【臺詞】Do You Know S1-09 Hot Water and Toothpaste

【臺詞】Do You Know S1-09 Hot Water and Toothpaste

Do You Know S1-09a Hot Water1人有 · 書評1 Do You Know S1-09a Hot Water

Do You Know S1-09b Toothpaste1人有 · 書評1 Do You Know S1-09b Toothpaste

Hello, I'm Maddie,

and it's bath time.

And I'm just about to run a bath.

Let's pop the plug in

and turn on the tap.

I love bath time. Do you?

What do you like most about it?

Is it...

..the rubber ducks?

QUACK QUACK!

Or the bubbles?

I love a bubble bath, so,

I'm going to pour in

a nice big dollop of bath foam.

Remember, you must always get

a grown-up to run your bath.

Listen to the sound.

Swish, swish, swish.

And now we have lots of

lovely bubbles.

QUACK QUACK!

What else do you like about

bath time?

I like that the water is

nice and warm.

But do you know where the

water comes from?

How does it get into the taps and

how does your bathwater get warm?

How does hot water work?

Let's go and find out.

Your bathwater starts its

journey here,

in a reservoir.

A reservoir is a big lake that's

used to store water.

The water collected here will come

from rivers and streams,

and also the rain.

All the water that is collected here

in the reservoir is cleaned,

so that it's safe.

And then it's sent through

pipes to our houses.

There are lots of pipes under the

roads and pavements

where you live, and some of these

big pipes carry water

all the way from the reservoir into

your house.

In your bathroom at home, you might

have a sink and a tap just

like this one, and to get water all

you need to do is turn the tap on.

Amazing, isn't it?

But the water that comes from the

reservoir is cold,

so...how does it get hot?

To make the water hot,

we need one of these,

a boiler.

There are lots of different types of

boiler,

and you might have one in your

house.

Let's find out how this one

makes the water hot.

The water from a reservoir goes

through a building to be cleaned.

It's then sent by pipes to

our homes.

One of the ways cold water is heated

in your house is by a boiler.

Inside the boiler is a small tank.

The water gets heated there by

a row of flames or electricity.

When it's hot, the water is sent out

through another pipe

to a much bigger tank.

This big tank is called a cylinder.

Inside it, there is a big heated

coil,

which keeps all the water

warm until you want to use it.

When you turn the hot water tap on,

it lets water from the cylinder tank

travel along the pipe,

into the tap and out into

your bathtub.

WATER BUBBLES

QUACK QUACK!

Aww, it's lovely and warm.

But remember, it's important that

a grown-up always checks

how hot the water is before you

get in the bath.

To see how hot the bathwater is,

I've got a special camera.

This is called a thermal camera,

and it tells us

what's hot and what's cold by

showing us different colours.

Ooh, hello everyone!

What colours can you see?

Blue things are cold and red

things are warm.

So, look, can you see just

how red my face is?

And that's because the inside

of my body is warm.

What about the inside of my mouth?

SHE BREATHES OUT

Whoa!

It's so hot that it's white.

Let's have a look down at the floor,

shall we?

My feet are bright red because my

feet are warm, apart from my toes.

My toes are freezing.

SHE LAUGHS

But if cold things are blue and

hot things are red,

do you know what colour the

bath will be?

Ohh!

Wow, look at that!

The bathwater is bright red

and yellow,

and that's because it's warm.

In some places the water is

even white,

and that's where it's very hot.

But can you see, the mountains of

bubbles are blue?

And that's because the bubbles are

cooler than the water.

You know what else is blue?

QUACK QUACK!

Our little rubber duck friends.

Look at the blue duck, swimming

around in the swirly red water.

Let's turn on the cold water

and see what happens.

Whoa!

It's really dark blue.

The water must be freezing.

Now let's see what happens when we

turn the hot water on instead.

Did you see the colour change as it

went from cold water to hot water?

The hot water is red and white,

which means it's hot.

And that's because the cold water

has come from the reservoir,

through the pipes under the roads

and into your house.

It's then gone to the boiler, where

it's been heated up and kept warm

in the cylinder tank, ready to go in

the bath when I turn on the hot tap.

Excellent.

What was your favourite bit about

finding out how hot water works?

Do you remember what you call

a lake that stores rainwater

for us to use in our homes?

Yes, it's a reservoir.

Did you hear the sound the water

made when I swished it in the bath?

WATER SLOSHES

And did you see how the thermal

camera made hot things look red

and cold things look blue?

Now, after I have a bath, there is

an important thing I have to do

every night before I go to bed.

Can you guess what it is?

Yes! Brush my teeth.

And to make my teeth squeaky clean,

I have to brush them with

toothpaste.

My toothpaste is stripy.

But do you know,

how does toothpaste get its stripes?

Let's go and find out.

Your toothpaste is made in

a big factory like this.

This factory makes one million tubes

of toothpaste every day.

That's a lot of toothpaste.

The toothpaste ingredients arrive at

the factory

in lorries like this one.

It's called a tanker,

and it looks a bit like a tube of

toothpaste, doesn't it?

This tanker is full of something

called "silica"

that looks like this, a white

powder.

It gets pushed through the tubes

way up into the factory.

Over to you!

BEEP BEEP

As well as silica, there are other

ingredients to be used.

And they have quite

complicated names like,

"xanthan gum" or

"trisodium citrate dihydrate".

Try saying that quickly.

The first thing is they're all

taken to a giant mixer.

BEEP BEEP

And this is it.

All of the ingredients are mixed in

this giant tank,

to make a paste that we call

toothpaste.

But it's not quite ready yet.

Can you remember what my favourite

type of toothpaste was?

Yes, it's stripy toothpaste.

So, do you know how toothpaste

gets its stripes?

Well, for the stripes we

need to add colour.

Red and blue, but you only need to

add a very little bit.

Can you believe that this much blue

dye would be enough

for 50,000 tubes of toothpaste?

That's enough toothpaste for

a tube for every single person

in a packed-out football stadium.

Wow.

The toothpaste travels from the

mixture,

all the way along these pipes

into these big silver pots,

where some of the toothpaste

gets its colour.

We have red and blue, and look,

you can even see some of the red and

blue dye around the machine.

Once the colour has been added,

all the toothpaste gets pushed

through these pipes that go down

into the floor.

Where do you think it goes next?

It comes through the ceiling to the

floor below through these pipes.

One pipe is carrying red toothpaste,

the other, blue toothpaste,

and the last one, white toothpaste.

The toothpaste is checked to make

sure it's properly mixed,

so, some of it is brought

here to be tested.

Uhhhh, ha-ha!

Look at all this gloopy toothpaste.

Have you ever seen

so much in one place?

Looks a bit like ice cream.

But what about our stripy

toothpaste?

Look at all these empty tubes.

They travel through this machine,

where they get flipped upside down,

ready to be filled with our stripy

toothpaste.

This super-fast machine is putting

the toothpaste inside the tubes.

Inside these pipes, the three

colours of toothpaste - white,

red and blue,

are being pushed into the tubes.

Can you see the stripes?

This is one of the pipes that fill

the toothpaste tubes

inside the machine.

And look, you can see how the

toothpaste is squeezed

through these four holes to make

this pretty pattern.

It's a bit like a star, isn't it?

It all happens very fast,

doesn't it?

I think this is time for one of

my special cameras.

This camera films things in

slow-motion, which means we can see

things that are really quick, like

this machine, slowed right down.

Are you ready?

Let's go.

Watch how our three colours of

toothpaste are getting pushed

into the tubes at the same time,

to make perfect stripes.

Now a stopper is put in the

bottom of the tube,

so the toothpaste doesn't fall out.

This grabbing arm flips the tubes

the right way up,

and they're ready to go off and be

wrapped and packaged.

The tubes move along here,

and it looks a bit like

a model railway, doesn't it?

MACHINE CLANKS AND WHIRS

Can you hear the sound of

the machine?

MACHINE CLANKS AND WHIRS

It's got quite a good beat.

Now the tubes of toothpaste go to

a robot that wraps

a label around each one,

puts them inside boxes,

and then they're ready to

go to the shops.

What was your favourite bit about

the toothpaste-making factory?

Do you remember what my favourite

kind of toothpaste is?

That's right, it's stripy.

Did you hear the sound of the

machinery

as it flipped the toothpaste tubes?

MACHINE CLANKS AND WHIRS

It had a really good beat.

Did you dance too?

And did you see the way the

toothpaste was put inside the tubes?

That machine was so fast, we had to

use my special camera

to see it in slow motion.

So, now you know how toothpaste is

made

and how hot water comes out of the

taps.

I think it's time I brushed my

teeth and had a bath.

See you next time.