how is earth formed. give full explanation atleast in 200 words
Answers
Answer:
Although planets surround stars in the galaxy, how they form remains a subject of debate. Despite the wealth of worlds in our own solar system, scientists still aren't certain how planets are built. Currently, two theories are duking it out for the role of champion.
The first and most widely accepted theory, core accretion, works well with the formation of the terrestrial planets like Earth but has problems with giant planets. The second, the disk instability method, may account for the creation of these giant planets.
Scientists are continuing to study planets in and out of the solar system in an effort to better understand which of these methods is most accurate.
Answer:
After the sun formed, due to gravitational force some gases ,rocks gathered and formed a spherical shape which was burnt ,it is the earth .At first the earth was like all the planets i.e.,lava as like as a hell .At first it's rotation was very fast such that a day was only 6 Hours. A planet like mars lost its orbit and crashed the earth aside, by this a part of earth are ramified and are separated. These small particles are gathered and formed as moon. when the moon was separated from the earth, the distance between moon and earth was only 22,000 km.
And every year the moon goes 4 cm away from the earth .And now the distance between the earth and the moon is 3,84,500 km. There is a chance that,after some crores of years the moon will cross it's orbit and revolute around the sun as a planet. The shape of the earth was decreased 28.5° when it was in collision by the planet. Because of that now we have seasons. At that time the temperature of earth was 1000° C. But the temperature of the space was -270°. When the lava was cooled it became hard. After it became hard ,some of the meteors crashed the earth in which they contained water and ice particles. Thus,the earth had water . This water was evaporated by the temperature of the earth and fell as rains and stayed in the atmosphere as clouds .
This is how the earth formed.