Why Does The Earth Have Layers?
or why we live on an onion made of magma Subscribe to It's Okay To Be Smart: http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/jtotheizzoe...
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[MUSIC]Hey! I’m just making a planet. Well, this is how planets like Earth get their structure,anyway. Because of different layers of density!Even today, with all of our modern technology, we’ve only been able to drill about a thirdof the way through Earth’s crust, so how do we really know if it’s solid, liquid,hollow? Luckily, Earth has this tendency to violently shake and occasionally burp up someof its insides, and that’s taught us a lot about our planet’s guts without having togo down there.We’re used to seeing density at work.That’s the same reason that the atmosphere, the least dense part of our planet is on theoutside, and the crust, the second least dense part of Earth, is beneath our feet.Because I’m less dense than the dirt, I don’t sink into ...
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[MUSIC]Hey! I’m just making a planet. Well, this is how planets like Earth get their structure,anyway. Because of different layers of density!Even today, with all of our modern technology, we’ve only been able to drill about a thirdof the way through Earth’s crust, so how do we really know if it’s solid, liquid,hollow? Luckily, Earth has this tendency to violently shake and occasionally burp up someof its insides, and that’s taught us a lot about our planet’s guts without having togo down there.We’re used to seeing density at work.That’s the same reason that the atmosphere, the least dense part of our planet is on theoutside, and the crust, the second least dense part of Earth, is beneath our feet.Because I’m less dense than the dirt, I don’t sink into ...
