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Eleventh Grade (Grade 11) Oceanography and Hydrology Questions

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Grade 11 Oceanography and Hydrology
This layer of the ocean receives sunlight and is wind-stirred.
  1. deep zone
  2. surface zone
  3. thermocline
  4. pressure
Grade 11 Oceanography and Hydrology
What is the difference between hydrothermal vents and cold seeps?
  1. There is no difference.
  2. Cold seeps are found in very, very deep water, while hydrothermal vents are found in very, very shallow water.
  3. Hydrothermal vents emit hot water, while cold seeps emit water that is the same temperature as the surrounding water.
  4. Cold seeps do not really exist, while hydrothermal vents are only found on Mars
Grade 11 Oceanography and Hydrology
Life along the floor of the mid-ocean ridges depends on which of the following?
  1. sunlight
  2. chemosynthesis
  3. photosynthesis
  4. all of the above
Grade 11 Oceanography and Hydrology
A fleshy filament growing from the mouth or snout of a fish.
  1. Barbel
  2. Lateral line
  3. Operculum
  4. Sirenian
Grade 11 Oceanography and Hydrology
What are the deepest parts of the ocean called?
  1. Continents
  2. Deep-sea trenches
  3. Seamounts
  4. Abyssal plains
Grade 11 Oceanography and Hydrology
The sea levels are rising. Evidence suggests the cause is
  1. global warming.
  2. glaciers getting bigger.
  3. the ocean water getting more dense.
  4. lower temperatures on Earth's surface.
Grade 11 Oceanography and Hydrology
Which organisms live in the deep areas of the ocean floor?
  1. decomposers
  2. filter feeders
  3. jellyfish
  4. a and b
Grade 11 Oceanography and Hydrology
This is a 1 to 2 kilometer deep, several kilometers wide, landfrom which splits many segments of the oceanic-ridge crust.
  1. continental shelf
  2. mid-oceanic ridge
  3. oceanic crust
  4. rift valley
Grade 11 Oceanography and Hydrology
An increase in which of the following would most likely decrease the concentration of gases in seawater?
  1. salinity
  2. pressure
  3. wind speed
  4. wave turbulence
Grade 11 Oceanography and Hydrology
Small aquatic animals that form moss-like or branching colonies are called                .
  1. detritus
  2. bryozoans
  3. ctenophora
  4. zooplankton
Grade 11 Oceanography and Hydrology
Organisms that spend their entire lives as plankton are called what?
  1. coelenterate
  2. echinodermata
  3. haloplankton
  4. gastropod
Grade 11 Oceanography and Hydrology
Match the term in the first column with its meaning in the second column.
__ Phytoplankton A. Heterotrophic or detritivorous microscopic invertebrate animals that drift in the water.
__ Dinoflagellate B. Dinoflagellates found in fresh and marine waters with two flagella often cause red tide
__ Gonyaulax C. Algae that grow on the sediment at the bottom of a body of water
__ Red tide D. Animal phylum with exoskeletons, often covered with spines and radical symmetry (sea stars, urchins, cucumbers, and sand dollars.)
__ Benthic algae E. Group of autotrophic protista found in the ocean that move using a whiplike projection
__ Echinodermata F. Tiny autotrophic organisms that float in the ocean and serve as the foundation of the marine food chain.
__ Haloplankton G. Small aquatic animals that form moss-like or branching colonies
__ Zooplankton H. Organisms that spend their entire lives as plankton.
__ Gastropod I. Mollusks with a single coiled shell, muscular foot, and eyes and feelers (snail, limpets, slugs)
__ Bryozoans J. Common name for such a phenomenon where certain phytoplankton "bloom" such that the water appears to be color red. Most often not harmful.
Grade 11 Oceanography and Hydrology
What is a guyot?
  1. A seamount whose peak has been eroded and become a flat surface
  2. A fancy seagull
  3. Deep-sea trench
  4. A scientist who studies the ocean floor
Grade 11 Oceanography and Hydrology
Which of the following is NOT a coastal feature?
  1. archipelago
  2. plateau
  3. strait
  4. peninsula
Grade 11 Oceanography and Hydrology
This is the continuous submarine mountain chain that encircles the globe.
  1. The Mid-Oceanic Ridge system
  2. The Subduction System
  3. The Continental Margin
  4. The Sea Valley Floor
Grade 11 Oceanography and Hydrology
A trench occurs when
  1. one tectonic plate moves under another.
  2. sediment moves to the bottom of the ocean.
  3. the bottom of the ocean collapses.
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