The Atmosphere

We have just started learning about the atmosphere in class. The first layer is the Troposphere. We live here. All weather occurs here. This is the lowest layer. The distance is 12 km to 16 km. The word "Tropo" means turning. The degrees that it can be is about -60 degrees Celsius. The next layer is the Stratosphere. The word "Strato" means layer. The distance is 16 km to 50 km. If you keep going up, the temperature rises. The next layer is the mesosphere. "Meso" means middle. This is the coldest part of the atmosphere. This protects the earth. The distance is 50 km to 80 km. The final layer is the thermosphere. "Thermo" means heat. This can get up to 1800 degrees. The distance is 80 km to space. This layer has two mini layers called the ionosphere and the exosphere. In the ionosphere, gas molecules are electrically charged. It is the lower layer out of the two mini layers. The upper mini layer is the exosphere. Satellites are in this part.