Here Comes the Sun: Crash Course Kids #5.1 - By Crash Course Kids
Transcript
| 00:09 | pop quiz . What's the closest star to earth it's | |
| 00:13 | called ? Soul . Never heard of it , you | |
| 00:15 | say ? Sure you have , Soul is the Sun | |
| 00:18 | . Ancient romans who once worshipped the Sun called its | |
| 00:21 | Soul and its become the kind of official scientific name | |
| 00:24 | for the sun . It's where the term solar system | |
| 00:27 | comes from . Seoul or the sun is the star | |
| 00:30 | at the center of our eight planet solar system that | |
| 00:33 | provides us with energy without the sun , Earth would | |
| 00:36 | be a dark frozen world with no life . But | |
| 00:39 | how does the Sun's energy get to us ? Well | |
| 00:46 | first , let's talk about what the sun is . | |
| 00:49 | It's a five billion year old big ball of superhot | |
| 00:52 | gas . The hottest part of the sun is its | |
| 00:55 | core or center , which is about 15 million degrees | |
| 01:00 | Celsius . So its surface is not quite as hot | |
| 01:03 | , but it's still almost 5600 degrees Celsius , which | |
| 01:08 | is pretty toasty if you ask me . And as | |
| 01:10 | for its size , the sun is so huge you | |
| 01:13 | can line up over 100 earths along the face of | |
| 01:16 | it and more than a million earths could fit inside | |
| 01:20 | it . But the sun sizes and what makes it | |
| 01:21 | seem so big and bright to us on earth . | |
| 01:24 | It's because it's so close to us that it seems | |
| 01:26 | way , way , way , way bigger and brighter | |
| 01:29 | than other stars . So , you know that the | |
| 01:31 | sun is hot and bright and that heat and light | |
| 01:34 | are both kinds of energy that we get from the | |
| 01:36 | sun . Let's take a look at a model to | |
| 01:38 | see how the sun's energy gets from good old soul | |
| 01:41 | to our planet . Mm Here's the sun . Energy | |
| 01:47 | is created in it's super hot , 15 million degree | |
| 01:51 | core . That energy then travels outward from the core | |
| 01:54 | to the surface of the sun . But this journey | |
| 01:56 | from the center of the sun to its surface can | |
| 01:59 | take over 100,000 years to complete . But once the | |
| 02:04 | energy deep inside the sun finally gets to the surface | |
| 02:07 | , it travels as light and heat all the way | |
| 02:10 | to Earth . In fact , it only takes about | |
| 02:12 | eight minutes for light to travel approximately 150 million kilometers | |
| 02:17 | through space to Earth over here . That's not such | |
| 02:21 | a long time . Yeah , so to sum up | |
| 02:27 | , energy is created in the sun's core . It | |
| 02:29 | travels very slowly to the sun's surface before it takes | |
| 02:33 | a super speedy trip to Earth in the form of | |
| 02:35 | light and heat . And you and I can see | |
| 02:38 | and feel that energy as sunlight without the heat and | |
| 02:41 | light we get from the sun , Earth would be | |
| 02:43 | just a frozen ball floating around in space , which | |
| 02:46 | would be a total bummer . So thanks . So | |
| 02:50 | you're a real star . |
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Here Comes the Sun: Crash Course Kids #5.1 is a free educational video by Crash Course Kids.
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