Atmosphere consists of a complex mixture of a number of gases, water vapour and a variety of fine particulate matter (Table). 3. The current composition of the Earth's atmosphere is the product of billions of years of biochemical modification of the paleoatmosphere by living organisms. These include the Moon (sodium gas), Mercury (sodium gas), Europa (oxygen), Io (sulfur), and Enceladus (water vapor). The atmosphere is so spread out that we barely notice it, yet its weight is equal to a layer of water more than 10 meters (34 feet) deep covering the entire planet. These notes give a brief look at the different layers including the Exosphere, Thermosphere, Mesosphere, Stratosphere, and the Troposphere. Article shared by The air surrounding the Earth is called the atmosphere. This article is about an atmosphere of a celestial body. Earth's atmosphere consists of a number of layers that differ in properties such as composition, temperature and pressure. So, if the barometer indicates high pressure or rising air pressure, you can conclude that the weather will be cool and dry. Importance of the Atmosphere ● Keeps planet warm (Greenhouse effect) ● Provides oxygen to breathe (makes respiration possible) ● Protects us from small meteors ● Has ozone that protects us … Evidence of these changes, though indirect, is abundant. Class 11 Geography Notes Chapter 11 Water in the Atmosphere. Carbon dioxide is removed from the atmosphere by photosynthesis. The presence of oxygen becomes negligible at the height of 120 km from the surface of earth with regards to the composition of atmosphere. Atmosphere Composition and Structure Notes The domain of Air on the Earth GEOGRAPHY (iii) This is the most important layer of the atmosphere because all kinds of weather changes take place only in this layer. Earth and Titan are known to have liquids at their surface and terrain on the planet suggests that Mars had liquid on its surface in the past. An atmosphere is more likely to be retained if the gravity it is subject to is high and the temperature of the atmosphere is low. The sun heats layers of the atmosphere causing it to convect driving air movement and weather patterns around the world. 2016 air quality indicator - light colors have lower air quality and thus higher air pollution. Each of the layers has a different lapse rate, defining the rate of change in temperature with height. 2. However, over the past 3 billion years Earth may have lost gases through the magnetic polar regions due to auroral activity, including a net 2% of its atmospheric oxygen. The planet's atmospheres were then modified over time by various complex factors, resulting in quite different outcomes. Das Noten-Set mit Liedern zum Album "Atmosphäre" enthält alle 12 Songs des aktuellen Albums. Ans. Notes on Atmosphere dora zhang What difference does an atmosphere make to an environment, a sit-uation, or a horizon of possible action? 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