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  • you live on earth, a huge mass traveling through space.

  • There's orbits the sun, but what is the layer of earth you are on right now?

  • Called on?

  • Do you know what all the layers that form our planets are called Earth has distinctive layers within it.

  • Let's start with the outermost and finished layer the crust.

  • There are two parts to the crust, one being the oceanic crust, which the ocean sits on and is around 5 to 8 kilometers deep.

  • It is mainly made of vassals, which is a type of igneous, or volcanic rock.

  • The other part is the continental crust, which is what we live on.

  • This varies from around eight kilometres to 70 kilometers and is largely made of another igneous rock called granite.

  • The next layer is the mantle, mainly composed of silica, rock and minerals.

  • The mantle is about 2900 kilometers thick, which makes it the thickest layer of earth, also making up 85% of the earth's total weight.

  • Thistle again can be split into two distinct layers.

  • The upper and lower mantle.

  • The outer part of the upper mantle is like the crust, but much cooler and rigid.

  • The crust and outer upper mantle together is called the litmus fear.

  • Litmus.

  • Fear is broken into large pieces, which make up Earth's tectonic plates, Thes plates says on the inner part of the upper mantle called ts Tennis fear.

  • The rock hair is softer and partially molten as temperatures rise to 3000 degrees Celsius.

  • The lower mantle is just as hot as the upper, the rocks being hot enough to melt but remains solid due to the pressure being pushed down on it.

  • The lower mantle is slowly moving due to conviction currents, which is when deeper, hotter material rises, then cools and sinks again.

  • This is what is thought to move the Earth's tectonic plates, shaping Earth's continents as we know them.

  • Today, theater core is the layers surrounding the inner core.

  • It is approximately 2400 kilometers thick, mostly made up of liquid iron and nickel at a temperature between 4000 to 6000 degrees Celsius.

  • The flow of the liquid here is what creates Earth's magnetic field.

  • The inner core is the hottest part of the earth, with temperatures between 5000 to 6000 degrees Celsius.

  • That is as hot as the surface of the sun.

  • It is roughly 1400 kilometers thick and is also primarily iron and nickel.

  • The air pressure here is three million times that of sea level, which causes the court to become solid metal.

  • The deepest humans have ever explored is the Kola Super Deep Borehole, which was a Soviet Union scientific drilling project between 1970 1994.

  • The drilled A men nine inch wide hole 12 kilometers deep into the earth.

  • One of the most exciting findings was that of microscopic fossils found in rocks nearly seven kilometers deep that were two billion years old.

  • Very little research is being done about the layers below our feet.

  • Just imagine what else might be down there.

  • We would love to know your thoughts on this subject, and the video is a whole.

  • So please leave a comment below.

  • If you enjoyed this video, please hit like and subscribe.

you live on earth, a huge mass traveling through space.

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B2 中高級

地球的層次。我們下面是什麼? (Layers of the Earth. What is beneath us?)

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    林宜悉 發佈於 2021 年 01 月 14 日
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