Name: Layers of the Earth. What is beneath us?
Uploaded: 2020-04-23T19:51:52.000Z
Duration: 3 min 28 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

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?

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 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.

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.

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