Noisy Foods 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! #

Oh, hello!

I'm just trying to fix my alarm clock.

It didn't go off this morning and I was late getting to the lab.

-BELL RINGS

-Oh, oh, er...

it'll definitely wake me up now!

-BEEPING

-Oh, 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.

Why is some food so noisy?

That's a good really question.

Why is some food so noisy? Normally,

we just think about the taste of food, not the sound it makes.

Why not come to the lab and we'll do some experiments to investigate.

-ALL: OK, see you soon, Nina, bye!

-Bye!

I'll need 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, why is some food so noisy?

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 Belle.

Go, Belle, go Belle!

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

Go, Belle! Go, Belle!

Brilliant! I'm all ears, Nina.

Today's question is, why are some foods so noisy?

And because noises are something we hear,

Belle, our hearing neuron, will help us today.

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

Emma loves her baby brother.

Bronwyn loves rainbows.

And Gemma loves cheerleading.

They all want to know about noisy food.

So today, for one day only, Emma, Bronwyn and Gemma

become the experimenters!

ALL: Hi, Nina!

Welcome to my lab. Come in.

You asked, "Why is some food so noisy?"

Why do you want to know?

Because when you eat some foods, they're really noisy.

And you can't eat them quietly, even if you try.

You're right, some food IS really noisy.

It's time for our first experiment and we're going to use our senses.

Woo-hoo! A senses experiment! We're ready, Nina.

In these bowls we have some yummy foods

and we're going to eat a bit of each of them

and listen to hear if they're noisy or not.

Brilliant! The very first experiment and there's lots of food to taste!

So let's all have a piece of cheese.

Is it a noisy food?

-ALL: No.

-No.

We can't hear the cheese when we eat it.

Now, what about the carrot?

OK.

CRUNCH! Oh, I can hear that!

It's noisy.

It is a bit, Belle. So, what sound does the carrot make?

-ALL: It's crunchy.

-Yeah,

you have to really bite hard with your teeth to eat it.

Now, I wonder if the banana is the same.

Mmm.

That's very easy to eat, isn't it?

It's a bit gooey.

Yeah! And it doesn't make a sound.

OK, now the crisps. Let's all try one.

-CRUNCH!

-They are the noisiest of all!

Yeah.

The noisy foods, like the crisps and the carrot,

feel hard, and the quiet foods - the cheese and the banana - feel soft.

But what causes noisy food to make a racket?

-I think it's time for another experiment!

-ALL: Yay!

So, we're now going to take

some of the noisy and quiet foods that we tasted

and see what happens when we break them.

OK, first up is one of our soft, quiet foods - the yummy banana.

-Did the banana make a noise?

-ALL: No.

No. It just sort of fell apart, and didn't make a sound.

OK. Well, let's see what happens

when we try and break one of our hard, noisy foods -

the crisp.

CRACK!

Oh!

So what happened?

-It snapped.

-And it made a cracking sound.

Ooh... I wonder if noisy foods

make a noise because they're hard and they snap. Look at this...

They're both about the same shape and size

but you can feel that this one is made of something hard -

this is made of plastic -

and this one here is made of something soft. Modelling clay.

Now, if I try to snap the soft modelling clay...

Oh. It just bends.

And...I can pull it apart.

-And did you hear any noise?

-ALL: No.

No. OK, well, let's see what happens

if I try to break the hard plastic one.

-SNAP!

-Oh!

-SHE LAUGHS

-What did you hear?

-ALL: A snapping noise.

-Yeah!

When hard things break, they make a sudden snapping noise,

and when we bite or chew food, we break it into pieces with our teeth,

and that makes lots of little snaps,

and this is the snapping noise you hear.

So, noisy foods are noisy because they're hard and crunchy,

but why are they like this?

To find out, why don't we go somewhere and get a bit messy?

ALL: Yeah!

Hmm! Where do you think we're going today?

Nina said we were going somewhere to get messy.

I hope it's really messy! Getting messy is fun!

Look! I think we're here.

Oh! She's using her hands to make the clay into a shape.

That was amazing, Hannah!

Thanks, Nina. Would you like a go?

Oh, yes, please!

Ha-ha-ha! They're getting into a right mess.

What IS Nina making?

THEY LAUGH

-Our pots don't look very pot-like, do they?

-No.

They're all soft and wet and squidgy.

But these pots - they're not soft, are they?

No, Nina, they're hard.

That's because they've been dried out in a special oven called a kiln.

The hot kiln makes the water inside the wet clay come out,

and when you take water out of something,

we say it's dehydrated.

We what, Nina?

Dehydrated, Bud, and when things become dehydrated,

they often go hard, like this.

We know that banana's usually soft and quiet to eat

but just like clay, they have water inside them,

so when they're dried out, they become hard and crunchy

and very noisy, like this.

CRUNCH!

Are all noisy foods dehydrated, Nina?

No, they're not.

Dried banana and crisps are very different

from foods like raw carrot and apples.

These are not dehydrated. They're just naturally hard and crunchy.

But we need to go back to the lab for one final experiment.

ALL: Yeah!

Now, you asked, "Why is some food so noisy?"

We've discovered that noisy foods are noisy because

they are hard. Some foods, like apples and carrots

are naturally hard and noisy to eat.

Other foods, like bananas,

start out soft and only become hard and noisy

when they've been dried out, or dehydrated.

So, if some quiet foods can be made to be noisy,

is there any way of making noisy foods quiet?

-Let's get experimenting!

-Yeah!

In front of you, you each have some noisy food,

but not much, because it's not good to waste food.

Emma, you have some crisps.

Bronwyn, you've got some popcorn.

Gemma, you've got some broken-up cracker biscuit.

You should all have a nibble to make sure they're still noisy,

for science reasons only, of course.

CRUNCH!

Yep! I can definitely hear that, Nina.

Now you're going to pour a little bit of warm water

on top of your food sample.

Ooh! That's going all soggy.

And now for our final taste test.

Let's see if you've made the noisy food quiet.

Ugh! That's horrible!

Well, they're not noisy any more, but they aren't very nice, are they?

ALL: No!

They're yucky and soggy.

Yes! So we CAN make noisy foods quiet.

When some noisy, hard foods get wet,

they become soft, and that means they're not so noisy any more,

but they might not be very nice to eat.

# Nina and the Neurons! #

So your question was, "Why is some food so noisy?"

I think we've answered it. First, we used our senses

to discover that noisy foods feel hard

and quiet foods feel soft

and hard foods always break with a snapping noise.

While some foods like apples are naturally hard and noisy,

others start soft and become hard and noisy when they're dried out.

So I hope that's answered your question!

Thanks, Nina! Bye!

If you want to more about the sciences all around us,

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

Lab coat on, Nina?

Lab coat on, Ollie.

Safety gloves on, Nina?

Safety gloves on, Felix.

-Don't forget your goggles, Nina.

-Goggles are on, Luke.

I think we're ready!

# We do experiments in the lab

-# In the lab!

-Shooby-dooby, in the lab

# Bubbling experiments in the lab

# In the lab!

# Go, Nina, in the lab

# Fizzing and popping Steam and smoke

# We need protection Don't we, folks?

# We always put our safety first

# Shooby-dooby, dooby-dooby

# We do experiments in the lab

# In the lab!

# Go, Nina! #

Oh, I've had a brilliant day!

So many sounds! Snap! Crunch! Munch!

It's been a marvellous day. Lots of hard and soft foods to feel.

I've had a fabbie day!

Everything tasted yummy!

Until the soggy food at the end - yeuch!

Our day's been bursting with sensational experiments.

I hope you've enjoyed it. Bye!

ALL: Bye!