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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