PPT-Chapter 2: Atmosphere: Origin, Composition, and Structure

Key Terms Atmosphere a thin envelope of gases that encircles the earth and other particles aerosols Weather the state of the atmosphere at a specific place and time Meteorology the study of the atmosphere and the processes that cause weather. Controlled atmosphere storage refers to the constant monitoring an d adjustment of the CO and O levels within gas tight stores or containers The gas mixture will constantly change due to metabolic activity of the respiring fruits and vegetables in t A Reynolds’ Production 2010. Review Really Fast. All . elements are pure substances . because it has . one type of atom . and . cannot be broken. down.. All . compounds are. made up of . 2 or more elements chemically joined together to form a new substance.. and the Impact on Living Things. Earth’s Atmosphere. The gases that surround Earth (and other planets) make up the atmosphere. These gases are like an envelope that protects us from the radiation that is caused by the sun’s . . General Characteristics. Composition- Gases, water vapour and dust particles. Structure: Layered structure, variation with altitude, latitude and seasons; Importance and characteristics of each layer.. Objectives. Describe the composition of Earth’s atmosphere.. Explain why air pressure changes with altitude.. Explain how air temperature changes with atmospheric composition.. Describe the layers of the atmosphere.. Weather. Whether the weather be fine,. Or whether the weather be not,. Whether the weather be cold,. Or whether the weather be hot,. We'll whether the weather. Whatever the weather. Whether we like it or not. “…sparked by just the right combination of physical events & chemical processes…”. Bacteria. Archae-. bacteria. Animalia. Fungi. Protista. Plantae. 4500. 4000. 3500. 3000. 2500. 2000. 500. . 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 ATMOSPHERE Composition of the Atmosphere The atmosphere is comprised of a variety of gases: Major Constituents (99%): Nitrogen (N): 78% Oxygen (O 2 ): 21% Trace Constituents: Other: 1% Theories of origin of life. What is life?. The condition that distinguishes . animals and plants. from . inorganic matter. , including the capacity for . growth. , . reproduction. , . functional activity. (they are trivially simple, but they do give some interesting results if you ask the right questions). The Physical Principal – . Conservation of Mass. Bulk Silicate Earth . (the hypothetical homogeneous composition of the solid silicate Earth after core formation, but before any other differentiation process). . of . Atmosphere . Composition of the Atmosphere Permanent . constituents. Gases . that remain essentially constant by . percent: . Nitrogen. , Oxygen, Argon, Neon, Helium, Krypton, Hydrogen Variable constituents . Dr.. R. K. . Jaiswal. Asstt. . Prof.-cum-Jr. Scientist. Dept. of Livestock Products Technology. Bihar Veterinary College. Bihar Animal Sciences University. Patna-800014 (Bihar). Introduction. Egg . is a complete food consumed throughout the world. .