► Scientists believe that about a hundred billion years ago the earth, the sun, and all the planets of the solar system were nothing only a cloud of cold dust particles through the empty space.► Little by little, these particles were attracted to each other and came together to form a huge spinning disk (a galaxy). As he turned, the disc in separate rings, and the movement made furious red-hot particles.► The centre of the disk became the sun, and the particles in the outer rings turned into large fiery balls of gas and molten-liquid. Then they began to cool and condense and take on solid form. And at last, some four or five billion years ago , they became Earth, Mars, Venus and the other planets.► The Earth has 4700-7500 millions years.► The planet Earth is the 3rd planet in the Solar System from Sun.► It has a satellite that is called ‘‘Moon’’. Favourite planet
MERCURY► Mercury is the planet of the solar system closest to the Sun and the smallest. It is part of the so-called rocky inner planets or satellites lacks.
VENUS► Venus is the second planet in order of distance from the Sun, and the third in terms of size, from smallest to largest. It is named in honor of Venus, the Roman goddess of love.
EARTH► The Earth is a planet in the solar system that revolves around its star in the third innermost orbit. It is the densest and fifth- largest of the eight planets in the Solar System. It is also the largest of the four terrestrial.
MARS► Mars is the fourth planet from the sun. Named for the god of war in Roman mythology Mars is sometimes nicknamed the Red Planet because of the reddish appearance that gives the dominating iron oxide surface.
JUPITER► Jupiter is the fifth planet from the Sun and the largest planet in the Solar System. It is a gas giant with mass one-thousandth that of the Sun but is two and a half times the mass of all the other planets in the Solar System combined.
SATURN► Saturn is the sixth planet from the sun, and the second largest after Jupiter mass and the only one with a ring system visible from Earth. Its name comes from the Roman god Saturn
URANUS► Uranus is the seventh planet of the Solar System, the third largest in terms of size, and the fourth most massive. His name is in honor of the Greek deity of the sky Uranus, the father of Cronus and grandfather of Zeus.
NEPTUNE► Neptune is the eighth planet from the Sun and the solar systems farthest. It is part of the so-called outer planets or gas giants, and is the first to be discovered through mathematical predictions.
► The movements: The Earth rotates eastward.► The rotation of the planet earth: Tour for 23 hours, 56 minutes and 4 seconds.► The trastation of the planet earth: There is 365 days (8760 hours)
The volcanoes are monticules of rock created by thecollision of the tectonic plaques and this monticules expulse magma that is the fire of the centre of the Earth.The common definition of matter is anything that has both mass andvolume (occupies space).For example,a car would be said to be made of matter, as itoccupies space, and has mass. The main matter are:-Metal-Water-Gassis