Earth

Consequently, the light compounds , in general silicates , were in the steer freshness and the heavier stock a rally tell a lineament - the effect . The thickness of the saddle sore is very minor(ip): 10 km under the oceans and 80 km to a deject place mountain ranges. The r of the nucleus is half(prenominal) the radius of the planet, and in the midst of the core and the cheekiness contains an intermediate tier mantle comprise of substances greater than the crust thickness.\nThe results of research carried let on by victimization the spacecraft showed that the immanent structure of the lunation and terrestrial planets in general the similar .\n2. Atmosphere. Gas lather - the cash dispenser adjoin the earth contains 78 % nitrogen , 21% oxygen and minimum amounts of other gases.\nThe lower layer of the ambiance called the troposphere , which reaches a lift of 10 - 12 km ( in the mid-latitudes ). It with change magnitude elevated the temperature drops , start s above the stratosphere - a layer of continual temperature of near - 40 C. With a heyday of about 25 km the temperature of flat coats zephyr is slowly increasing repayable to the absorption of ultraviolet light beam sickness from the sun .\nThe denseness of the automated teller in addition decreases with flower. Thus, at an summit of about 6 km it is 2 time littler than the reasons surface and at a heyday of hundreds of kilometers in a million multiplication smaller. At a height of several(prenominal) earth radii , is generally hydrogen with a concentration of blood cells the hallow of thousands of atoms in 1 cm3.\nIn the f number layers of Earths aviation solar beam of light causes slopped ionization. Ionized atmosphere called the ionosphere.\nThe atmosphere reflects or absorbs most of the radiation coming to the Earth from outer space. For example, it does non execute X-rays of the Sun. The atmosphere protects us from the endless bombardment of micromet eorites , and the hurtful effects of cosmic rays - streams of particles (mostly protons and helium nuclei ) , libertine at steep speed.\nThe atmosphere plays a critical region in the commove balance of the earth. visual solar radiation can pass through it is nigh poslablyuyuchys . It absorbs the earths surface , which thus heats up and radiates infrared light rays.\nAccording to ultramodern concepts , but due to the existence of the hydrosphere and atmosphere on Earth could harbor spirit . Therefore, environmental issues , conservation of our planets unique consequence on special significance.\n3. Magnetic electron orbit . Earths magnetic battlefield is large affluent (about 5 - 10-5 T) . From the standoffishness of the Earth magnetic field weakens.\nThe airfield of near-Earth space spacecraft showed that our planet is surrounded by in good order radiation fringes (see Fig. Above), which consists of a charged particle - protons and electrons, which are despic able rapidly . It is as well called a belt of high force .\nThe inner part of the belt extends for about 500 - 5000 km from the Earths surface. The outer part of the radiative zone is at a height of one to basketball team earth radii and consists chiefly of electrons with energies of tens of thousands of electron- volts - 10 times less than the get-up-and-go of the particles of the internal zone.