Air Pollution
Ozone Depletion
Protecting the atmosphere
What is catalysis, its type and its application
Ozone Problem Lecture-3. Introduction That is, the layer of life-protecting ozone found at the top of the stratosphere. A brief history of the discovery.
Recall – quick questions
1974 Sherwood Rowland & Mario Molina Calculated that CFCs were lowering the average concentration of Ozone in the stratosphere. Chemical Time Bomb: Spray.
Atmosphere
Stratospheric Ozone Depletion IB syllabus: 5.6.1-5.6.6 AP syllabus Ch 17, 18 Video – The Hole Story.
Recall – quick questions 1.In which 2 layers of the atmosphere is ozone found? 2.Where is it considered “good” and “bad”? Why? 3.What happens to the structure.
Atmosphere Review Composition of air –Nitrogen (78%) –Oxygen (21%) –Water vapor (0.01-4%) –Argon (< 1%) –Carbon dioxide (0.037%)
