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The Earth is made up of 8 layers which include the 

core, crust, mantle, lithosphere, asthenosphere, 

mesosphere, inner core, and outer core. While 

going to the center of the Earth we traveled 

through these layers and saw and experienced 

many things throughout the journey through these 

layers.

When the journey started we entered though Earths 

crust which is the thinnest of all of the layers. When 

we first entered this layer there was just rock and 

stone but as we got about 25 miles down because 

that's about the depth of the crust, we noticed that 

things started to get hot. Temperatures reached up to 

1600 degrees Fahrenheit and also we noticed that the 

material which consisted of mostly granite rocks was 

becoming more dense. The crust is the least dense of 

all of the layers because it consists mostly of granite 

rock. Since the crust is different lengths under the 

oceans and continents since we were under a 

continent the pressure was 2.7 g/cm^3, if we were to 

be under the ocean it would be 3.0 g/cm^3.

After leaving the crust we entered the 

lithosphere which is the next thinnest layer 

from the crust and is the upper most solid 

mantle. This layer was starting to get hot at 

1,000 degrees Celsius. It was getting more 

dense with ranges around 3.4 to 4.4 g/cc. The 

lithosphere was a hard layer to travel through 

because it was very rocky and hot, this is 

where the rocks cycle through. The pressure is 

quite similar to the crust but a little higher due 

to its depth.

After leaving the Lithosphere we definitely started 

noticing changes. Now the layers started to get thicker 

and the one we were in now was the asthenosphere. 

The asthenosphere consisted of rock but started to get 

more vicious towards the end of it. It was 50 to 124 

miles thick and temperatures reached up to 1300 

degrees Celsius. The density of the asthenosphere was 

4.4 to 5.6 g/cc which definitely a change from the 

lithosphere. The pressure is high in this layer so 

combined with the temperature rock starts to melt. 

Mostly this layer consisted of partially molten rock and 

tar. 

The next layer was the upper mantle which 

consisted of molten rock. This layer was also 

starting to show more thickness than the other 

layers so far. It was very hot and the 

temperatures were at 1,652 degrees 

Fahrenheit at the upper mantle near the crust. 

This layer consisted mostly of a silicate rocky 

shell that is a plastic consistency. The density 

of this layer was 3.3 g/cm3 which increases 

with depth of the mantle. The pressure also 

has a big change in this layer and is very high 

as it goes deeper.

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