Layers: Troposphere-Stratosphere-Mesosphere-Thermosphere. Just above, it is the cloudy Troposphere, up to about 10 km. Just above is Stratosphere, with ozone layer atop that absorbs harmful solar ultraviolet rays.. Above is Mesosphere, with low temperature (up to −100oC ) and pressure (1/1000 of sea-level pressure).
Four Main Layers: Troposphere, Stratosphere, Mesosphere, Thermosphere. Four Minor Layers: Ozonosphere, Ionosphere, Exosphere, Magnetosphere. Ionosphere and Exosphere are part of the Thermosphere. Troposphere is most important because we live in it!
When the solar system settled into its current layout about 4.5 billion years ago, Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun. Like its fellow terrestrial planets, Earth has a central core, a rocky mantle, and a solid crust.
MercuryThis is why Mercury has no atmosphere, but much smaller and colder Pluto can still retain a thin atmosphere.
A pair of researchers from Toho University and NASA Nexus for Exoplanet System Science has found evidence, via simulation, that Earth will lose its oxygen-rich atmosphere in approximately 1 billion years.
the stratosphereMost atmospheric ozone is concentrated in a layer in the stratosphere, about 9 to 18 miles (15 to 30 km) above the Earth’s surface (see the figure below). Ozone is a molecule that contains three oxygen atoms.
Half of the earth’s atmosphere, and consequently the most oxygen, is found in the troposphere (which is also the layer that s closest to the surface of the earth). Almost all dust and water vapor in the atmosphere is also in this layer. Another useful layer is the one just above the troposphere, the stratosphere.
Commercial jet aircraft fly in the lower stratosphere to avoid the turbulence which is common in the troposphere below. The stratosphere is very dry air and contains little water vapor. Because of this, few clouds are found in this layer and almost all clouds occur in the lower, more humid troposphere.
These five different layers provide protection and also make life possible because of the constituent gases which state the significance and importance of the atmosphere. The five layers provide a wide range of distribution of gases and the densities of the gases at each layer of the atmosphere.
The name ionosphere comes from the fact that gases in these layers are excited by solar radiation to form ions, which have an electrical charge.
