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Unit 5. Revolution - Contenido educativo

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Subido el 28 de abril de 2021 por Virginia M.

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Good morning, my students. So for science today, we are going to do social science, you know, the purple book, page 7071. So please open your book at page 7071. We are going to learn what is revolution. 00:00:00
So, revolution is the movement of the planets, in this case the Earth, around the Sun. Remember, the Sun is in the middle of the solar system and it doesn't move. Are the planets human? 00:00:19
okay so the earth takes this way we call this orbit okay it has another set it's not a circle 00:00:32
it's an ellipse safe okay and it takes 365 days that's one year okay 00:00:46
Okay, here you can see the movement the Earth takes to make a revolution. Okay, a revolution is a complete orbit and it takes 365 days, one year. 00:00:58
So, who moves? The sun or the earth? That's what you need to know to do number 1. 00:01:27
So now, circle the things that move. Does the sun move? Does the planet move? Does the other planet move? 00:01:45
So, which one of them move? 00:01:55
Now, in the number 2, it's very easy. 00:02:00
throw, you already know what is throw, the earth moving around the sun, so you have to 00:02:02
throw the sun, throw the earth, moving around, very easy, right? 00:02:09
But before, we are going to see, to watch a video, because the revolution is the reason 00:02:16
for the four seasons, okay, the revolution caused the four seasons, when the earth is 00:02:24
near the sun, it's warm, so it's summer. 00:02:30
When the Earth is far from the sun, it's cold, 00:02:34
but it's not that easy, okay? 00:02:37
We are going to watch a video about this. 00:02:39
As the Earth is both rotating and revolving, 00:02:46
it's not sitting straight up and down. 00:02:48
Its axis is actually tilted just a little. 00:02:51
It's not all that much, but this tilt causes one part 00:02:53
of the Earth to lean towards the sun, 00:02:56
while another part of it is leaning away. 00:02:57
This means that different parts of our planet's surface 00:02:59
gets different amounts of sunlight and heat. 00:03:02
So, why am I telling you all of this? 00:03:04
Well, as the Earth travels around the sun, 00:03:06
it creates a pattern throughout the year. 00:03:08
This pattern happens over and over again, 00:03:10
and I'm sure you've noticed it. 00:03:13
At certain times of the year, 00:03:14
you see the northern hemisphere leans towards the sun, 00:03:15
and the southern hemisphere leans away. 00:03:18
And at other times, the southern hemisphere 00:03:19
leans towards the sun, 00:03:22
and the northern hemisphere leans away. 00:03:23
That pattern, my friend, is what makes seasons. 00:03:25
When the part of the world that you're living in 00:03:28
is leaning towards the sun, 00:03:29
It's warm and the days are long. 00:03:31
Summer, when you're on the part 00:03:32
that's leaning away from the sun, 00:03:34
it's cold and the days are short. 00:03:36
Winter, in between, it's spring or autumn. 00:03:37
If the Earth weren't tilted, 00:03:40
we would have the same season all year long. 00:03:41
So, revolution, rotation, orbit. 00:03:45
Is your head spinning? 00:03:47
Let's do a demonstration to shed a little light 00:03:49
on these concepts. 00:03:51
Okay, you're gonna need a globe 00:03:56
and a table lamp without a shade, 00:03:57
plus a table to put them both on. 00:03:59
Put the lamp in the center of the table 00:04:01
and turn it on. 00:04:02
Put the globe on one side of the table. 00:04:03
Now hit the lights. 00:04:05
The globe is Earth. 00:04:06
Makes sense, right? 00:04:07
The lamp at the center of the table 00:04:08
is the sun at the center of the solar system. 00:04:10
Now slowly spin the globe. 00:04:12
As the Earth rotates, the sun lights up one side 00:04:13
of the planet better than the other. 00:04:16
It's day where the light is shining more brightly 00:04:17
on the globe and night where it's not. 00:04:19
Now let's see what the Earth's revolution 00:04:21
around the sun looks like. 00:04:22
Give the globe a few spins with one hand 00:04:24
while slowly pushing the globe in a circle around the sun 00:04:26
or the lamp with your other hand. 00:04:29
So, do you notice how the Earth keeps rotating 00:04:30
as it revolves around the Sun? 00:04:33
If this were the real Sun and Earth, 00:04:34
by the time you get back to where you started, 00:04:36
the globe would have completed 365 rotations or days, 00:04:38
and that's another year gone by. 00:04:41
So, what does all this show us? 00:04:43
It shows that what looks to us 00:04:49
to be the motion of the Sun in the sky 00:04:51
is really caused by the motion of the Earth. 00:04:53
So now you know. 00:04:55
When you look up and see the Sun setting or rising, 00:04:56
it's not going around us. 00:04:59
It's sitting pretty much at the center of the solar system, 00:05:00
while we and the seven other planets go around it. 00:05:03
That sun, always gotta be the center of attention. 00:05:06
It was a little quick, but I hope. 00:05:16
Well, the sun hit the depth of the Earth, okay? 00:05:24
We are in the up, so we're on the top. 00:05:34
When the sun hit in the down, 00:05:38
It's winter for us. What months are winter? We have December, January, February. Then 00:05:41
we go to spring. Between winter and summer we have the spring. It's March, April, 00:05:52
May. In winter it's cold, in spring it's mild temperature, it's rain, it's when the 00:06:02
flowers and then we have the summer the summer is when the Sun hit the top of 00:06:11
the planet okay where we are is June July August those are the months for the 00:06:19
summer and we go back to the winter but for that we go by autumn September 00:06:28
October, November. Those are the months for autumn. So, in spring we go from cold to warm. 00:06:37
In summer we go from warm to cold. Okay, let's try. If you have the audio, you can do it 00:06:47
in your digital pick. If not, I'm going to play it now, okay? So, listen and say the 00:06:55
correct season. 00:07:01
1. Listen and say the correct season. 00:07:03
December, January, February. 00:07:08
OK. What season is that? 00:07:13
Winter. 00:07:21
Winter. 00:07:22
March, April, May. 00:07:26
OK. What season is that? 00:07:30
Spring. 00:07:37
June, July, August. 00:07:43
What season is that? 00:07:47
Summer. 00:07:53
September, October, November. 00:08:00
And the last season? 00:08:04
autumn okay very good i'm sure you did great okay so we have to do the same with number two 00:08:10
we have the months and we have to provide the season we have to write winter spring summer 00:08:22
autumn okay it's very easy now i'm going to fit some videos about 00:08:29
and they are virtual so you can learn more about this 00:08:39
Subido por:
Virginia M.
Licencia:
Todos los derechos reservados
Visualizaciones:
18
Fecha:
28 de abril de 2021 - 9:06
Visibilidad:
Clave
Centro:
CP INF-PRI NTRA. SRA. DE FATIMA
Duración:
08′ 52″
Relación de aspecto:
1.78:1
Resolución:
1920x1080 píxeles
Tamaño:
60.09 MBytes

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