Name: 地球の構造｜双眼鏡博士のショー｜子供のための教育ビデオ (Structure Of The Earth | The Dr. Binocs Show | Educational Videos For Kids)
Uploaded: 2021-01-14T06:41:56.000Z
Duration: 3 min 13 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

Just like this pizza, the earth too has  a crust, but with no cheese in it.

So let's learn something about the  structure of the earth today.

It consists of the Crust, Mantle and Core!

It consists of all kinds of rocks, soil and  everything you see above the earth's surface!

You will be surprised to know that the crust, that is the land on which we walk

is almost three times thicker than  the crust under the oceans.

The earth's crust floats on this layer which is called the Mantle.

It is made of thick, solid, rocky substance

and amounts to about 85%  of the total mass of earth.

The first 50 miles of the mantle  consist of very hard, rigid rocks.

The next 150 miles are made up of super-hot solid rocks.

Below that for the next several hundred miles,

the earth's mantle is believed to be made up  of very solid and sturdy rock materials.

The mantle is about 1800 miles thick and by far the largest layer of earth.

The earth's outer core is made up of super-hot  liquid molten substance called Lava.

This lava is believed to be made of iron and nickel.

It extends to a depth of 3000 miles  beneath the earth's surface.

And finally, we have reached earth's inner core.

The inner core extends another 900 miles  towards the center of the earth.

It is believed that this inner core is a  solid ball made of iron and nickel.

The crust occupies less than  1% of earth's volume.

The inner core is the hottest  part of the earth

and it is as hot as the surface of the sun.

Looks like it's time for me to Zoooom out!