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 geosphere is the part of the Earth system-which also includes the biosphere, hydrosphere, and atmosphere-which is composed of the physical land on earth and all its lan â¦ dforms, including mountains, plains, deserts, etc.5 people found this useful.he geosphere can sometimes be a little hard to pin down. It's  basically the deeper part of the earth comprised of the  crust, mantle and core of the earth. It's the  de â¦ nsest part of the planet.