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Sound

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Subido el 26 de abril de 2020 por Luis Miguel I.

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So we got sound. This unit is called sound. Let it hit. Yesterday you started coloring your first page in the notebook and with the vocabulary, right? Okay. Now, sound. We start with sound today. 00:00:05
when an object vibrates it produces sound waves these waves travel through a solid medium liquid 00:00:22
or gas to our ears so we can hear so sound is produced when an object vibrates like for 00:00:32
example our throat is vibrating so it produces sound waves now big vibrations amount to loud 00:00:39
sounds. However, small vibrations are equivalent to quiet sounds. Sound waves 00:00:52
can travel through a vacuum. What is a vacuum? El vacío, un vacío. Okay, if 00:01:02
there's no air, no liquid, no gas, sounds can travel. For example, space is a giant 00:01:10
empty vacuum with no air and here you got the picture of these astronauts here 00:01:17
is it and I can't hear you and you did something similar in your book I think 00:01:24
but astronauts can hear themselves through the space now important sound 00:01:28
moves four times faster through the water than through the air okay here you 00:01:37
got a representation of how sound can travel in those waves. Look at the 00:01:44
dolphins and they can communicate with each other and some animals that live in 00:01:52
the sea. Well to finish let's sign up with this small activity. It's very easy 00:01:57
you'll see. When an object vibrates it produces sound waves. These waves travel 00:02:04
through what is solid liquid gas through a medium to our ears so we can hear them. 00:02:12
We perceive large vibrations, remember large vibrations, as loud sounds. However 00:02:19
small vibrations we perceive it as quiet sounds. Good. Sound waves can only travel 00:02:26
through a medium such as air. They cannot travel through this word that we learned 00:02:34
today vacuum very good and what is a giant empty vacuum with no air with 00:02:41
example I gave you space that's it very good well so this is sound please if you 00:02:48
have any question ask me don't forget but well also we got jet-sea tomorrow so 00:02:56
you can ask me anything you want all right goodbye 00:03:02
Autor/es:
Luis Miguel Isidro Navarro
Subido por:
Luis Miguel I.
Licencia:
Reconocimiento - No comercial - Compartir igual
Visualizaciones:
146
Fecha:
26 de abril de 2020 - 11:52
Visibilidad:
Público
Duración:
03′ 07″
Relación de aspecto:
1.78:1
Resolución:
1920x1080 píxeles
Tamaño:
83.01 MBytes

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