Vocabulary 4 petroleum products
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Vocabulary #4 Petroleum Products. ESL 201/202 Week #2. Constraint (n). Something that restricts thought or action Constrain (v) Example: Cost is often a constraint in considering petroleum alternatives. Contamination (n). Being made less clean by a germ or a hazardous substance

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Constraint n
Constraint (n)

  • Something that restricts thought or action

  • Constrain (v)

  • Example: Cost is often a constraint in considering petroleum alternatives.


Contamination n
Contamination (n)

  • Being made less clean by a germ or a hazardous substance

  • Contaminate (v); contaminant (n)

  • Example: The Exxon Valdez oil spill contaminated the water around Alaska.


Deplete v
Deplete (v)

  • To greatly decrease the supply of a resource or material

  • Depletion (n)

  • Example: We must be careful not to deplete our natural resources.


Dispose of v
Dispose of (v)

  • To throw away; to get rid of; to kill

  • Disposal (n); disposable (adj)

  • Example: The factories were required to dispose of their waster properly.


Elementally adv
Elementally (adv)

  • In terms of elements; basically

  • Element (n); elemental (adj)

  • Example: In chemistry, you study the different elements.


Emission n
Emission (n)

  • Sending out from a small space into the general environment; a substance discharged into the air

  • Emit (v)

  • Emission is usually followed by an “of” phrase

  • Example: Factories must cut back on their emissions of pollutants.


Extinction n
Extinction (n)

  • Complete disappearance; the end of existence

  • Extinct (adj)

  • Example: Dinosaurs have been extinct for millions of years.


Reservoir n
Reservoir (n)

  • A place where liquid is collected and stored

  • Reserve (v)

  • Example: The reservoir had become polluted by the chemical spill.


Shrink v
Shrink (v)

  • To become reduced in size, amount, or value

  • Shrinkage (n); shrinkable (adj)

  • Example: The population of pandas has shrunk in the last 100 years.


Stable adj
Stable (adj)

  • Firm and dependable; showing little change

  • Stability (n); stably (adv)

  • Example: The earth’s temperature has never been stable.


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