 Out in the ocean there's a giant iceberg sitting out here big thing threatening the oil platforms floating around and in the Bottom of this very special iceberg there is a really strange looking googly-eyed space alien And you have been given the task to go out there in your little boat Sitting here in the water and to get the space alien out now You're a good geosciences 10 student and you know that all icebergs have about one tenth above the surface And they have about nine tenths below the surface So you know immediately what to do you take your jimungus chainsaw and you chainsaw off the top of the iceberg and Throw it away because you know what this will cause is that the iceberg will come bobbing up Carrying the space alien with it and so after it gets done bouncing up and down for a little bit You find that the iceberg is almost as tall as it was before It still has sitting way down in the bottom of it the space alien that you're trying to get to so there's a space alien down here And it still has about one tenth of its height above the surface and about nine tenths of its height Below the surface, but what you find is it's just a little bit shorter than it was and it doesn't stick down quite as far as Did now you want the top off again And you keep lumping the top off and you keep lumping the top off and after a long time you get down to a little Iceberg that doesn't stick very far down now It still is the same picture that it has one tenth above and it has nine tenths below And if you're not careful you're sitting there admiring this lovely fact of science and the space alien sticks out a Giant tentacle and it grabs your ship and throws it to the bottom of the sea and so you better not do that however There is a scientific piece to this suppose instead of space aliens that we wanted to talk about Mountain ranges now we know that mountain ranges stick up above the planes But you might not have known that they also stick down They have a route in the same way that an iceberg has a route that it's sitting on There's a slight different that's in that about one Seventh of a mountain range is up and about six sevenths of a mountain range is down Way down the rocks have been heated. They've been squeezed There's all sorts of interesting things going on and new minerals being grown and at the surface The streams are sitting here busily trying to grind away the mountain range as the streams grind away the mountain range Why the deep stuff will come bobbing up towards the surface and if you come much later and look at it You'll find that the the rocks have barely any mountains left There's still a little bit of root with the one seventh up and six sevenths down But now what you'll find is that the rocks that had been cooked way down and bent way down are very near the Surface and you can go see them