Question

What are some of the differences and similarities among the layers of the Earth?

Answer 1

Answer:

The crust, the outermost layer, is rigid and very thin compared with the other two. ... Like the shell of an egg, the Earth's crust is brittle and can break. Below the crust is the mantle, a dense, hot layer of semi-solid rock approximately 2,900 km thick.

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Answer 2

Answer:

The earth’s crust is the outmost and first layer of the earth. It is the hardened part of the Earth with a depth of about 5 to 70 kilometers (~ 3 to 44 miles) and makes about less than 1% of the entire Earth’s volume. The earth crust is split up into two parts: the oceanic crust and the continental crust.

The mantle sits on top of the outer core and is the second layer of the Earth. It is by a considerable margin the densest layer of the earth, approximately 2900 kilometers deep (1800 miles). For this reason, its volume is about 84% of the earth.

The Earth’s core is the innermost section of all the layers. It is distinctly made up of two parts which are the outer core and the inner core. Both the outer and the inner core are mostly made up of iron, nickel and other heavy metals as conjured by geologists. The major difference is that the materials of the outer core are liquid while the materials in the inner core are in solid state.

The outer core liquid and is conceived to be composed of about 80% of iron together with nickel. The outer core is liquid because it is not under enough pressure despite the fact that it has the same composition to that of the inner core. It is the layer that follows immediately after the mantle and has very high temperatures, up to about 4400 degrees Celsius.

The inner core is solid and the second thinnest layer of all the different layers of the earth. It is also the farthest from the earth’s surface. It is solid due to the pressure from the layers around it that put weight on it. Similar to the outer core, the inner core is mainly made up of iron and nickel and has an approximate thickness of between 5159 and 6378 kilometers (3200 and 3960 miles).

Explanation: