What On Earth: Crash Course Kids #10.1 - By Crash Course Kids
Transcript
| 00:09 | you know , some things just make sense together like | |
| 00:12 | peanut butter and jelly , or burgers and fries or | |
| 00:15 | water and dirt . Okay , let me explain that | |
| 00:18 | last one . So we've already talked about how the | |
| 00:21 | earth is divided into four spheres . That's the hydro | |
| 00:24 | sphere , the geo sphere , the biosphere and the | |
| 00:26 | atmosphere . Well today I want to focus on just | |
| 00:28 | the first two of these spheres , the hydro sphere | |
| 00:31 | , which includes all the water on the planet , | |
| 00:33 | and the geo sphere , which is simply the solid | |
| 00:36 | earth . The hydro sphere and the geo sphere are | |
| 00:37 | both equally important and different spheres of our planet . | |
| 00:40 | But do they interact with each other ? And if | |
| 00:43 | so , how ? Well , let's have a little | |
| 00:49 | refresher on what exactly both of these spheres are separately | |
| 00:51 | . Before we figure out how they interact together , | |
| 00:54 | you'll remember that Geo means ground . So what we | |
| 00:56 | call the geo sphere includes all the rocks , minerals | |
| 00:59 | , and ground found on and inside the earth . | |
| 01:01 | This means every single pebble in the mountains , every | |
| 01:03 | grain of sand in the desert , the entire ocean | |
| 01:06 | floor and even the continents we live on our part | |
| 01:09 | of the geo sphere . If it looks like solid | |
| 01:11 | ground , it's part of the geo sphere . The | |
| 01:12 | geo sphere includes the surface of the earth which we're | |
| 01:15 | on now , but it even extends down to the | |
| 01:17 | planet's core below us now the hydro sphere is also | |
| 01:20 | found on the earth's surface and just below it too | |
| 01:23 | . But the hydro sphere also extends up into the | |
| 01:25 | atmosphere . Hydro means water . So the hydro spheres | |
| 01:28 | made of all the water on earth , and I | |
| 01:30 | do mean all of the water like ponds , rivers | |
| 01:34 | , lakes , streams , oceans , glaciers on the | |
| 01:36 | earth's surface , but also the moisture in the air | |
| 01:39 | , like rain , hail and snow , that's all | |
| 01:42 | part of the hydro sphere too . So the geo | |
| 01:43 | sphere and the hydro sphere are separate systems . But | |
| 01:46 | if we think of Earth as one giant system or | |
| 01:48 | a group of systems working nicely together , then the | |
| 01:51 | geo sphere and the hydro sphere are two parts that | |
| 01:53 | work together to support life like you and me on | |
| 01:56 | the planet . How do these two spheres work together | |
| 01:58 | though ? Let's take a look at a model to | |
| 02:00 | find out mm . Since the geo spheres the ground | |
| 02:06 | . Let's start by laying down some of that and | |
| 02:08 | let's throw in some mountains to now , we'll need | |
| 02:10 | some water . Let's have a river winding through the | |
| 02:12 | land about here . How about a lake ? And | |
| 02:15 | just for the heck of it , let's throw some | |
| 02:16 | rain over here . Okay , so you can see | |
| 02:18 | in this model some elements of the geo sphere , | |
| 02:20 | right , That would be the ground in the mountains | |
| 02:23 | . You can also see elements of the hydro sphere | |
| 02:25 | , say hi to the river lake and raindrops . | |
| 02:27 | But so what both spheres are there , but they're | |
| 02:31 | not really doing anything together . Right , wrong . | |
| 02:34 | Look closer , see that riverbed under the river . | |
| 02:36 | Help at the bottom of the lake . Those things | |
| 02:38 | are part of the geo sphere , their parts of | |
| 02:40 | the geo sphere that are supporting and surrounding parts of | |
| 02:43 | the hydro sphere and check out the rain over the | |
| 02:45 | mountains . The rain , which is part of the | |
| 02:47 | hydro sphere , is falling on and running down the | |
| 02:49 | mountains , which is part of the geo sphere . | |
| 02:51 | And this is just a really small example of the | |
| 02:53 | two spheres interacting every day . All over the earth | |
| 02:56 | . Water is moving over land forms from waterfalls flowing | |
| 02:59 | down mountains to ocean waves crashing on sandy shores . | |
| 03:02 | Water rest in lake beds or ocean floors in river | |
| 03:05 | valleys and even in the soil in your backyard , | |
| 03:08 | all of which are part of the geo sphere . | |
| 03:10 | So on a basic level , the geo sphere really | |
| 03:12 | provides a home for the hydro sphere , which I | |
| 03:15 | think it's kind of sweet , but that's just me | |
| 03:19 | . Yeah , so now , you know a little | |
| 03:22 | bit about how the geo sphere and the hydro sphere | |
| 03:25 | are connected to find out how they can actually affect | |
| 03:28 | and even change each other . Check out our next | |
| 03:30 | episode . |
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What On Earth: Crash Course Kids #10.1 is a free educational video by Crash Course Kids.
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