Discuss the different theories put forth to explain origin of the Earth. Which theory is considered as the best possible model?

The origin of the Earth has been a subject of scientific curiosity for centuries, leading to the development of several theories. These theories aim to explain how the Earth, as we know it today, came into existence, considering both its physical and structural characteristics. 

1. Nebular Hypothesis (Condensation Theory): Proposed by Immanuel Kant and Pierre-Simon Laplace in the 18th century, the Nebular Hypothesis suggests that the solar system, including the Earth, originated from a large, rotating cloud of gas and dust, known as a nebula. As this nebula contracted due to gravitational forces, it began to spin faster, forming a flat, disk-like shape. In the center of this disk, the Sun formed, while the outer regions cooled and condensed to form planets, including Earth. The Earth initially existed as a molten mass, which eventually ___ __________ ________ _________ ________ ______ _______ _________.
___ __________ ________ ______ _______.
___ __________ _____ ____ ____ _________ ______.
_______ __________ _____ ______ _________ _______ ___ __________.
_______ ____ _____ ________ ________ _______ ___ ___ ____.
________ ________ ____ ________ ______ _________ __________.
________ ____ __________ __________ _______ ________ _____ ____ __________ ___.
__________ ___ ________ _________ ____ ____ _______.
_____ __________ ______ ___ _____ _______ _________ __________.
___ _________ ___ _______ _________ __________ ____ _____ ____ ________ _______ ________.
________ ______ _________ __________ _______ ________ __________ __________ ___.
______ _____ _________ _________ ___ _______ _________ _____ _____ _______.
_____ ________ ________ _____ ______ _____ _____ ___ ___ ____ __________ ___.
_____ _______ _____ ____ __________.
___ ______ ____ ______ _______ _________ ____ _____ ____ ____ _______.
_____ _______ ___ ___ ______ ___ _____.
________ ________ ________ _____ ______.
_____ ____ _________ ______ ________.
_____ _____ ____ _________ _______ ____ _____ _________.
______ ________ _____ ___ _______ _________ ___.
_____ __________ ______ ___ __________ ______ __________ _________.
_________ _____ ________ __________ _________ ___ _______ ________ ______ _______ _______.
______ ______ ____ ____ ___ _________ _______ ________ ____ _______ _______.
______ ____ __________ _____ _____ ____ _____ __________ ______.
_______ ________ ___ ________ _____.
_________ ________ ___ _____ ______ _______ __________.
____ _________ ______ _________ ________ ___ _________ __________ ____ _____ ______ _____.
______ ________ _____ _______ ___ ______ ____ __________ _____ _________ ___ _______.
_____ __________ ________ _________ _____ ________ _____ ___ ______ ____ __________.
_____ _____ _______ __________ ________ ________ _______ _______ ___ ________ ________.
____ ________ _________ ___ __________ ______ ________ _________ ______ _______.
__________ _________ _______ _________ __________ ______ ___ _______ _______.
________ ______ ___ ____ ________.
________ _________ ___ ___ _____.
______ _______ _______ _________ ______.
__________ ____ _____ ______ __________ ___ _____.
________ _________ __________ _____ ___ _____ _____ ________ ____ ______.
____ ___ ________ ___ ________ _________ ____ ________ _______ _____.
_____ ______ ___ ___ _____ _____.
_____ ______ ____ ______ ___ ____.
_________ __________ __________ ___ _______ _______ _____ _________ ____ _______ ______.
______ ________ __________ ___ _______ __________ _________ __________.
__________ _____ ___ _____ ___ ____ _________ ________ ______.
__________ ____ ____ _____ _________ __________.
________ __________ ________ _______ ________.
_______ ________ _________ _________ _______ _______ _________ ________.
_____ _______ __________ __________ __________ _____ ____ ______ _____ _________ ___ _________.
_________ __________ ______ _________ ______ _________ ___ ___.
_____ _________ _____ ___ ________ _____ _______ _______ ____ ____ ____ _____.
________ _________ _________ ___ _________ ____ _________ ______ _________.
_________ ___ _____ __________ __________ ____ ________ _____.
_______ __________ ________ ______ ___ ___ ____ _____ ______ _______.
___ ______ _______ ___ ______.
________ _________ ____ ____ ___.
____ ____ __________ __________ ____ ____ ________ _____ __________.
_____ _______ _________ _____ _______ ________ __________ ________ _____ ___.
_________ __________ __________ ____ __________ ____ _________.
_____ ______ ______ _____ _________ __________ ______ ___ _______ ____ __________ ____.
____ _________ ___ _______ ___ ____ _____ ______ ___ _______.
________ ___ __________ ______ _________ ______ _____ ____ __________.
___ _____ ______ _____ _______ _________ ______.
_____ __________ _______ _______ ___ __________ _________ ________ ______ ________.
___ ____ ______ _________ __________ ___.
______ ___ _____ _____ ______ ___ _______ _______ ______ _________ __________.
____ ________ _____ ________ ______.
____ ________ __________ ____ _________.
________ ____ ________ ________ ___ ___ ____.
_________ ___ _______ ______ __________ ___ _____ _____ ________.
_________ _________ _____ __________ _______ ___ ____ ___ __________ _____ ___.
__________ ____ ________ _________ _________ _______ _________ ___ _______ _______ ________ _________.
_______ ______ ___ ___ _________ ______.
________ ____ __________ _____ ____ ___ ___ ______ ___ _______ ______.
___ ____ _________ __________ _____ _________ _________ _______ ______.
_______ _______ ___ _____ _______ ______.
________ ________ _____ ______ _________ ______ _____ _________ ________ ________ ___.
___ _______ _______ ________ ____ _____ _______ _______ ______.
_________ ________ __________ _____ ______ ____ ___.
______ _____ _____ ____ ___ _____ _______ _______ ________ ____ ____ ___.
____ ____ __________ ___ ______ ___ ______ ________.
____ ______ ____ _______ __________ _______ _________ ____.
__________ ______.
Get Full Answer on WhatsApp