Album #2

Introduction:

In these chapter we will learn how the force of gravity was discovered by Newton, how the sun affects the Earth, the live in it, and we will compare the difference between the moon and our beloved planet.


Planers and her describtions:



Mecury: Mercury is the innermost and smallest planet in thesolar system.Mercury has no natural satellites,and its only known geologiocal features besides impact craters are lobed ridges or rupes, probably produced by a period of contraction early in itshistory.

Venus:Venus is close in zise to Earth, and like Earth, has a thick silicate mantle around an iron core, a substantial atmosphere and evidende of international geological activity. Venus has no natural satellites. It is the hottest paknet, with surface temperature.

Earth:Earth is the largest and denset of the inner planets, the only obe known to have current geological activity, and is the only place in the universe where life is known to exist. Earth´s atmosphere is radically different from those of the other planets, having been altered by the presence of life to contain 21% free oxygen . It has one natural satellite,the moon ,the only large satellite of a terrestrial planet in the Solar System.

Mars:Mars is the smaller than the Earth and Venus. It possesses an atmosphere of mostly carbon dioxide with a surface pressure.Its red colour comes from iron oxide ( rust) in its soil. Mars has two tiny natural satellites ( Deimos and Phobos) though to be captured asteroids.

Jupiter:Jupiter´s strong international heat creates a number of semi-permanent features in its atmosphere, such as cloud bands and the Great Red Spot. Jupiter has 63 known satellites.

Sturn:Saturn is distinguished by its extensive ring system, has several similarities to Jupiter, such as its atmospheric composition and magnetospere. The rings of Saturn are made up of small ice and rock particles . Saturn has 2 confirmed satellites; two which Titan and Enceladus, show signs of geological activity, though they are largely made of ice.

Uranus: Is the lightest of the outer planets. Uranus has 27 known satellites, the largest ones being Titania, Oberon, Umbriel, Ariel and Miranda.

Neptune: It radiatyesvmore international heat, but not as much as Jupiter orSaturn. Neptune has 13 known satellites. The largest, Triton, is geologically active, with geyers of liquid nitrogen.

Conclusion:

Force of gravity is verry important to keep everything in place including earth itself, these force of gravity keeps the others planets in the Solar Systeem in their porbits but mos of all prevents earth to fallin teh deep space.