Unit 4: Environmental Pollution

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Questions and Answers

What is the primary outcome of environmental pollution?

  • Harmful effects on various forms of life or property (correct)
  • Natural changes in the environment
  • No changes in the environment
  • Desirable changes in the environment

What are the components of pollution called?

  • Pollutants (correct)
  • Contamination agents
  • Environmental hazards
  • Pollution factors

What type of pollution occurs when the levels of gases, solids, or liquids in the atmosphere are high enough to cause harm?

  • Water pollution
  • Soil pollution
  • Noise pollution
  • Air pollution (correct)

What are primary air pollutants?

<p>Harmful chemicals released directly from a source (D)</p> Signup and view all the answers

What is an example of a primary air pollutant?

<p>Oxides of carbon (C)</p> Signup and view all the answers

What is produced from chemical reactions involving primary pollutants?

<p>Secondary pollutants (C)</p> Signup and view all the answers

What is the estimated number of pieces of trash in the Great Pacific Garbage Patch?

<p>1.8 trillion (C)</p> Signup and view all the answers

What percentage of ocean plastic pollution comes from just 20 countries?

<p>80 percent (A)</p> Signup and view all the answers

What is the estimated time it takes for most plastic to degrade?

<p>400 years (D)</p> Signup and view all the answers

Which two countries are responsible for the most ocean plastic pollution?

<p>China and Indonesia (A)</p> Signup and view all the answers

What is a major consequence of plastic breaking down into microplastic?

<p>It enters the food chain (A)</p> Signup and view all the answers

What is a suggested way to reduce ocean pollution?

<p>Stopping human activities like bathing near water bodies (C)</p> Signup and view all the answers

What is the process by which water is purified in the RO method?

<p>Forcing water through a semi permeable membrane (D)</p> Signup and view all the answers

What is the purpose of the Distillation method of water purification?

<p>To purify water by boiling and condensing steam (C)</p> Signup and view all the answers

What is the goal of tertiary treatment in a waste water treatment plant?

<p>To disinfect water using chlorine (B)</p> Signup and view all the answers

What is the purpose of grit removal in primary treatment of waste water?

<p>To remove physical contaminants from water (A)</p> Signup and view all the answers

What is the purpose of controlling the excess use of fertilizers and pesticides in agriculture?

<p>To reduce water pollution (C)</p> Signup and view all the answers

What is the purpose of not disposing non-biodegradable waste material such as plastic in water bodies?

<p>To reduce water pollution (A)</p> Signup and view all the answers

What type of waste can be used for the production of manures and biogas?

<p>Biodegradable waste (D)</p> Signup and view all the answers

What is the primary effect of soil pollution on land?

<p>Reduces the aesthetic value of land (C)</p> Signup and view all the answers

What is the primary source of radioactive waste?

<p>Nuclear power plants and nuclear testing (A)</p> Signup and view all the answers

What is the purpose of segregating urban waste into biodegradable and non-biodegradable waste products?

<p>To reduce soil pollution (A)</p> Signup and view all the answers

What is the term for the use of plants to remove pollutants from the soil?

<p>Phytoremediation (D)</p> Signup and view all the answers

What is one of the health effects of radioactive elements present in polluted soil?

<p>Deformities in bones (C)</p> Signup and view all the answers

What is the frequency at which the human ear is most sensitive to sounds?

<p>100 Hz (B)</p> Signup and view all the answers

What is the unit used to express sound levels, specifically for noise pollution measurements?

<p>dB-A (C)</p> Signup and view all the answers

What is a non-auditory effect of noise pollution?

<p>Anxiety (A)</p> Signup and view all the answers

What is a measure to control vehicular noise pollution?

<p>Regularly servicing the engine (B)</p> Signup and view all the answers

What is a psychological effect of noise pollution?

<p>Depression (B)</p> Signup and view all the answers

What is a measure to control industrial noise pollution?

<p>Keeping machines well-serviced (A)</p> Signup and view all the answers

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