increase the salinity of ocean water?
    The formation of ocean ice
    River water entering the ocean
    High precipitation
    Low evaporation
  • Q4
    What can decrease the salinity of water?
    Low precipitation
    High evaporation
    High precipitation
    Formation of ocean ice
  • Q5
    What is density?
    The curving of currents
    How packed together the particles are in a substance
    The mixing of two different substances
    The steepness of the continental slope
  • Q6
    How does the salinity of ocean water affect its density?
    Lower salinity water sinks to the bottom of the ocean.
    Lower salinity water has greater density.
    Higher salinity water has a greater density.
    Salinity does NOT affect density of ocean water.
  • Q7
    What is an estuary?
    a place where animals from the deep ocean live
    a place where there is very little life
    a place where fresh water and salt water meet
    a place where the salinity is very high
  • Q8
    Why are estuaries important?
    Estuaries are places where many young marine animals live.
    Estuaries are areas all fresh water.
    Estuaries are areas with high salinity.
    Estuaries have many predators for young marine life.
  • Q9
    Currents in the ocean are masses of moving water. Why are currents important?
    Currents move in straight lines around the globe.
    Currents separate animals from their parents.
    Currents are formed by the gravitational pull of the sun and moon.
    Currents move heat and nutrients in the ocean.
  • Q10
    Many factors influence currents. Which of the following is NOT an influence on currents?
    the moon
    ocean floor topography
    Coriolis effect
    differences in density
  • Q11
    What is the Coriolis effect?
    Currents curve because Earth rotates
    Gravity causes currents to move
    Areas of high pressure have winds
    The moon affects currents
  • Q12
    Why is the Great Pacific Garbage Patch a problem?
    The plastics in the trash get smaller and hurt life in the ocean
    The trash can be recycled into new plastic items
    The trash spreads from one ocean to another
    The trash can be seen from space
  • Q13
    What is El Nino?
    El Nino is a short-term climate change centered in the Pacific Ocean
    El Nino is a change in the ocean tides
    El Nino is a climate change when the water gets colder in the Pacific Ocean
    El Nino greatly affects the climate in Europe
  • Q14
    Which of the numbered arrows is the Gulf Stream?
    Question Image
  • Q15
    What is current 4?
    Question Image
    warm water current
    Gulf Stream current
    deep warm current
    cold water current

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