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1º ESO/TECTONIC PLATES - Contenido educativo

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Subido el 7 de marzo de 2021 por Alicia M.

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Oh, don't worry. It was just a dream. 00:00:21
You just dream about earthquakes and mountains. 00:00:38
Do you want to know how mountains are formed and earthquakes happen? 00:00:41
Okay. Do you have a jigsaw puzzle? 00:00:44
Okay. Bring that jigsaw puzzle and start solving it. 00:00:47
Hello. What are you doing? 00:00:51
Ah, you're making a jigsaw puzzle. I love those. 00:00:53
Wow. That's amazing. 00:00:57
You can put the whole puzzle together. 00:00:59
No wonder you're so happy. 00:01:00
Do you know that our Earth is really like a jigsaw puzzle? 00:01:02
Well, it is. Would you like to know more about it? 00:01:07
The Earth we see is like this globe, round like a ball and full of land and water. 00:01:10
But beneath all this land and ocean, there's a big, hidden jigsaw puzzle. 00:01:16
Did you know that the inside of the Earth is made of hot molten rock called mantle? 00:01:21
The crust we live on floats on top of this mantle. 00:01:25
However, Earth's crust is not a single continuous solid land. 00:01:29
In fact, it is broken in many pieces, like a jigsaw puzzle. 00:01:34
These parts of the Earth's crust are called tectonic plates. 00:01:38
Oh, I didn't mean dinner plates. 00:01:44
Tectonic plates are huge, huge pieces of Earth on which the continents and oceans are made. 00:01:48
Very good. It's quite like that. 00:01:56
Remember, the jigsaw pieces that make up the Earth's crust are called tectonic plates. 00:01:58
These plates keep floating, but not on water. 00:02:04
They float on the hot, molten inner layers of the Earth. 00:02:07
Oh, we're not going anywhere soon, my friend. 00:02:11
The tectonic plates move, but very slowly. 00:02:13
Their speed is way slower than the growth of your fingernails. 00:02:16
Ouch! 00:02:21
Oh, don't be so sad. 00:02:22
Even though tectonic plates move very slowly, 00:02:24
This slow movement creates the world as we know it. 00:02:27
It can also sometimes cause a lot of havoc and problems. 00:02:30
Don't believe me? 00:02:34
The whole landscape around us is a result of the movement of tectonic plates. 00:02:35
This movement can cause earthquakes, volcanoes, mountains, and trenches. 00:02:39
Let me explain in detail. 00:02:44
Land features such as mountain formations and events such as earthquakes 00:02:50
happen due to the continuous movement of the tectonic plates. 00:02:53
As these plates keep moving around the Earth's surface, they shape our world. 00:02:57
As the tectonic plates move, they collide with each other. 00:03:02
The plates can collide in many ways. 00:03:06
Sometimes, when two tectonic plates move towards each other, one of them is forced downwards. 00:03:09
This is called subduction. 00:03:15
Yet sometimes when they push against each other, they are both crumpled. 00:03:17
This is called uplift. 00:03:21
You'll be surprised to learn that this is how the Himalayas were formed. 00:03:23
So you see, the slow movement of tectonic plates can create something as huge as Mount Everest. 00:03:27
This movement also creates one of the biggest natural disasters of the world. 00:03:34
At times, the tectonic plates collide sideways. 00:03:41
This is called the transform movement. 00:03:45
Whoa! We were in an earthquake just now! 00:03:51
You did the right thing by running out of your home into the open. 00:03:54
It's safer to be outdoors during an earthquake. 00:03:56
Do you want to know why earthquakes happen? 00:03:59
First tell me, how do tectonic plates collide with each other? 00:04:02
Correct. Now, sometimes the plates get locked together while moving. 00:04:09
Naturally, this happens at the plate boundaries, where two different tectonic plates meet. 00:04:13
These boundaries are called fault lines. 00:04:19
As the plates try to move, a lot of friction and stress builds up. 00:04:21
Eventually, when the blockage gives way, this stored energy is released. 00:04:25
The point beneath the Earth's surface where it is all stored is called the hypocenter. 00:04:29
When the released energy reaches the surface, we feel the Earth shaking. 00:04:34
This is an earthquake. 00:04:38
The point on the surface which is directly above the hypocenter is known as the epicenter. 00:04:40
An earthquake is strongest at the epicenter. 00:04:45
Well, you learned a lot about our Earth today. 00:04:48
Do you remember it? 00:04:51
You remember what tectonic plates are, right? 00:04:52
Oh, well. 00:04:55
Do you remember what we learned about the mountains? 00:04:56
And what did you understand about the earthquakes? 00:04:58
Well, at least now you know the connection between tectonic plates, mountains, and earthquakes. 00:05:02
Or maybe not. 00:05:07
Subido por:
Alicia M.
Licencia:
Dominio público
Visualizaciones:
82
Fecha:
7 de marzo de 2021 - 19:05
Visibilidad:
Público
Centro:
IES LA SENDA
Duración:
05′ 09″
Relación de aspecto:
1.78:1
Resolución:
1280x720 píxeles
Tamaño:
44.35 MBytes

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