CHAPTER 9.1 - 9.2 science slideeeee.pptx

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1. CHAPTER 9 : EARTH SHIVESHWAR BARATHAN GOKULA VEL YUVANVEL PREMLINGAM NAVANITHAN

2. 9.1 :THE SYSTEM & STRUCTURE OF THE EARTH The earth consists of 4 main components which are connected. Table 1 shows the 4 main components

3. This Photo by Unknown Author is licensed under CC BY Exosphere contains light gases such as helium & hydrogen. Air becomes thinner toward space. Communication satellites orbit in this layer e Thermosphere (Ionosphere) contains ions that can reflect radio waves. Aurora occurs in this Layer Burning & destruction of meteorites occur in the mesosphere layer. Stratosphere is suitable & stable for flights. The ozone layer is found here. Ozone layer depletes when chlorofluorocarbon breaks down ozone molecules in the ozone layer. Troposphere layer is where living organism breathes , wind blows and where cloud and rain comes from.