Concept explainers
The contribution of density segregation to Earth’s internal layers.
Answer to Problem 1RQ
The density segregation contributed to the formation of Earth’s internal layers. It is due to density segregation that the outermost layer is least dense, which is known as the crust, then is the second layer called the mantle and lastly, the inner densest layer is the metallic core.
Explanation of Solution
When the Earth was formed, the elements were evenly distributed over the planet. But after every meteorite effect, the heat was produced. Due to the Earth’s gravity, it attached more elements, which led to the pressing of Earth to a smaller volume. This process also generates heat. The decay of radioactive elements also produces heat.
All these processes took the Earth to its melting point. Now, in a molten state and due to gravity, the denser material was deposited at the center of Earth and less- dense on the surface.
Conclusion:
Therefore, the density segregation contributed to the formation of Earth’s internal layers. It is due to density segregation that the outermost layer is least dense, which is known as the crust, then is the second layer called the mantle and lastly, the inner densest layer is the metallic core.
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