Lesson video

Hi everyone.

I'm Ms. Harris, welcome to today's science lesson.

This is our final lesson of our seasons and the weather unit.

Today's lesson is all about how can we record wind direction? We're going to learn what wind is, the types of wind, and then we're going to do an experiment at the end of the lesson.

So for today's lesson, you will need your exercise book, a pencil, a green pen, or a coloured pencil so that you can edit your work and you will need three pieces of paper so that you can write down the things that we will need for our experiment later on.

Okay? If you don't have three pieces of paper, don't worry.

You can just use the back of your exercise book.

So this week we are analysing the wind outside and the effects that wind has on our environment.

So this week we are going to be a special type of scientists called a meteorologist.

What's it called? A, a meteorologist is a person, who, let's have a look, is a scientist who studies the weather.

It's a scientist who studies the, weather, good.

Now meteorologists like to work out where the wind will blow and what weather it will bring.

They are most interested in the wind direction and the speed.

But we're going to look at that in a moment.

Now, stand up wherever you are.

We're going to do our star words, the important ones we're going to use this lesson.

Ready? So it's my turn, then your turn Star words star words star words.

Motion.

Motion means to move.

It means to: motion means to get speed.

Storm.

Gale.

Gust.

Scale.

Blowing.

Wind.

Good, sit back down.

Okay, your first task for today.

We've done this every lesson so far.

This is the last time we're going to be doing it though.

I would like you to go to your window and draw the weather that you can see outside.

Pause the video and have a go at that now.

Okay, great work.

Now we'd like you to write one sentence about the weather.

You can use this sheet, the star words, to help you with your spelling, which is really important.

So my sentence will be today is um, so I'm going to write what day of the week it is.

Today is um, the weather is windy and cloudy, but where you are, it might be sunny and um.

You can write that down.

Now, pause the video.

Great work.

Now, in this lesson we're looking at, what is wind? Wind is when air moves.

Wind is when? Good.

So we, we can't see the wind outside, but we can see the wind moving the objects in our environment.

So things around us.

If the wind is really strong, it might sound a little bit like this.

So you can even be blowing and whistling.

And sometimes you might hear the trees rustling as well.

Great.

So wind is when air moves around us.

Can you say that all together? Ready? Wind, you can use your finger.

Wind is when air moves around us.

Good job.

Now you ready? Let's see if you can remember what wind is.

Can you write this in your book and fill in the gaps? Off you go.

Pause the video.

Great job.

Let's check the answers.

So wind is when air moves around us.

Great job.

If you have made a spelling mistake there, use your coloured pen to put a nice, neat line through it and write it above it.

So pause the video if you need to do that.

We've just been learning about that wind is when air moves around us.

So we can't see wind, but we can see it moving things around us.

And here are some examples that you might know.

So when you go outside your hair might move because it's blowing around in the wind.

I've got quite long hair, so my hair does often blow around in the wind, I have to tie it up.

You might see trees swaying in the wind, especially if the wind is really strong.

You might see the leaves rustling on the floor and sometimes on the playground or maybe outside your house, when the wind is really strong it might blow the leaves into almost like a tornado, a big circle.

Then you may see plants rocking in the fields, especially if it's really breezy.

You might see flags flustering in the wind, and you might see some washing waving outside.

Maybe someone in your family puts the washing outside, so it can be blown outside and dry.

So now your task is, I would like in your book to write down three examples of when you know the wind is blowing.

So what can you see? I've written one for you.

Trees are swaying.

Can you remember the verb, the action word that I used to describe the wind.

So trees are swaying.

So my verb there is swaying.

Can you remember the other ones? Pause the video.

Have a go at that now.

Great job.

Let's check the answers.

So we've got trees swaying.

Leaves rustling.

Hair blowing, Flag fluttering.

Washing waving, and plants rocking.

Now, if you want to challenge yourself, you can pause the video and use your coloured pen to write down those verbs.

But you don't have to, it's up to you, so if you want to do that pause the video.

now.

Thank you for working so hard.

So now we're going to talk about the types of wind.

Some are stronger than others.

Now I'm going to tell you them out of order.

So I'm not going to tell you which one is the strongest.

So I want you to listen really carefully.

Which is the weakest wind, which one doesn't cause a lots of damage? And which one is the strongest? Because in a moment, I'm going to ask you to put them in order.

So listen carefully.

So the first type of wind is a storm.

A storm is quite strong.

We have a lot in the United Kingdom, lots of storms in the winter and in the autumn.

It can cause high waves in the sea and trees can be pulled out of the ground.

This is called uprooting.

What's it called? Good.

Next one.

A breeze.

A breeze is a very gentle wind.

Smaller twigs move, leaves might rustle, and flowers might blow in the wind.

You could see the dandelion here dispersing its seeds in the wind as it blows.

So you might blow like this.

Because that's really gentle.

Then we've got a gust of wind.

A gust of wind is very sudden, very sudden and strong.

That means it can catch you by surprise and maybe blow your umbrella inside out.

We've then got a gale.

You might hear people say gale force winds.

That word force tells us that it's quite strong, gales.

It's a very powerful wind and whole trees can sway on the land, and in the sea there can be huge waves crashing onto the shore.

And lastly, we have got a hurricane.

You can see this picture from space.

A hurricane is when huge storms and winds, usually in tropical areas, they are ginormous winds and you can see it's almost like a big circle, like a tornado.

Hurricanes can cause a lot of damage to buildings and the environment around us.

Now, can you remember, which was the calmest type of wind? A breeze, well done.

So what is the strongest type of wind? We've just talked about it.

A hurricane, well done.

So I'd like you to have a go ordering them.

A gust and a gale you might not get the right way round at first, but we're going to check it after.

So give it to good go.

So pause the video and put these winds in order from weakest to strongest.

I've done the first one for you.

Pause the video, have a go with that now.

Right, let's check.

Get your coloured pen ready to tick or fix.

If you need to fix it, you're going to change it.

Ready? So a breeze is the weakest.

Then we've got a gust.

Then we've got a gale, then a storm.

And lastly, a hurricane.

Now we don't have a lot of hurricanes in the United Kingdom, so you don't need to worry about it, about that happening.

So how do we know the direction of the wind? So meteorologists, they describe wind direction and they use something called a compass.

There are four points on the compass.

We've got north, east, south and west.

Now wind direction, wind direction is the direction the wind is coming from, not where it is blowing to.

So if it comes from the east, have a look at the screen.

If it comes from the east, that way.

Sorry, this way.

If it comes from this way, we call it an easterly wind.

Let's go back, let's watch, ready? Watch the leaves.

An easterly wind is coming from the east.

Now wind socks, this is a picture of a wind sock, a wind sock is used in airports, but they show the wind direction.

They show where the wind is moving to.

We're going to be making a wind sock at the end of the lesson.

Now you can see that I have got something behind me.

What is this called? What are these called? Do you know? They're not giant fans.

And they are called, what, do you know? They're called wind turbines.

What are they called? Now wind is the fastest growing source of electricity.

So when you plug something in, something powers your plug.

Something comes a long way through a current into your plug.

That could be powered from the wind.

So the big wind, the turbines spin and they generate electricity.

It's apparently one of the cheapest ways because we will never run out of wind.

So it's a renewable energy because we won't run out of it and it doesn't leave any dangerous waste behind.

Now wind is also helpful to us because you can see here a picture of what plant? A dandelion, well done.

So wind disperses the seeds, which allows new plants to grow.

So when you blow a dandelion like this, the seeds fly around you.

And they go into a different place and they eventually will grow where they fall if there's lots of sun and some rain to help it grow.

That's why it's really good for our planet.

Now we're going to do a true or false quiz.

You don't need to pause the video.

You're just going to say the answer out loud to the screen when I read it.

Okay? So, A: wind helps to disperse seeds, true or false? What do you think it is? We're going to check them at the end.

Wind is not dangerous, true or false? Wind turbines produce renewable energy.

And lastly, we never have storms in the United Kingdom.

True or false? Thank you for saying it out loud.

Let's have a look at the answers now.

Let's see if you were right.

So wind helps to disperse seeds.

True, well done.

Wind is not dangerous.

False, wind can be dangerous, especially if it's a hurricane.

Wind turbines produce renewable energy.

True.

And lastly, we never have storms in the United Kingdom.

False.

We do have storms in the United Kingdom.

Now I'm going to tell you about something called the Beaufort Scale.

What's it called? The, The Beaufort Scale is something that meteorologists use to help understand the wind speed outside.

And they use a special number to know how strong the wind is, how quick the wind is blowing, the speed of it.

And they have a description and then they have something called land conditions.

That means what they can see outside to help them know which number it is on the scale.

So let's have a look at some of those.

So we've got the first one, which is zero.

It's calm, nothing's really happening.

Number one, we've got wind motion outside.

So you might see it as smoke, see the smoke moving.

Number two leaves rustle.

Three, smaller twigs in motion.

Then we've got a moderate breeze.

Small branches begin to move, smaller trees sway.

Larger branches move.

Whole trees move.

Twigs broken from trees.

Light structure damage.

Trees uprooted.

Wind spread, widespread structural damage.

That means lots of damage to our environment.

And lastly, a hurricane, which is the strongest one on the scale.

Now we, as our experiment, are going to be analysing the wind outside for one week.

How long for? Good, one week.

So I've made our own scale.

Mine's going to be called the Wizzy Wind Scale.

What's yours going to be called? Don't worry if you don't have a name now, you can think of it when you write it down.

So because we don't get hurricanes really in the United Kingdom, not very often, we're not going to put that on our scale.

We're going to have four points instead of 12, like the Beaufort scale, because that's too many.

So our one's going to be zero.

Our first scale number is zero.

It's calm outside, there's hardly any movement in the trees.

We're going to use trees as our, as our object that we're going to look at outside, sorry, just so that we can see what the wind is like outside.

So number one is breezy.

The leaves are rustling on the branches.

So you might describe the wind on that day as being scale number one, the leaves are rustling.

It's quiet, it's calm outside.

Number two, the gale.

So twigs start to break from the trees and whole trees might be moving.

And number four, we might have some stormy weather outside.

So strong winds and trees being uprooted.

That means pulled out of the ground.

So if you would like to, you can copy this down now, or you can take, ask your parents to take a picture of it in a moment, maybe on your tablet, or on their phone so that you can look at when you look at the weather outside.

But this is going to be your scale that you're going to use for your experiment.

So when you look outside, you're going to decide, is it zero, one, two, or three? So today when I look out of my window, I've got one next to my computer.

The trees are hardly moving outside, but I can see the leaves rustling in the branches.

So I think it's quite breezy.

So I might write number one, breezy.

So I'm going to show you how to make your Whizzy Wind Scale and show you what the experiment will look like.

And then I'm going to show you how to make a wind sock.

You will need a toilet roll tube, some string, some scissors, some paper, some sellotape or some glue.

We are going to make a wind sock that you can hang on your porch or on your balcony or in your garden.

And you can watch it blow in the breeze or in the wind.

So that might be what you want to look at if you don't have a tree outside your window.

Okay, I'm going to show you how to make your wind sock.

So I've got three pieces of paper.

And first.

I've already drawn my Wizzy Wind Scale onto the front of my book.

So with the other sheets of paper, you're going to fold them in half to make a little bit like we did our weather log.

So then on the front I can have my scale, so I know to look at it every time I go outside.

So you might want to draw this yourself.

You can just draw this part here, but it's really important you know what to look for, okay? So then on the inside I can draw, I can write Monday, or whichever day you're starting on.

So Monday.

And then I'm going to look outside at the trees and I'm going to decide, is it calm, breezy, gales, or storm? Which one is it? So I can see the outside, at the moment it is calm.

It's zero.

And I think I'm going to bullet point what I can see.

So I can see no trees moving.

I cannot see, I cannot see any leaves blowing.

No leaves blowing.

Looks like the wind's blowing.

And I can see that the trees are still.

So I'm just recording and writing down what I can see.

So my scale outside today is zero, and it's calm.

And I can see that there are no trees moving, no leaves blowing and the trees are still.

So that's what your wind log is going to look like for your experiment this week.

Don't, Okay, I'm going to show you how to make a wind sock.

So remember, you're going to need some string, some sellotape or some glue, some paper, some scissors, and you will need a toilet roll tube, okay? So what I'm going to do first is I am going to cut out some strips of my paper so that I can, I can sellotape them to the bottom of my wind sock to make it look nice.

You could use lots of other colours if you want to.

Okay, I think that will be enough.

So I'm going to put those to one side.

So then you will need to ask a grownup to pinch two holes, either side of your tube, and you are going to need some scissors so that you can cut a long piece of string.

It needs to be about 30 centimetres, trim it off.

Then you're going to put it through the holes of your wind sock.

So I'm going to push them, the string through the holes, make sure the holes are big enough to get your string through.

Sorry like this, there we go.

And then again, you might need a grownup just to tie a small knot at the top because it needs to be able to hang off of something because it's going to blow in the wind.

And it's knot, and then if you want to, you can just trim off the other bits of this string.

Okay? And the last part, there we go.

So now I've got my string up at the top.

I can hang it like this.

It's going to hang outside.

Then I'm going to use my strips to put at the bottom.

So what I'm going to do, the easiest way to get strips onto the bottom of your wind sock is to take a piece of sellotape, so I'm going to get one strip of sellotape, give me one second.

And I'm going to lay it very carefully upside down on the table like this, so that the sticky part's facing up, I can then stick on my piece of paper.

So they're hanging off the bottom, but leaving a gap in between so that when I stick them onto my wind sock, they do not fall off.

Okay? Then you're going to put your wind sock at the end and put the sellotape on the tip and just roll it across your sellotape, and you will see, that you will, bits of paper hanging off the bottom, like so.

So these will be able to flutter in the wind outside so I can hang it up like that.

So you could decorate this part if you wanted to, you could put more different pieces of paper at the end.

You could even cut them to make them, you can make them look even nicer than mine look right now.

So I might do lots of little snips in the bottom left.

So we'll fly in the wind outside.

Okay? So that's how you make a wind sock.

You have worked so, so hard today.

I will see you next time for our next unit called Sound.

Bye!.