Layers of Earth

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14 Terms

1
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What is the layer of earth that is most near the surface?

Crust ( Continental and Oceanical)

2
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What’s the 2nd layer of earth that is most near the surface?

Mantle (Upper and Lower)

3
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What is the 3rd layer of earth that is the nearest to the surface?

Core (Inner and Outer)

4
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What is the thinnest layer of earth?

Crust

5
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What is the thickest layer of earth?

Mantle

6
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What’s the hottest layer of earth

Core (Inner)

7
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What’s the composition of the crust?

Mainly oxygen and sillicon.

8
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What’s the composition of the upper mantle?

mainly: silicon, oxygen, magnesium, and iron

9
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What’s the composition of the lower mantle?

mainly lerropericase and silicate perovskite, two minerals containing iron, magnesium, and silicates

10
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What’s the composition of the outer core?

Mainly liquid Iron and nickel.

11
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What’s the composition of the inner core.

Solid iron and nickel.

12
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The name of the physical layer of the crust and a part of the lower mantle is called:

Lithosphere

13
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The name of the physical layer of a part of the upper mantle is called:

Asthenosphere

14
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The name of the physical layer of the lower mantle is called:

Mesosphere