Chapter 13 Vocab Chlorofluorocarbons (CFCs): Synthetic organic compounds first created in the 1950s and used primarily as refrigerants and as propellants. The role of CFCs in the destruction of the ozone layer led to the signing of an international agreement (the Montreal Protocol). Anthropocene: Geological epoch defined by atmospheric chemist Paul Crutzen to acknowledge the central role humans play in shaping the Earth’s environment. Pangaea: The primeval supercontinent‚ hypothesized
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many awards for his research‚ Motto: “Keep the mind open to possibilities.” Dr. Risowski- This professor specializes in the research and development of generator ozone equipment. While the research is not complete‚ he teaches classes that further the development of this type of equipment in order to combat damage to the Ozone layer. This professor has a research lab that is active and used by his students so that they can contribute to the research of this school. Motto: “There is an answer
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equipment and other large machineries‚ especially if it’s in a large population area‚ as our actions on the construction site could affect the local community. Ozone quality: Ozone is a gas that shields the earth’s and occurs naturally in the earth’s upper atmosphere. It protects the earth from harmful ultraviolet radiation. Without the Ozone layer there would be no life on earth! Chemicals such as
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explanatory studies and mental model interviews that was conducted in 1994 responders regarded climate change as both bad and high likely. So far so good. But the majority of them confused stratospheric ozone depletion with the greenhouse effect which are two completely different phenomena. Explanation of ozone destruction with the two lines‚ the cloud and the human activities (a cloud that protects us from harmful sun rays. But it’s just a cloud. The gases that came from human creations like sprays and
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division accounted for two percent of Du Pont’s revenue and employed 1200 people. Starting in the early 70s‚ concerns have been expressed that CFCs contribute to and might cause the depletion of the ozone layer. In 1988‚ however‚ the first hard evidence was published proving that CFC causes the ozone layer to deplete. This contribution to the depletion is‚ according to the evidence‚ widespread and more severe than originally believed. In face of the new evidence‚ Joe Glas‚ CEO of Du Pont Freon Products
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There are many other ways humans can interact with the atmosphere but I will talk mainly about how human interaction is creating holes in the ozone‚ how we have created the enhanced greenhouse effect and contributing to global warming. The ozone is a thin layer of O3 that surrounds the earth and helps to regulate climate and temperature. Without the ozone there would be a lot more insolation and the earth would probably be too hot to populate. Chlorofluorocarbons or CFC’s were used
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used in other applications‚ such as propellants in aerosol spray cans and asthma inhalers. The Society of Chemical Industry awarded Midgley the Perkin Medal in 1937 for this work. However‚ Midgley’s discovery resulted in damage to the earth’s Ozone layer. Two‚ Midgely discovered the effectiveness of tetraethyl lead as an antiknock additive for gasoline. On October 30‚ 1924‚ Midgley participated in a press conference to demonstrate the safety of TEL. In this demonstration‚ he poured TEL over his
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Sun and the Earth’s interior 1.6 2. Nitrogen and oxygen make up 99% of the volume of clean‚ dry air. Nitrogen: 78%‚ Oxygen: 21% 4. Ozone is a form of oxygen that combines three oxygen atoms into each molecule. Its presence of the ozone layer in our atmosphere is crucial because it absorbs the potentially harmful ultraviolet radiation from the Sun. 1.7 3. Ozone depletion seriously affects human health‚ animal life‚ and plant life. 4. The Montreal Protocol represents a positive international
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Why study weather and climate: Influences our daily activities Influences agriculture‚ energy use‚ weather resources‚ transportation‚ and industry Understand and predict severe weather Understand‚ predict‚ and mitigate long term changes Hurricane Irene: one of the top 10 hurricanes since 1980. Definitions: Meteorology: The scientific study of the atmosphere * Weather: Climate: Long term trend (average‚ high and low extremes)‚ temperature‚ wind‚ humidity‚ rainfall‚ etc. Basic components:
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for foams and packing materials‚ as solvents‚ and as refrigerants. They are classified as Halocarbons‚ a class of compounds that contain carbon and halogen atoms‚ and are amongst a group of substances called "greenhouse gases". They eat away at our ozone and raise the temperature of our planet significantly‚ causing detrimental damage to our planet. Chlorofluorocarbons (CFC’s) are a man-made substance that did not previously exist to the industrial area. They are a product of a collaboration of
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