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20 Cards in this Set
- Front
- Back
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How are pollutants broken down?
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Pollutants are broken down or degraded by a variety of oceangraphic and biological processes.
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What is another name for oil? What is crude oil?
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Geologist refers to oil found in sedimentary depositsas crude oil or petroleum. Crude oil is is a naturally occurring liquid composed mostly of hydrogen and carbon.
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Oil is mainly a mixture of____.
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Oil is a mixture of hydrocarbons.
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Briefly explain how oil and natural gas are formed.
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Drawing off various hydrocarbons while the crude is heated.
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Name the top 5 oil- producing states. Name the top oil- producing countries.
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States: Texas, Lousiana, Alaska, California, North Dakota.
Countries: China, Iran, Russia, Former USSR, United States, Saudi Arabia. |
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Where does most of the oil in the sea come from?
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Riverrunoffs and natural tanker operations.
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What 3 factors determine the rate at which oil is dispersed?
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-The weather.
-Composition of crude oil. -Waves and currents. |
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What 2 factors determine the degree of damage in an oil spill?
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Type of petroleum, specific habitat and ecosystem.
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Waht is bioremediation?
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Stimulating the growth of micro- organisms that sctively feed on petroleum compounds.
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Name 5 methods/ techniques for cleaning up an oil spill.
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Floating booms, chemical disperants, burning the oil at the surface, skimming, and bioremediation.
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Name both natural and human sources of the following pollutants in the ocean:
a. Hydrocarbons b. heavy metals c. nutrients d. synthetic chemicals |
a. hydrocarbons- organic compound composed of hydrogen, oxygen, and carbon.
b. heavy metals- Inorganic substances. c. nutrients- cellular organelle of eukaryotic cells that contain chromosomes. d. synthetic materials. |
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What type of ecosystem is highly impacted by oil spills?
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Wetlands, salt marshes, mangroves.
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What is a pathogen?
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Disease causing organisms.
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Name the different substances that make up sewage.
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Waste, pollutants, synthetic materials.
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What is eutrophication? What causes this condition?
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Low levels of oxygen in a body of water.
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What are heavy metals? Give Several examples.
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Naturally or supplied by rivers.
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What is bioaccumulation?
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Means organisms can concentrate.
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What is biomagnification?
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is the metals concentrated in even greater amounts at each step of the food web.
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What is DDT? How does it go in the ocean?
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DDT is a highly toxic synthetic compund that used extensively by farmers and forestry.
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What are PCBs used for? How do they get into the ocean?
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PCB are highly toxic durable synthetic organic compounds that accumulate in the tissue of organisms.
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