PPT-1 Earth’s Atmosphere and The Ozone Layer

GLY 4241 Lecture 6 Fall 2016 2 Earth Even in a high resolution image from space the atmosphere is not visible 3 Radiation NASA graphic 4 Chinese Smog Haze over China Increased desertification has added dust to Chinas atmosphere. DEPLETION. What is Ozone?. Two different layers in the atmosphere:. . Troposphere. Stratosphere. . What is ozone layer?. Ozone layer is a thin, fragile shield that contains relatively high concentrations of ozone.. Layer. Depletion. “. Life’s Support System Depletion. ”. Outline of Presentation. What is the Ozone layer?. How is ozone created and destroyed?. What is the Ozone hole?. What are the causes of Ozone Depletion?. The . ozone layer. is a layer in . Earth's atmosphere. which contains relatively high concentrations of . ozone. (O. 3. ). . This layer absorbs 97–99% of the . Sun. 's high frequency . ultraviolet light. Definition of the Atmosphere. . The layer of gases surrounding Earth; composed mainly of 78% nitrogen and 21% oxygen, and other gases (water vapor, dust, pollutants, etc.). Brainpop: . Earth’s atmosphere. By Hero Kim. Gr.8- Nelson Mandela. http://www.allsciencesites.com/news/gallery/the-earths-atmosphere-composition/the_earths_atmosphere_composition.jpg. content. Basic information about atmosphere. Stratosphere. What is the atmosphere?. Definition: The envelope of gases surrounding planet Earth.. Why do we need the atmosphere?. The atmosphere provides protection for the planet from objects in space and contains gasses that help sustain life.. A layer of the atmosphere that is closest to the Earth’s surface. Almost all weather occurs here. Temperature decreases as altitude increases. STRATOSPHERE. Layer above the troposphere. Extends from 18-50 km. . General Characteristics. Composition- Gases, water vapour and dust particles. Structure: Layered structure, variation with altitude, latitude and seasons; Importance and characteristics of each layer.. 7.5 Composition and Structure of the Atmosphere What is the composition of Earth’s Atmosphere? SC.6.E.7.9, LA.6.2.2.3 Composition of Earth’s Atmosphere The atmosphere is the protective covering of Earth. It keeps Earth warm and protects it from professor . Dr.HUDA. FAROOQ ZAKI. INTRODUCTION TO ENVIRONMENTAL POLLUTION. Pollution : is the addition to the ecosystem of something which has a detrimental effect on it .. Pollution : is the presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects. . The . ozone layer or ozone shield . is a region of Earth's stratosphere that absorbs most of the Sun's UV radiation. . It contains high concentration of ozone (O3).. It is a pale blue gas at room temperature.. . The layer of gases surrounding Earth; composed mainly of 78% nitrogen and 21% oxygen, and other gases (water vapor, dust, pollutants, etc.). Brainpop: . Earth’s atmosphere. Layers of the Atmosphere. 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. c.. 70 km (. c.. 43 mi), characterized by a relatively constant composition of its component gases. Air above a region of surface high pressure is more dense than air above . a region of surface low pressure (at the same temperature). .