Boat Propeller and Hot Air Balloon Do You Know?

# There are lots of things all around us

# Exciting things that surround us

-# But how does it work?

-Do you know?

-# How is it made?

-Do you know?

# Things that go up Things that go down

# Things that go pop! Things that go around

# With special cameras to show you inside

# It's going to be a big surprise

-# But how does it work?

-Do you know?

-# How is it made?

-Do you know?

-# Do you know?

-Let's find out! #

Hello, I'm Maddie. And today, I'm looking at transport

and the different ways you can travel around.

Oh, look! There's a boat!

I love boats! Do you?

I like the way they glide about on top of the water.

But do you know how a boat moves?

How does it work? Let's find out.

How does it work?

A boat!

Come on, we're going for a boat ride.

Let's go! Ha-ha-ha-ha! And we're off!

Whee! Hee-hee-hee!

This is so much fun!

You can see there are lots of different parts to a boat.

That's the front, the pointy bit, and it's called the bow.

And this is the back, it's called the stern.

And then that is the engine.

And in the middle, we have places to sit and put our things.

At the bow, there is something called an anchor.

Peter lowers the anchor into the water, to the bottom of the lake,

where it will hook into the ground and hold the boat in one place.

But there are lots of parts of the boat you can't see.

Do you know why? It's because they're in the water.

I know!

Let's use my special camera and this underwater light

to see if we can get a closer look.

Now you can see underneath the boat, and this is what makes it move.

This is called a propeller.

Here's a little toy boat.

You might have one like it to play with in the bath.

And this one has propellers, too. Can you see?

The propeller looks a bit like a fan that goes round and round

and cools you down, doesn't it?

But on a real boat, the propeller is powered by an engine.

That's what makes the boat move.

The engine and propeller are attached to each other.

Petrol goes in the boat engine.

And when it starts, it makes a big brum-brum noise.

WHIRRING

Inside, the petrol starts to burn.

And as it does, it creates a powerful gas.

The gas pushes a long pole called a piston

backwards and forwards, backwards and forwards.

As the piston moves, it turns a cog at the bottom.

This cog turns another cog

attached to the propeller outside the boat.

As the propeller spins round and round,

it pushes the boat through the water.

Let's go!

Look at the propeller. You can see the blades spinning around,

pushing the water away behind it and sending the boat forwards.

To take a closer look at the propeller,

we are using something called a winch to pull the boat in.

MADDIE LAUGHS

I'm helping pulling the boat in. Doesn't the winch sound great?

CLICKING

Clickety-click!

The propeller has three blades.

One, two, three.

These three blades help push the boat through the water.

Being on a boat is such great fun!

But if you were on a boat, where would you like to go?

Can you remember the name of the front of the boat?

It's the pointy bit and it's called the bow.

Did you hear the winch as it pulled the boat out of the water?

It went clickety-click.

And did you see the propeller spinning round and round?

So next time you see a boat, you'll know just how it works.

There are lots of other ways to travel.

On the water, on the ground, in the sky.

What things travel up in the sky?

There are aeroplanes, helicopters

and my personal favourite, the hot-air balloon.

This is just a toy hot-air balloon. The real thing is much bigger.

But do you know how a hot-air balloon is made?

Let's find out.

How is it made?

A hot-air balloon.

Hot-air balloons are really big.

They have a basket for people to ride in

and a huge balloon which lifts the basket high into the sky.

And this is where they're made.

Yes, this is a hot-air balloon factory!

And that is a lot of material.

The material is called nylon and it arrives in the factory in big rolls.

So, how does all this become a balloon?

First, the material needs to be cut into smaller pieces

with a small, round cutter.

Here it is. It fits inside the machine, just here.

Let's see it cut the material into smaller pieces

using my special camera.

With my special camera in place, it's time to turn the machine on.

The cutter is programmed by a computer

to cut the strips into the right size.

It moves along really fast.

It doesn't look like it's doing anything,

but believe it or not,

that is cutting the material into smaller pieces.

It takes lots and lots of these strips of nylon

to make a hot-air balloon, but how are they joined together?

That happens here, in the sewing room.

The sewing machine joins up the edges with thread

using a special stitch so the material won't tear.

Listen to that sound.

WHIRRING

It's a bit like a jigsaw.

The pieces have to be sewn together in the right order

so that you end up with a perfect-looking balloon.

Whilst the balloon is being sewn together,

in another part of the factory, the team are working on the basket.

The basket is made from willow,

a type of tree that is light and bends into shapes easily.

Look how the wood has been woven.

It's like a bigger version of a basket you might have at home.

Like a bin!

Or a fruit basket.

Have you got a basket at home?

But this basket is going to carry something much heavier than fruit.

It's amazing to think that this will soon carry people high,

high up into the sky.

Back upstairs, one of the balloons is ready.

But do you know how much material

goes into making just one balloon?

Wow! Look how much material there is.

It's like the biggest superhero cape ever!

But to see just how much material there really is,

let's fill it with air.

WHIRRING

Wow! It's enormous! It's so big, it won't even fit inside this room.

Big moment. Let's go inside!

Oh! That is amazing!

Let's go on an explore around the balloon with my special camera.

Look just how huge this balloon is!

You can see how all of the pieces of material

have been stitched together.

There's actually a thousand metres of material here.

If you stretched all of that out,

it would be the same as 80 big buses in a row!

HORN BEEPS

So we have the balloon and we've got the basket,

now we just need to see it fly.

The team are getting a hot-air balloon ready to fly.

First, they have to unpack all the material and lay it out flat.

I'm so excited to see all of this flat material inflate.

Next, the team are going to inflate the material with air

using a fan so that it blows up.

It's a bit like a party balloon.

Only a lot bigger.

Where'd it go?

Wow! This hot-air balloon is enormous!

This is the gas burner.

It makes the air inside the balloon hot,

which lifts it off the ground and makes it fly.

Look at that, a giant white balloon!

What do you think it looks like?

I think it looks a bit like a huge egg.

Just look at this hot-air balloon.

Isn't it incredible how a flat piece of material can turn into this!

I loved seeing how a hot-air balloon was made.

What was your favourite bit?

Do you remember the name of the part of the balloon

that carries people?

That's right, it's the basket.

Did you like the sound of the sewing machine

when it sewed all the material together?

WHIRRING

And did you see how big the balloon was when it filled up with hot air?

It was huge!

So now we know how a hot-air balloon is made.

With lots of material, lots of sewing

and this bendy wood that's used to make the basket.

And now we know how a boat works,

using a propeller under the water to push the water away.

Right, there's only one thing left to do. Fly!

Up, up and away!

I'll see you next time. Bye!

# There are lots of things all around us

# Exciting things that surround us

-# But how does it work?

-Do you know?

-# How is it made?

-Do you know?

-# Do you know?

-Let's find out! #