Diving Nina and the Neurons

# If you've got a question and you don't know where to go

# Ask Nina for some help Cos she's got a science show

# She makes sense of her senses While helping all her fans

# By doing her experiments with potions and with bangs

-# Touch your tongue

-Tongue!

-# Fingers

-Fingers!

-# Eyes.

-Eyes!

-Ears.

-Ears!

-Nose.

-Nose!

# Nina and the Neurons find out what you need to know

# Nina and the Neurons find out what you need to know

# Luke, he helps us with our eyes and Felix with our touch

# Ollie sniffs out smells And Belle, she hears so much

# Bud is Ollie's brother He helps us with our taste

# They're Nina's little Neurons And they're coming to your place!

-# Touch your tongue

-Tongue!

-# Fingers

-Fingers!

-# Eyes.

-Eyes!

-Ears.

-Ears!

-Nose.

-Nose!

# Nina and the Neurons find out what you need to know

# Nina and the Neurons find out what you need to know

# Oh, yeah! #

Go further down, diver, further down!

Oh. Oh, hello!

I'm just...testing my new tank. Yes. It's looking very good.

BEEPING

I hear a beep, I see a flash, I wonder what they're going to ask.

-ALL: Hi, Nina.

-Hi, guys.

-We've got a question for you.

-How do divers breathe underwater?

That's a great question. How do divers breathe underwater?

Divers can swim down to the bottom of the sea

and stay there for a long time but how do they do it?

Come to my workshop and we'll investigate.

ALL: See you soon, Nina. Bye!

Bye.

Well, I'm going to need some help to answer this one

and I know just who to ask.

OK, Neurons, time to get to work.

ALL: Neurons at the ready, Nina.

OK. Today's question is, how do divers breathe underwater?

Which Neuron will be most useful to help find the answer?

ALL: Me! Me! Me! Oh, me!

Will it be fabulous Felix?

I can help so very much if you need the sense of touch.

Will it be beautiful Belle?

I send messages to brain from ear. If there's a sound, I'll help you hear.

Will it be lovely Luke?

For looking and seeing, day or night,

I'll help you with your sense of sight.

Will it be awesome Ollie?

If it's pongy or whiffy but you can't tell,

-my messages help your sense of smell.

-Or will it be baby Bud?

Sour, salty, bitter or sweet, I'm your taste buddy whenever you eat!

It's Felix.

CHEERING

Go, Felix! Go, Felix! Go, Felix! Go, Felix! Go, Felix!

Go, Felix! Go, Felix!

Marvellous. A little touch can mean so much, Nina.

Today's question is, how do divers breathe underwater?

When we go swimming, we can feel the water all around us.

Felix, our touch neuron, will be helping us.

But stand by, Neurons. I may need help from all of you.

I need to get the workshop ready before the Engineers arrive.

Josh loves music. Dan likes rugby. Jack loves climbing.

I can't breathe underwater.

Divers can go underwater for a long time.

How do divers breathe underwater?

So today, for one day only, Josh, Dan and Jack become...the Engineers.

-Hi, guys.

-ALL: Hi, Nina.

-Welcome to my workshop.

Thanks for your great question, how do divers breathe underwater?

Lots of people like to swim underwater

so they can see all the different fish.

And divers can stay underwater for a very long time.

But how do they do it?

To find out the answer, let's start by using our senses.

ALL: Whoo-whoo! A senses experiment! We're ready, Nina.

OK, Engineers.

Can you hold a hand in front of your nose and mouth like this?

Now, can you feel the air going in and out?

-Yes.

-Yes.

-Yeah.

It feels funny, Nina, like the air is tickling my fingers.

Have a look at this little toy man.

He has air all around him, just like us, so he can breathe.

But what if he goes underwater?

Whoo! Here he goes.

Now he has water all around him instead of air,

which means he can't breathe.

So he would have to swim back up to the top to get some air.

Come on, diver. Whoo! There you go, little diving man.

You're back at the top so you can breathe again.

But real divers need to stay underwater for much longer.

They need air underwater to breathe.

Engineering is all about problem solving,

so let's see if it can help us find a way to get air

to a little toy man when he goes down to the bottom of the tank.

Whoo!

-Who knows what this is?

-A straw, Nina.

If our toy man had a tube with one end in the air sticking out

of the water and the other end in his mouth under the water,

then he'd be able to breathe.

So let's see if I can blow some bubbles down to our toy man.

SHE BLOWS BUBBLES

It's working. I see lots of bubbles.

So, we managed to get air down to our little toy man.

We got air underwater. Some very clever animals do this, too.

Let me show you.

When elephants go swimming underwater,

they use their trunks to breathe air from out the top of the water.

Can we breathe underwater like that?

That's a great question.

To find out, we need to go somewhere that's very fun and very, very wet.

Let's go, Engineers.

Yeah!

FELIX: Where is Nina taking us?

-BELLE:

-Nina said somewhere wet and fun.

Maybe we're going for ice cream. That's wet and fun and it's yummy!

-LUKE:

-This doesn't look like an ice-cream shop.

Now, I know you guys can all swim

and we've come here to this swimming pool.

Always have an adult with you when you go swimming.

We're going to try breathing air through a tube

when we're under the water. And we're going to use one of these.

It's a bit like the straw we had in the workshop.

This is called a snorkel.

A snork what?

A snorkel, Bud. It's called a snorkel.

It's a special tube that people use for breathing underwater.

-Now, who wants to go for a swim?

-ALL: Me!

I love swimming, even if the water goes up my nose sometimes.

OK, Engineers. It's time to try your snorkels.

Put your face in the water and breathe air in through your snorkel.

Go!

ALL BREATHE LOUDLY

Could you breathe with your face under the water?

Yes, Nina, I could breathe underwater.

Brilliant. Now we're going to have a test to see how useful snorkels are.

There are coloured plastic dolphins on the bottom of the pool.

Now, we have to swim across and look underwater.

Now, Jack, I want you to count the green dolphins.

Josh, you count the red dolphins.

Dan, you're going to count the yellow dolphins.

And I am going to count the blue dolphins but I won't have a snorkel.

-So, is everybody ready?

-ALL: Yes!

Three, two, one, go!

Poor Nina has to keep coming up for air.

-LUKE:

-Look at those Engineers go. They are all doing great.

Oh! Well done, Engineers. How many dolphins did you count?

-I've got three.

-Four.

-Five.

I got five as well

but you counted your dolphins much quicker than I did.

You were breathing through a snorkel

so you could keep your face in the water for longer.

I had to stop to come up for air.

You stayed near the top of the water,

but if you wanted to swim further down,

the snorkel wouldn't reach the air above the water.

But divers swim much further down,

so how do they breathe deep down under the water?

Let's find out.

Now we're going to see how engineering helps divers

take air underwater.

When people swim way down under the water like this, it's called diving.

Divers can stay under the water for a really long time

and they've been specially trained to swim underwater safely.

Diving looks so cool. You can see so many amazing things under the water.

Do you see the bubbles?

That's the air that the divers are breathing out.

Divers take air with them in a tank,

so let's go and find out how they work. Follow me.

These are the diving tanks and they're full of air

so the divers can breathe underwater.

There's lots and lots and lots of air squashed into here.

Now, let's pretend air is like this sponge.

This sponge is taking up lots of space.

Does it look like it would fit into this small container?

-No, Nina.

-Well, let's see if I can squash it in.

SHE GRUNTS

That feels tough, Nina. But you can do it. Keep pushing.

SHE LAUGHS

Ha! I've done it. The sponge is now squashed into the small container.

It's the same size sponge as before but now it takes up less room.

If I take the sponge out...

..it becomes its normal size again.

Now, air is squashed into these tanks

just like I squashed this sponge.

Engineers discovered how to squash lots and lots of air

into small tanks.

A diver with these tanks can swim around the bottom of this pool

over 50 times without having to come up for air.

So, your question was, how do divers breathe underwater?

And I think we've answered it.

We discovered if we're swimming near the top of the water

we can use a long tube called a snorkel.

When we swim further down, that's called diving.

And divers take air with them in tanks

and there's lots of air squashed into the tanks

and this means the divers can breathe underwater

for a long, long time.

I hope that's answered your question.

-ALL: Thanks, Nina.

-You're welcome.

# Nina and the Neurons! #

If you want to know more about science and engineering around us,

visit the Nina section on the CBeebies website. Have fun.

-# Pulling.

-Pushing.

-Twisting.

-Mixing.

-# Drilling.

-Squeezing.

-Floating.

-Go engineering

# Go engineering!

# When you need to fly it, make it, shape it

-# Go engineering

-Go engineering!

# When you want to build, go engineering

# Engineering!

# When you've got to solve a problem but you don't know how to do it

# It's time to go engineering

# Engineering!

# When you want to lift it, stick it, pop it, bend it

# It's time to go engineering

# Engineering!

-# Go engineering

-Go engineering!

# When you need to fly it, make it, shape it

# Engineering!

-# Go engineering

-Go engineering!

# When you want to build, go engineering

# Go engineering! #

I've had a brilliant day. I loved listening to the bubbles

coming from Nina's straw under the water.

I really enjoyed myself today. The divers were amazing.

It's been a marvellous day.

Even if squashing that sponge felt like hard work.

Remember, engineers help to build the world around us.

They make things work and use science to solve problems.

See you again soon. Bye.

Bye!

# Go engineering! #

Subtitles by Red Bee Media Ltd