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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.

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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?

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okay so the earth takes this way we call this orbit okay it has another set it's not a circle

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it's an ellipse safe okay and it takes 365 days that's one year okay

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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.

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So, who moves? The sun or the earth? That's what you need to know to do number 1.

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So now, circle the things that move. Does the sun move? Does the planet move? Does the other planet move?

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So, which one of them move?

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Now, in the number 2, it's very easy.

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throw, you already know what is throw, the earth moving around the sun, so you have to

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throw the sun, throw the earth, moving around, very easy, right?

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But before, we are going to see, to watch a video, because the revolution is the reason

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for the four seasons, okay, the revolution caused the four seasons, when the earth is

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near the sun, it's warm, so it's summer.

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When the Earth is far from the sun, it's cold,

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but it's not that easy, okay?

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We are going to watch a video about this.

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As the Earth is both rotating and revolving,

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it's not sitting straight up and down.

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Its axis is actually tilted just a little.

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It's not all that much, but this tilt causes one part

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of the Earth to lean towards the sun,

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while another part of it is leaning away.

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This means that different parts of our planet's surface

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gets different amounts of sunlight and heat.

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So, why am I telling you all of this?

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Well, as the Earth travels around the sun,

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it creates a pattern throughout the year.

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This pattern happens over and over again,

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and I'm sure you've noticed it.

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At certain times of the year,

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you see the northern hemisphere leans towards the sun,

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and the southern hemisphere leans away.

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And at other times, the southern hemisphere

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leans towards the sun,

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and the northern hemisphere leans away.

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That pattern, my friend, is what makes seasons.

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When the part of the world that you're living in

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is leaning towards the sun,

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It's warm and the days are long.

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Summer, when you're on the part

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that's leaning away from the sun,

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it's cold and the days are short.

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Winter, in between, it's spring or autumn.

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If the Earth weren't tilted,

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we would have the same season all year long.

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So, revolution, rotation, orbit.

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Is your head spinning?

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Let's do a demonstration to shed a little light

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on these concepts.

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Okay, you're gonna need a globe

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and a table lamp without a shade,

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plus a table to put them both on.

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Put the lamp in the center of the table

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and turn it on.

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Put the globe on one side of the table.

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Now hit the lights.

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The globe is Earth.

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Makes sense, right?

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The lamp at the center of the table

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is the sun at the center of the solar system.

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Now slowly spin the globe.

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As the Earth rotates, the sun lights up one side

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of the planet better than the other.

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It's day where the light is shining more brightly

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on the globe and night where it's not.

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Now let's see what the Earth's revolution

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around the sun looks like.

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Give the globe a few spins with one hand

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while slowly pushing the globe in a circle around the sun

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or the lamp with your other hand.

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So, do you notice how the Earth keeps rotating

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as it revolves around the Sun?

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If this were the real Sun and Earth,

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by the time you get back to where you started,

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the globe would have completed 365 rotations or days,

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and that's another year gone by.

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So, what does all this show us?

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It shows that what looks to us

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to be the motion of the Sun in the sky

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is really caused by the motion of the Earth.

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So now you know.

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When you look up and see the Sun setting or rising,

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it's not going around us.

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It's sitting pretty much at the center of the solar system,

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while we and the seven other planets go around it.

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That sun, always gotta be the center of attention.

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It was a little quick, but I hope.

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Well, the sun hit the depth of the Earth, okay?

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We are in the up, so we're on the top.

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When the sun hit in the down,

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It's winter for us. What months are winter? We have December, January, February. Then

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we go to spring. Between winter and summer we have the spring. It's March, April,

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May. In winter it's cold, in spring it's mild temperature, it's rain, it's when the

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flowers and then we have the summer the summer is when the Sun hit the top of

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the planet okay where we are is June July August those are the months for the

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summer and we go back to the winter but for that we go by autumn September

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October, November. Those are the months for autumn. So, in spring we go from cold to warm.

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In summer we go from warm to cold. Okay, let's try. If you have the audio, you can do it

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in your digital pick. If not, I'm going to play it now, okay? So, listen and say the

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correct season.

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1. Listen and say the correct season.

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December, January, February.

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OK. What season is that?

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Winter.

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Winter.

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March, April, May.

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OK. What season is that?

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Spring.

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June, July, August.

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What season is that?

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Summer.

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September, October, November.

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And the last season?

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autumn okay very good i'm sure you did great okay so we have to do the same with number two

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we have the months and we have to provide the season we have to write winter spring summer

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autumn okay it's very easy now i'm going to fit some videos about

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and they are virtual so you can learn more about this