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 scents 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! #

# Doo, doo, doo, doo-doo-doo... #

Oh, hello there. Just washing my hands.

Listen to the sounds the water makes.

WATER SPLASHES

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

BEEP! BEEP!

BOTH: Hi, Nina.

-Hi!

-We've got a question for you.

How do high divers make such a small splash?

Great question!

How do high divers make such a small splash?

When divers jump from really high up,

you'd think they'd make a big splash, but they don't.

Why not come to my lab and we'll investigate?

BOTH: See you soon, Nina! Bye!

Bye!

I'm going to need help to answer this

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 high divers make such a small splash?"

Which Neuron do you think will be most useful in helping us?

-Me!

-Me, me, me!

-Me!

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 Belle!

CHANTING: Go, Belle! Go, Belle! Go, Belle! Go, Belle!

Go, Belle! Go, Belle! Go, Belle!

Brilliant! I'm all ears, Nina.

Today's question is, "How do high divers make such a small splash?"

Because splashes are something we hear, Belle will help us.

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

I need to get the lab ready before the experimenters arrive.

Zak likes eating haggis.

Murray loves going to school.

Jumping in the water is fun.

I love splashing in the pool.

But they both want to know

how do high divers make such a small splash?

So today, for one day only, Murray and Zak become...

The experimenters!

-Hi, guys!

-BOTH: Hi, Nina.

Welcome to my lab and thanks for your question -

how do high divers make such a small splash?

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

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

First of all, let's take a look at a high diver in action.

Oh, here they go...!

-That was amazing, wasn't it?

-Yes.

-Yes.

-Yeah!

Did they make a big splash or a little splash?

Little splash.

That's right - only a little splash.

That's what high divers try to do, because in competitions,

they're scored on how good the dive is

and the size of the splash.

The smaller the splash, the better the score.

So let's experiment by listening to some splashes.

Brilliant! Time for me to get to work.

OK, we are going to take turns to drop different things

into this bowl of water.

Zak, you go first. Why not drop in this lovely, shiny stone?

SPLASH!

Your turn, Murray. You've got a rubber.

SPLASH!

NINA LAUGHS

Do you want to drop in that clip for me, Zak?

-What kind of splash was that?

-A little splash.

-Go for it!

-SPLASH!

Oh! I love splashy sounds!

What about the hockey puck? Watch and listen - go!

SPLASH!

-NINA LAUGHS

-That was brilliant!

It's amazing how many different splashing sounds we made.

-All the splashes looked different too, didn't they?

-Yes.

When something is dropped into water,

it pushes some of the water out of the way.

That's what makes the splash.

Why do you think all the different things made different splashes?

Cos they're all different shapes.

That's right - they were all different shapes and sizes.

Maybe shape and size are important when people dive into water, too.

Let's go somewhere with lots of water to find out.

-BELLE:

-Hm...where do you think we're going today?

LUKE: Nina said it was somewhere with lots of water.

-Maybe it's the beach.

-Oh, no - that means grainy sand.

And big, big ice creams! Yummy!

OLLIE: Look, everyone - we're here!

So we've come somewhere with lots of water - a swimming pool.

We want to find out if shape and size are important

when people dive into water.

Let's get experimenting.

We know that you both can swim,

so we've come to this diving pool to get you to jump in.

This is much deeper than a normal pool,

so you won't hit the bottom when you jump in.

Nina's right - you should always make sure

you know a pool is deep enough before you jump in.

And you should never jump into water without an adult to look after you.

We also have our lovely lifeguard Scott here

to make sure you're extra safe. Say hello to Scott.

Hello!

Right. Let's see what kind of splashes your bodies can make.

Murray, I'd like you to jump in, keeping your arms out straight

and your legs in a big, wide, stepping shape, OK?

Zak, I want you to watch the splash carefully, OK?

One, two, three. Jump!

SPLASH!

NINA LAUGHS

-BELLE:

-That was a huge splash!

OLLIE: I hope they didn't get too much water up their nose.

Zak, was that a big splash or a small splash?

-A big splash.

-Certainly was - we nearly got soaked!

OK. This time, I want you to keep your body as straight as possible.

Zak, I want you to watch the splash.

Tell me if it's bigger or smaller than the last one.

One, two, three. Jump!

-SPLASH!

-Oh!

NINA LAUGHS

-FELIX:

-That certainly felt less splashy.

Nina didn't get wet this time.

-What did you think of that splash?

-It was much smaller, Nina.

Yes, it was, wasn't it?

Let's swap you guys over. We'll try the experiment again

and see if we get the same results.

SPLASH!

Jump!

SPLASH!

Brilliant, experimenters! We got the same result both times.

So, keeping our bodies straight when we jump into water

makes a smaller splash.

Is this the same for a high diver, too? Hm...come with me.

Have a look up there.

Grace is going to do a high dive for us.

I've set up this special camera

so we can film the dive and see the splash.

But I want you guys to listen out for the sound the splash makes.

OK? OK, Grace. Off you go!

SPLASH!

Ho-ho!

-Wow, that was amazing, wasn't it?

-Yes!

-Yes!

And did you hear it?

It wasn't much of a splash.

Hm...let's take a closer look at it as well.

Let's have a look here.

You're right, experimenters. There was hardly any splash.

Well done, Grace. Top marks!

What do you notice about the shape of her body going into the water?

-It's straight.

-Yes, her body is very straight - like this.

This makes less splash, like when you jumped into the pool earlier.

Remember, it takes divers a long time to learn how to do this,

so you should never try diving or jumping into water on your own.

-LUKE:

-Why is Grace holding her hands flat on the way into the water?

Well spotted, Luke.

Grace had her hands held flat in a special way.

Maybe this has something to do with making a smaller splash.

Let's go back for a final experiment.

I've got two different blocks here.

One is flat at the bottom,

like the flat hands Grace used when she dived,

and this one is pointy,

like a diver pointing their hands down like this.

The blocks are going to drop

straight down into this tank of water

and I want you guys to look carefully

at the surface of the water - the very top of the water here -

and watch what happens with each splash, OK?

Hee-hee!

We'll drop the pointy block first.

Here we go.

SPLASH!

NINA LAUGHS

-Yee-hah!

-How splashy was that?

-Really splashy.

-It was! I think I need a towel.

Let's drop the flat block now.

-GLUG!

-Ho-ho-ho!

What about that splash?

That was a smaller splash.

It was. To find out why, let's have another look at it.

I was filming those splashes with my special camera again.

This way, boys.

When something is dropped into water,

it pushes some of the water up and out of the way, making a splash.

So when the pointy block hit the water,

lots of water escaped really easily up the sides of the pointy shape,

making a BIG splash.

But when our flat block was dropped into the water,

it made a smaller splash

because instead of letting the water escape up and out,

it pushed the water down with it.

High divers don't want to make a big splash

because they lose points.

So they don't use pointy hands - they use flat hands instead.

That means they push the water down in front of them

so it doesn't splash up.

So, your question was, "How do high divers make such a small splash?"

I think we've answered it.

-BELLE:

-Objects that are different shapes and sizes

make different size splashes and different sounds.

-LUKE:

-By keeping their bodies really straight,

high divers can make a smaller splash

when diving into the water.

FELIX: When something is dropped into water,

it has to get out of the way.

Most of the time, it splashes up.

-OLLIE:

-They hold their hands flat when diving to push the water down

so it doesn't splash up.

I hope that's answered your question.

BOTH: Thanks, Nina. Bye!

You're welcome. Bye!

If you want to know more about the science all around us,

go to the Nina section on the CBeebies website. Have fun!

ALL: On your marks, get set...

GO!

# Get sporty

# Dooby, dooby, doop, doop Dooby, dee, doo

# Get sporty

# Dooby, dooby, doop, doop Dooby, dee, doo

# If you're itching for some exercise

-# From your head down to your toes

-Toes!

# Why not try out something new?

-# And give it a real go?

-Go!

# Whenever you are restless

-# And feeling kind of bored

-Bored...

# Grab your friends and go outside and try a brand-new sport

# Get sporty

# Dooby, dooby, doop, doop Dooby, dee, doo

# Get sporty

# Dooby, dooby, doop, doop Dooby, dee, doo

# Spinning, throwing, running jumping, lots of fun to do

# Cycling, diving, sliding, rolling It's really up to you

# Yoo-hoo!

# If you're wondering how a swimmer swims or a bike can go so fast

# Give it a bash and make it last It's time to go get sporty

# Get sporty

# Dooby, dooby, doop, doop Dooby, dee, doo

# Get sporty

# Dooby, dooby, doop, doop Dooby, dee, doo

# Get sporty

# Dooby, dooby, doop, doop Dooby, dee, doo

# Get sporty

# Dooby, dooby, doop, doop Dooby, dee, doo. #

# Nina and the Neurons... #

Remember, whether it's inside, outside, on a bike or in a pool,

we can all try something new and get sporty.

See you again soon. Bye!

ALL: Bye!