PPT-structure and composition of the atmosphere

Objectives Describe the composition of Earths atmosphere Explain why air pressure changes with altitude Explain how air temperature changes with atmospheric composition Describe the layers of the atmosphere. 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. The ocean/layer of gas that surrounds the Earth. It is composed of 78% Nitrogen and 21% Oxygen. The other 1 % is a mixture of other gasses. We depend on this balance of gas for our survival. When it is out of balance, we have problems.. Stars, solar systems form within giant molecular clouds. Requires . high density. , . dust, and low temperatures. to initiate gravitational . collapse. Most material is hydrogen and helium; only a few percent is other elements. 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 . E4.p2X-A,F, I. Characteristics of the Atmosphere. Composition of the Atmosphere. Atmosphere. -mixture of gases around the Earth. 78% Nitrogen-(released from decay/eruptions). 21% Oxygen. 1% Other- (Carbon Dioxide, Argon). . 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. th. Grade . Choose Your Category!. Layers of. the Atmosphere. Heating the Earth. Climate Change. Characteristics. of the Atmosphere. 100. 100. 100. 100. 200. 200. 200. 200. 300. 300. 300. 300. 400. 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.. 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. Compounds are ALWAYS composed of elements in fixed ratios. This is often referred to as the . Law of Definite Proportions.. This law states that elements are always present in the same proportions by mass in a compound. I.e. H. Esteban . Cubillos. . CPSP218L Fall 2008. Presentation Outline. Atmosphere review. The importance of the atmosphere. The mutual relation between the atmosphere and climate change. Carbon Cycle. Water Cycle. 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 (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). . 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.