UNIVERSE
PLANETARY INTERIORS
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Question
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Earth’s layers formed as result of differentiation . During differentiation, different zones of elements form layers and today we know these layers are made up of different elements. Certain elements sunk to the center while others collected near the surface. We might predict that the ____ elements, like iron and nickel, formed the core.
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first crystallized
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more dense
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least dense
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light weight
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Explanation:
Detailed explanation-1: -The Four Layers Many geologists believe that as the Earth cooled the heavier, denser materials sank to the center and the lighter materials rose to the top. Because of this, the crust is made of the lightest materials (rock-basalts and granites) and the core consists of heavy metals (nickel and iron).
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