Ozone Depletion Essay

Dec 25, 2023

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Ozone Depletion Essay

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OZONE DEPLETION

OZONE DEPLETION. IS IT A SERIOUS THREAT?. The Problem:. An increase in Chlorofluorocarbons in the upper stratosphere will break down the existing ozone layer which protects life on earth from intense ultra violet rays. (review electromagnetic spectrum). Dream chemicals? CFCs discovered 1930s

546 views • 10 slides

Ozone Depletion

Ozone Depletion. Significant concentrations of ozone (O 3 ) exist in the lower elevations of the stratosphere. . Ozone in the stratosphere absorbs UV B radiation from sunlight.

600 views • 17 slides

Ozone Depletion

Ozone Depletion. O 3. Ozone Factoids. Good in the stratosphere, bad in the troposphere Produced at a height of ~50 km, settles to a height of 23 km Filters out 95 – 99% of incoming UV-A and UV-B ( 0.2 m - 0.3 m ; m = 10 -6 m )

508 views • 12 slides

Ozone Depletion

Ozone Depletion. Prepared by: Alev Saglam Tagandurdy Berdiyew. What do you know about ozone ? What is the main function of ozone layer ? What are the consequences of ozone depletion ? Discuss about these consepts for a few minutes . What is ozone?.

1.51k views • 32 slides

Ozone Depletion

By: Tori, Alyssa & Jessica. Ozone Depletion . What is Ozone? .

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Ozone Depletion

Ozone Depletion. What is the ozone layer and where is it found?. The ozone layer is the layer of the atmosphere at an altitude of 15 to 40 km (stratosphere) . What is Ozone? Ozone is a molecule made of three oxygen atoms. What is the function of the ozone layer ?

569 views • 27 slides

Ozone Depletion

Ozone Depletion. By: Pri Raval. The over usage of different man-made chemicals all over the world is now effecting the ozone layer, one of the last defenses of heat and ultraviolet light. Effect: OZONE DEPLETION. Cause:

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Ozone depletion

Ozone depletion. Ozone is O 3 . Making styrofoam, air conditioners, and refrigerants releases CFC’s CFC’s “eat” the ozone ozone protects us from the UV radiation of the sun2wv. Causes and Effects of ozone depletion. CAUSES

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Ozone Depletion

Ozone Depletion . By Sam Wilson. What is Ozone?. Ozone is super charged oxygen molecules (O3) It is made naturally by the suns energy interacting with atmospheric oxygen. wikipedia. What is Ozone cont. . Our primary defense against harmful UVB radiation from the sun

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Ozone Depletion

Ozone Depletion. What is the Atmosphere?. All of the gases that surround Earth  Mixture of mostly nitrogen and oxygen  Other gases that are present in trace amounts include argon, carbon dioxide, methane and water vapor. Composition of the Atmosphere. Nitrogen 78% Oxygen 21%

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Ozone Depletion

Ozone Depletion. UV. O 3. 1% Decrease in Ozone  Greater than 1% Increase in UV Radiation. Ozone Depleting Gases CFC’s Halons/Bromides Carbon tetrachloride Methyl chloroform HCFC’s Etc. Greenhouse Warming. Solar E. Solar E. Solar E. Albedo (1/3). Solar E. Emissivity. Solar E.

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Ozone Depletion

Ozone Depletion. E.4.1:. When ODS substances reach the ozone layer the UV rays from the sun break them down and release molecules that destroy the ozone molecules. E.4.1:. E.4.1:. CFCl3 + UV Light ==> CFCl2 + Cl Cl + O3 ==> ClO + O2 ClO + O ==> Cl + O2

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Ozone depletion

Ozone depletion. Ozone layer.

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Ozone Depletion

Ozone Depletion. Protest against ozone depletion. http://archive.greenpeace.org/~ozone/gallery/sshow/sshow.html. Video show. Answer the questions on p. 1. Importance of the ozone layer. Near ground level (trochosphere) - pollution Form photochemical smog and acid rain

1.36k views • 44 slides

Ozone Depletion

Ozone Depletion. Dr. Matthew Lukeman Department of Chemistry. Structure of the Atmosphere. Ozone is found throughout the stratosphere and troposphere, and the â€˜ozone layerâ€™ is where the concentration peaks. Where is Ozone Found?. Where is Ozone Found?.

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Ozone depletion

Ozone depletion. O 3 very pale bluish gas very powerful oxidising agent pungent smelling odor absorbs UV light detection : [O 3 ] in a sample of air can be measured using UV spectroscopy; the more UV is absorbed the higher [O 3 ] in upper stratosphere; 15 to 45 km. Ozone depletion.

398 views • 12 slides

Ozone Depletion

Ozone Depletion. Ozone. O 3 is an unstable molecule formed when O 2 is split by UV making 2 O atoms which then recombine with O 2 in atm to reform O 3 Ozone layer = high concentration of ozone in the lower stratosphere with maximum concentration at ~25 km altitude

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Ozone Depletion

J(Hans) van Leeuwen. Ozone Depletion. – The hole story. Stratospheric ozone and its importance. Solar Spectrum. 400nm. 100nm. Visible Light. Radio. IR. UV. X-Rays. l. Far UV. UV-A. UV-B. UV-C. 300nm. 200nm. DNA damaging range. The Ultraviolet Spectrum.

1.31k views • 45 slides

OZONE DEPLETION

OZONE DEPLETION. Eric Lin, Cody Lu Natalie Qin, Silvia Shi. The ozone layer is essential to organisms because it protects them from harmful effects of the sun. A major issue for our planet is the depletion of the ozone layer. Q. What is ozone depletion and how is it affecting our ecosystem? .

1.58k views • 15 slides

Ozone Depletion

Ozone Depletion. by Manuela B & Penelope L. What is the issue?. The ozone is depleting Chlorofluorocarbons (CFC’s) UV radiation will hit earth. How does this issue relate to weather?. CFC’s = Greenhouse gases Global Warming makes weather more extreme.

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Ozone depletion

Ultra-Violet Radiation (U.V.): wavelength less than 0.4 μ m. 1.2% of the Sun's radiant energy occurs at  <0.3 μ m. U.V. with  <0.3 μ m (photon energy>4eV) is strongly ionising. Can lead to skin cancers, cataracts, etc. It can harm corps and disrupts aquatic ecosystems.

251 views • 8 slides

Ozone Depletion

Ozone Depletion. Significant concentrations of ozone (O 3 ) exist in the lower elevations of the stratosphere. Ozone in the stratosphere absorbs UV B radiation from sunlight.

331 views • 17 slides

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