End Of Coastal Unit Exam Practice

80 Questions | Total Attempts: 178

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End Of Coastal Unit Exam Practice - Quiz

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Questions and Answers
  • 1. 
    Choose the most complete answer to this statement.  Geologists like Dr. Pilkey define a beach as:
    • A. 

      A beach is any area of shoreline affected by winds or water.

    • B. 

      A beach is any area of shoreline affected by ordinary waves that includes the nearshore sand bar and berm.

    • C. 

      A beach is an area of the shoreline that includes the berm and is affected by ordinary waves.

    • D. 

      A beach is only the large area near the berm of the shoreline affected by ordinary waves.

  • 2. 
    How does water level affect organisms in the subtidal zone?
    • A. 

      Organisms need to be able to breathe water or hold their breath for long periods of time.

    • B. 

      Organisms need to adapt to alternating between being exposed or submerged.

    • C. 

      Organisms need to adapt to alternating between breathing or being submerged.

    • D. 

      Organisms need to adapt to alternating between being submerged or holding their breath for long periods of time.

  • 3. 
    IDENTIFY: The two major currents that affect North Carolina's climate.
    • A. 

      Laborador/Virginia and the Gulf Stream currents

    • B. 

      Gulf of Mexico and Laborador/Virginia currents

    • C. 

      Canadian and Gulf of Mexico currents

    • D. 

      Coast of Greenland and Gulf Stream currents

    • E. 

      Between the swash zone (shoreface where waves break) and the dune

  • 4. 
    Choose the best definition of a barrier island.
    • A. 

      A Barrier Island is a long, narrow body of sand separated from the mainland by a sound and from other islands by inlets at both ends.

    • B. 

      A Barrier Island is a short, wide body of sand separated from the mainland by a sound and from other islands by inlets at both ends.

    • C. 

      A Barrier Island is a long, narrow body of sand separated from other islands by a sound.

    • D. 

      A Barrier Island is a body of sand separated from the mainland by an inlet.

  • 5. 
    Why are estuaries considered brackish?
    • A. 

      Estuary waters are a mixture of tidewater and longshore current.

    • B. 

      Estuary waters are a mixture of soundwater and ocean water.

    • C. 

      Estuary waters are a mixture of soundwater and littoral drift.

    • D. 

      Estuary waters are a mixture of fresh and salt water.

  • 6. 
    The kind of sediment deposited in shoreline habitats depends on:
    • A. 

      Estuary deposits

    • B. 

      Tidal amplitude

    • C. 

      Water turbulence

    • D. 

      Coastal plain migration

  • 7. 
    What is a berm and where is it found?
    • A. 

      The back dune end of the supratidal zone

    • B. 

      The movement of sand offshore during a storm

    • C. 

      The supratidal ledge of sand at the high tide line

    • D. 

      The edge of the swash (shoreface where waves break) zone

  • 8. 
    What is the average salinity of the ocean?
    • A. 

      35 ppt

    • B. 

      55 ppt

    • C. 

      15 ppt

    • D. 

      25 ppt

  • 9. 
    What kind of sediment settle in the sound?
    • A. 

      Fine silt

    • B. 

      Loam

    • C. 

      Coarse sand

    • D. 

      Clay

  • 10. 
    What kind of sediments settle on the ocean beach?
    • A. 

      Silt

    • B. 

      Gravel

    • C. 

      Coarse sand

    • D. 

      Clay

  • 11. 
    Ocean beach habitats have three distinct zones:
    • A. 

      The subtidal zone of crashing breakers with swirling sand and shallow water; the intertidal zone, alternately covered and exposed by tidal waters; and the dry, sandy supratidal zone extending to the base of the sand dunes.

    • B. 

      The ocean zone of crashing breakers with swirling sand and shallow water; the salt marsh zone, alternately covered and exposed by tidal waters; and the dry, sandy sand dune zone extending to the base of the sand dunes.

    • C. 

      The shoreface zone of crashing breakers with swirling sand and shallow water; the intertidal zone, alternately covered and exposed by tidal waters; and the dry, sandy subtidal zone extending to the base of the sand dunes.

    • D. 

      The supratidal zone of crashing breakers with swirling sand and shallow water; the intertidal zone, alternately covered and exposed by tidal waters; and the dry, sandy subtidal zone extending to the base of the sand dunes.

  • 12. 
    Oxygen is plentiful in the ocean beach habitat because of which three factors:
    • A. 

      Wind coming off the ocean, the presence of water coming in with the tides and in the space between the sand sediment.

    • B. 

      The presence of water coming in with the tides, salt spray and plants.

    • C. 

      The wind coming off the ocean, salt spray and plants.

    • D. 

      The wind coming off the ocean, the presence of water coming in with the tides and plants.

  • 13. 
    Debris and detritus are deposited ___________________
    • A. 

      At the high tide line.

    • B. 

      At the shoreline.

    • C. 

      Along the shoreface.

    • D. 

      In the intertidal zone.

  • 14. 
    Phytoplankton are_______________________
    • A. 

      Free floating microscopic plants that are the basis of the marine food chain.

    • B. 

      Free floating microscopic animals that are the basis of the marine food chain.

    • C. 

      Free floating microscopic scavengers that support the marine food chain.

    • D. 

      Diatoms that cause red tide and are toxic to the marine food chain.

  • 15. 
    Most supratidal animals are ____________ that feed on debris and detritus along the strand line.
    • A. 

      Scavengers

    • B. 

      Decomposers

    • C. 

      Producers

    • D. 

      Herbivores

  • 16. 
    What is a gastropod?
    • A. 

      A gastropod is a mollusk that has one shell. It is a marine snail.

    • B. 

      A gastropod is a mollusk that has two shells it is a bivalve or pelecypod with a strong muscular foot.

    • C. 

      A gastropod is a mollusk that attaches itself to hard substrate to survive.

    • D. 

      A gastropod is a mollusk that has an internal shell like a squid.

  • 17. 
    Identify a key adaptation of the mole crab and coquina clam for living in the in the ocean beach intertidal zone:
    • A. 

      Both organisms burrow rapidly into the sand. The coquina clam burrows as a wave recedes. The mole card burrows backward each time a wave advances.

    • B. 

      Both organisms ride the surf to avoid the receding or advancing waves.

    • C. 

      Both organisms hibernate to avoid the receding or advancing waves.

    • D. 

      Though born on the ocean side of the barrier island, both organisms move to the sound to avoid the receding or advancing waves.

  • 18. 
    Strong winds effect the ocean beach habitat. Strong winds (of at least 10 mph) cause fine sand particles to bounce and mound into piles this is called:
    • A. 

      Saltation.

    • B. 

      Transpiration.

    • C. 

      Ocean waves.

    • D. 

      Mineralization.

  • 19. 
    Tides- the twice daily high and low flow of water onto and into a low lying shore area caused by the:
    • A. 

      Moon and sun’s gravitational pull on Earth.

    • B. 

      Moon's gravitational pull on Earth.

    • C. 

      Sun’s gravitational pull on Earth.

    • D. 

      The oceans wave energy.

  • 20. 
    Ghost crabs are unique organisms that live in deep tunnels with front and back entrances. They rarely leave their burrow during the day. Though they live in the dunes, the female deposits eggs in the ocean and the young develop there. How do ghost crabs breathe?
    • A. 

      Ghost crabs breathe through gills which must be wet with ocean water daily.

    • B. 

      Once ghost crabs come on land, they breathe air.

    • C. 

      Ghost crabs breathe both air and water because they were born in the ocean and as adults live in the supratidal zone.

    • D. 

      Ghost crabs breathe air only. As young in the ocean they came to the surface for air and continued to do so when moving to the supratidal zone.

  • 21. 
    The action of ____________________ sweeps larger shell particles and sand across the substrate surface, sometimes causing abrasions or burying plants and animals.
    • A. 

      Waves

    • B. 

      Tides

    • C. 

      Longshore current

    • D. 

      Winds

  • 22. 
    Identify the event shown in the image.
    • A. 

      Birth of an inlet

    • B. 

      Nor'easter wind tide

    • C. 

      Formation of a tidal delta

    • D. 

      Spring tide

  • 23. 
    Identify the season beach change shown in the diagram below:
    • A. 

      Spring

    • B. 

      Summer

    • C. 

      Winter

    • D. 

      Fall

  • 24. 
    How deep/thick are Barrier Islands?
    • A. 

      30 - 60 feet

    • B. 

      10 - 20 feet

    • C. 

      20 - 40 feet

    • D. 

      40 - 70 feet

  • 25. 
    Identify this hard stabilization image and what occurs as a result of its presence:
    • A. 

      It is a seawall. As as result of its presence, wave energy is redirected which enhances the erosion of both the front and sides of the wall.

    • B. 

      It is a groin. As as result of its presence, wave energy is redirected which enhances the erosion of the front of the wall.

    • C. 

      It is a jetty. As as result of its presence, wave energy is redirected which enhances the erosion of the front of the wall.

    • D. 

      It is a breakwater.

    • E. 

      Littoral current.

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