EPA 608 Certification Exam 2023 with 100% correct answers

Ozone stratosphere above the earth consists of molecules containing... 3 oxygen atoms (O3) The oxygen we breathe contains how many atoms in each molecule? two atoms (O2) The ozone layer consists of ozone in the stratosphere at an altitude of between __________above the earth 7 and 28 miles the ozone layer is formed by what? Ultra violet light from the sun acting on oxygen molecules,absorbs and scatter UV light from the sun What does the Ozone layer do? prevents harmful amounts of UV light from reaching Earth. What is another name for the ozone layer? ozone shield Ozone in the lower atmosphere where we breathe is caused by what? UV radiation from the sun acting on smog and air pollutants Ozone at ground level is what? Harmful pollutant Ozone in the stratosphere is what? Protective Shield The ability of a substance to destroy ozone in the stratosphere is referred to as the what? Ozone depletion potential (ODP) Chlorine in refrigerants causes what? stratospheric ozone depletion The rise in the amount of chlorine measured in the stratosphere matches what? The rise in ozone-depleting emissions of CFC's and HCFC's over the same period According to the Roland-Molina Theory how many ozone molecules are destroyed by each chlorine atom? 100,000