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Oceanography physical and chemical

Quiz by Sheena Hidalgo

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15 questions
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  • Q1
    What is the primary gas dissolved in ocean water that affects its chemistry and supports marine life?
    Carbon dioxide
    Nitrogen
    Hydrogen
    Oxygen
    30s
  • Q2
    What pH range is typically considered as neutral in ocean water, indicating a balance between acidity and alkalinity?
    6 to 7
    7 to 8
    4 to 5
    8 to 9
    30s
  • Q3
    Which nutrient is essential for the growth of phytoplankton and often limits their productivity in ocean waters?
    Nitrogen
    Phosphorus
    Iron
    Silica
    30s
  • Q4
    What process describes the movement of ocean water caused by the gravitational pull of the moon and the sun?
    El Niño Effect
    Thermal stratification
    Tidal action
    Upwelling
    30s
  • Q5
    What type of bond is primarily responsible for the unique properties of water, such as its high surface tension and boiling point?
    Van der Waals forces
    Covalent bond
    Hydrogen bond
    Ionic bond
    30s
  • Q6
    What is the primary mechanism by which surface ocean currents are generated?
    Earth's rotation
    Wind action
    Thermal expansion
    Tidal forces
    30s
  • Q7
    Which chemical property of water allows it to dissolve a wide range of substances, making it known as the 'universal solvent'?
    Density
    Nonpolarity
    Polarity
    Viscosity
    30s
  • Q8
    What is the process called when seawater undergoes evaporation, leaving salts behind?
    Sublimation
    Melting
    Condensation
    Evaporation
    30s
  • Q9
    What is the primary factor that drives ocean currents on a large scale?
    Gravity
    Wind
    Salinity
    Temperature
    30s
  • Q10
    Which phenomenon describes the periodic rise and fall of water levels in the oceans, primarily caused by the gravitational forces exerted by the Moon and the Sun?
    Waves
    Thermocline
    Tides
    Currents
    30s
  • Q11
    What is the main source of nutrients that supports the productivity of marine ecosystems in the euphotic zone?
    Thermocline
    Upwelling
    Sedimentation
    Downwelling
    30s
  • Q12
    Which layer of the ocean is typically characterized by temperatures near freezing and contains the majority of the world's ocean water?
    Mesopelagic zone
    Thermocline
    Epipelagic zone
    Deep ocean
    30s
  • Q13
    What is the primary cause of the salty nature of seawater?
    Salt evaporation
    Photosynthesis
    Volcanic activity
    Weathering of rocks
    30s
  • Q14
    What is the primary gas responsible for ocean acidification as a result of increased atmospheric levels?
    Carbon dioxide
    Methane
    Oxygen
    Nitrogen
    30s
  • Q15
    Which layer of the ocean is characterized by the temperature decrease with depth, typically found between 200 meters and 1000 meters?
    Hypolimnion
    Thermocline
    Benthic zone
    Epipelagic zone
    30s

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