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Unit C Review

Quiz by Hannah Childers

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63 questions
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  • Q1
    Which of these contain most of Earth's water?
  • Q2
    Where is most of the freshwater on Earth located?
    in the oceans
    in polar ice and glaciers
    under the ground
    in rivers, streams, and lakes
  • Q3
    A rock layer that collects and stores water is called?
    a hydrosphere
    a glacier
    an aquifer
    an estuary
  • Q4
    An area of land that drains into a river or lake is called
    a habitat
    a watershed
    an ecosystem
    a wetland
  • Q5
    Pamlico Sound is an estuary because it is
    an area fed by several rivers
    an area that is protected by land on both sides
    an area that many watersheds drain into
    an area where freshwater mixes with saltwater
  • Q6
    An ocean basin is
    the layer of the ocean closest to the surface
    a continuous body of water that covers 70% of Earth's surface
    a part of Earth's surface covered by ocean water
    a deep trench along the floor of the ocean
  • Q7
    What is the source of most of the salt in the ocean
    human activities
    rocks on land
  • Q8
    Which is NOT a threat to living ocean resources?
    oil spills
  • Q9
    Which are the main producers in the ocean?
    algae and other microscopic organisms
    seaweed growing on the ocean floor
    microorganisms living near vents in the ocean floor
    sea grasses growing on the ocean floor
  • Q10
    Producers in the upper part of the ocean get nutrients from
    their roots, which grow into the ocean floor
    materials brought to the surface by upwellings
    river water that washes out to the ocean
    dead organisms floating in the water
  • Q11
    How are estuaries different from lakes or the ocean?
    estuaries contain both saltwater and freshwater
    estuaries contain only salt water
    estuaries are not bodies of water
    estuaries contain only freshwater
  • Q12
    An example of non-point source of pollution
    oil from a leaking underground tank
    fertilizer runoff from lawns
    chemicals released from a paper mill
    wastewater from a leaking pipe
  • Q13
    A clear example of point-source pollution is
    feedlots wastes in a river
    oil spilling from a supertanker
    trash floating in ocean water
    salts from irrigation
  • Q14
    What is a possible effect of high nutrient levels in water systems?
    hotter water
    healthier fish
    algal bloom
    fewer algae
  • Q15
    Which of the following occurs when algae decompose in the ocean?
    the ocean water releases excess oxygen into the air
    decomposers add oxygen to the ocean water
    decomposers remove oxygen from the water into the air
    decomposers at the ocean's surface remove oxygen from the air

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