| ANSWERS |
QUESTIONS |
| Nutrients |
- This nutrient is used by diatoms to form a shell.
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- This essential element is needed for respiration.
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- These two nutrients are found in fertilizers.
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- What are nitrogen and phosphorus?
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| Water Characteristics |
- Mass and volume are important to this property of water.
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- The Mississippi River delivers this type of water into the Gulf
of Mexico.
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- Cold, saltwater is more _____ than warm freshwater.
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- Water is composed of these two elements.
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- What are oxygen and hydrogen?
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- This phenomenon occurs when water masses separate into layers.
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- When too many nutrients are present.
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- What is nutrient over enrichment?
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| What Is Or Isn't In The
Water? |
- The concentration of dissolved salt in water is called this.
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- The absence of dissolved oxygen in water causes this condition.
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- DO stands for _____ _____ .
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- What is dissolved oxygen?
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- These three nutrients are necessary for growth of diatoms and
other phytoplankton.
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- What are nitrogen, phosphorus and silica?
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- The concentration of oxygen in water is referred to as this.
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- What is dissolved oxygen?
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- An area is considered hypoxic when dissolved oxygen is below
this value.
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| What Does Water Do? |
- This term refers to the movement of water or materials from
one place to another.
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- Rainwater that flows over land and
drains into streams is called this.
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- This type of pollution comes from a
single source, for instance a specific
pipe at a factory.
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- This type of pollution comes primarily from agricultural and
urban runoff and other sources.
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- What is nonpoint pollution?
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- The land area that is drained by a stream or river is called
this.
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- This material is carried and deposited by water.
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| Processes |
- This process occurs when organic matter is broken down.
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- These organisms use up oxygen while decomposing dead plants
and animals.
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- This natural physical force causes mixing in the ocean to occur.
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- This area in the water column is where the strongest change
in density occurs with depth.
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- This area in the Gulf of Mexico is a place where most living
things cannot survive.
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- Oxygen is consumed during this process.
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- This process is caused by an increase in organic production
where nutrient supply is high.
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| Living Things |
- This explosive increase of phytoplankton populations contributes
to hypoxic conditions.
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- This group of organisms lives on the ocean bottom.
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- These animals escape hypoxic
conditions by leaving the area.
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- What are crabs, shrimp and fish?
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- These animals cannot escape hypoxic conditions because they
cannot move.
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- What are worms and clams?
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- This group of algae protects itself with a thin silicon shell.
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- These free floating plants are the
foundation of the food chain in the ocean.
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| Working In The Field And
With Data |
- This diagram shows vertical features along a transect.
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- Samples are taken at these places.
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- This pre-established line is used for
systematically setting up sample stations.
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- This plotted line shows data vertically.
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- This instrument is used to determine water clarity.
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- Dissolved oxygen is measured
in these units.
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- What are milligrams per liter?
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- This vertical profile of water from the surface to bottom is
sampled to determine physical, chemical and biological characteristics
of the ocean.
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- What is the water column?
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| Location, Location |
- In the ocean, photosynthesis occurs mainly here.
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- Plankton land here when they die.
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- This occurs when warmer, fresher water settles over cooler,
saltier water.
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- This shallow part of the sea is an extension of the mainland.
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- What is the continental shelf?
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| U.S. Water Bodies |
- Hypoxic conditions have occurred in this Alabama bay.
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- The largest hypoxic area in the U.S. occurs in this water body.
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- What is the Gulf of Mexico?
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- This water body drains 40% of the contigueous U.S.
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- What is the Mississippi River?
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- Hypoxic conditions have occurred in these two Florida bays.
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- What are Perdido and Hilisborough bays?
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- Pamlico Sound is located in this state.
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- Hypoxic conditions occur in this northeastern Bay, known widely
for its blue crabs.
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- What is the Chesapeake Bay?
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- Hypoxia has been reported in this U.S. water body, which is
bordered by three states.
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- What is Long Island Sound?
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| World Water Bodies |
- This hypoxic sea is bordered by Romania, Bulgaria and Russia.
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- Italy shares coastlines with several
countries along this water body where hypoxia has been reported.
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- What is the Adriatic Sea?
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- Greece and Turkey share coastlines
with this sometimes hypoxic sea.
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- This small, hypoxic sea is connected
to the Black Sea.
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- Hypoxia has been reported in the
Seancih Inlet in this country.
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- Artius Bay is in this European country.
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- Hypoxic Kiel Bay borders this country.
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