The solar cycle or solar magnetic activity cycle is the nearly periodic 11-year change in the Sun's activity (including changes in the levels of solar radiation and ejection of solar material) and appearance (changes in the number and size of sunspots, flares, and other manifestations).
Planet earth is generally thought of a composed of the atmosphere, the hydrosphere, the lithosphere and the biosphere. The geosphere is often used to mean the same thing as lithosphere - rocks and stones. If this is how you are using the word, then the geosphere consists of the crust, the mantle and the core. Comments.
The atmosphere is divided into four main parts. They are the Troposphere, Stratosphere, Mesosphere, and Thermosphere. On the sidebar to the left, you can navigate through this website to find more information on the specific parts of the atmosphere, the formation of the atmosphere, and the credits to this site.The atmosphere surrounds and protects the Earth.hey are the Troposphere, Stratosphere, Mesosphere, and Thermosphere. On the sidebar to the left, you can navigate through this website to find more information on the specific parts of the atmosphere, the formation of the atmosphere, and the credits to this site.