EPA 608 core 76 questions with complete solutions

The stratosphere is located how many miles above sea level? correct answers: Between 7 and 30 miles The ozone molecule consists of how many oxygen atoms? correct answers: 3 (O3) The stratosphere is comprised of? correct answers: Ozone and other gases What is the purpose of the Ozone layer? correct answers: It protects us from ultraviolet radiation and helps maintain stable earth temp Stratospheric ozone depletion is an America issue? T or F correct answers: F ( global ) What are some of the problems ozone depletion cause? correct answers: Crop loss Skin cancer Increase eye disease Reduced marine life ______ have been found in air samples taken from the stratosphere? correct answers: CFC's & HCFC's CFC stands for? correct answers: Chlorine, Fluorine & carbon HCFC stands for? correct answers: Hydrogen, chlorine, fluorine & carbon When CFC and HCFC are released into the atmosphere what in the causes the depletion? correct answers: Chlorine What compound is created when chlorine atoms encounter ozone molecules? correct answers: CIO ( chlorine monoxide) steals an O and leaves an O2 A single chlorine atom can destroy up to how many ozone molecules? correct answers: 100,000 Silicone elastomers, for use in seals and gaskets, are not compatible with which refrigerants? correct answers: HFO The chlorine in CFCs and HCFCs will dissolve in water? T or F correct answers: F A refrigerant cylinder designed to hold recovered refrigerant is what color? correct answers: Yellow top grey body