Which Layer of the Earth Touches the Atmosphere?

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The layer of the earth that touches the atmosphere is one of the highest most layers. Find out which layer of the Earth touches the atmosphere with help from an experienced educator in this free video clip.

Part of the Video Series: Planets, Stars & More
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Video Transcript

Hi my name is Eylene Pirez. I'm an astrophysicist and this is what is the Earth's layer that touches the atmosphere. So when you look at the internal structure of the Earth and this is sort of a slice of the Earth, here you have the core and it's made out of mostly iron and nickel and we're talking about something that is 6,000 kilometers, over 6,000 deep, it's actually 6,800. This part is actually solid and then the envelope is liquid and, as I said, it's made out of iron and nickel so very dense, very heavy and then we have the mantle and then after that we have the atmosphere and then over the atmosphere we have the crust, and the crust is the important part here, and it's between 0 to 100 kilometers thick. So it's very thin and this is where we have the mountains, trees, whatever and this is what actually, this is the external layer of Earth and this is the one that touches the atmosphere. The atmosphere is over here and obviously the sun will be way outside. So here is the atmosphere. So the layer that touches the atmosphere is the crust. My name is Eylene Pirez. I'm an astrophysicist and this is what layer of the Earth touches the atmosphere.

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