Concept explainers
A teacher would like to demonstrate the behavior of continental and oceanic crust floating in the mantle by using wood blocks and a pan of water. What density of wood is required to model how the continental crust floats in the mantle? What density of wood is required to model the oceanic crust?
The density of wood required to model the continental crust and oceanic crust floating in mantle.
Answer to Problem 8PEB
Solution:
Explanation of Solution
Given Data:
The density of continental crust is
The density of mantle is
The density of oceanic crust is
The density of water is
Formulae used:
Density of the wood required to represent the continental crust.
Here,
Density of the wood required to represent the ocean crust.
Here,
Explanation:
The expression of density of the wood required to represent the continental crust is:
Substituting
Hence, for modeling of the continental crust in the mantle, the density of wood required is
The density of the wood required to represent the ocean crust is:
Substituting
Hence for the modeling of the continental crust in mantle the density of wood required is
Conclusion:
The continental crust and oceanic crust floating in mantle can be represented by density of wood
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