{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

PHY 118 final study guide -chapter 13

PHY 118 final study guide -chapter 13 - PHY 118 Final Study...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
PHY 118 Final Study Guide: Chapter 13 I. Air Pollutants : Airborne particles and gases that occur in concentrations that endanger the health and well-being of organisms OR disrupt the orderly functioning environment a. Primary Pollutants : Emitted directly from an identifiable source; pollute the air immediately upon being emitted b. Secondary Pollutants : Produced in the atmosphere when certain chemical reactions occur among Primary Pollutants i. Ex: Chemicals that make up smog II. Major Primary Pollutants: a. Particulate Matter (PM) - A mixture of solid particles and liquid droplets found in the air i. Fine Particles (PM 2.5) - have a diameter less than 2.5 micrometers 1. Main sources include: fuel combustion of vehicles, power generation, industrial factories, fireplaces, and wood stoves 2. Inhalation causes serious health dangers including heart and lung disease, and even premature death ii. Coarse Particles (PM 10) have a diameter above 2.5 micrometers 1. Main sources include: vehicles traveling on unpaved roads, materials handling, crushing/grinding operations, and windblown dust 2. Inhalation causes aggravation of respiratory conditions (ex. Asthma) iii. Reduce visibility, leave deposits of dirt on the surfaces they contact, damage paint, and damage building materials b. Sulfur Dioxide – Colorless and corrosive gas that originates mainly from the combustion of fuels containing sulfur (Coal + Oil) i. Main sources include: power plants, smelters, petroleum refineries, and pulp + paper mills ii. Once in the air, it is frequently transformed into Sulfur Trioxide which reacts with water vapor or water droplets to form Sulfuric Acid ; when this is “washed out” of the air it takes the form of Acid Rain (a very serious environmental issue) iii. High concentrations of sulfur dioxide can result in temporary breathing impairment for asthmatic victims; long terms effects include respiratory illness and aggravation of existing cardiovascular disease c. Nitrogen Oxides – Gases that form during the high-temperature combustion of fuel when nitrogen, in the fuel or in the air, reacts with oxygen i. Main sources include: motor vehicles and power plants ii.
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern