About Lesson
B.3. Evolution Of Earth
During its primordial stage, the Earth existed in a highly volatile and unstable state. As the planet’s density gradually increased, so did the internal temperature. This rise in temperature triggered a crucial process known as differentiation, through which the Earth’s interior began to separate based on the density of its materials. Heavier elements sank toward the center, forming the core, while lighter materials moved outward, forming the mantle and crust. This process ultimately led to the creation of the Earth’s layered structure, consisting of the crust, mantle, and core as we know it today.