Wobbly Jelly 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! #

Hello, there!

I'm trying to get this piece of paper into the bin

using a stretchy rubber band!

Oh! There seems to be something wrong with it.

-BLEEPING

-Oh, I hear a beep, I see a flash,

I wonder what they're going to ask?

BOTH: Hi, Nina!

Hello!

-We've got a question for you.

-Why does jelly wobble?

Oh, what a great question! Why does jelly wobble?

Why don't you come down to my lab and we'll do some experiments?

BOTH: See you soon, Nina!

Bye!

I'll 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, why does jelly wobble?

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 when you eat!

It's Bud and Ollie!

ALL: Go, Ollie! Go, Bud!

Go, Ollie! Go, Bud! Go, Ollie! Go, Bud!

Yippee! It's you and me, sis!

Stand by for a taste and smell-athon.

Today's question is why does jelly wobble?

Jelly is a food and Bud and Ollie

are the neurons that help us smell and taste food.

I'll get the lab ready before the experimenters arrive.

Lydia likes going to Brownies. Her best friend, Mo, loves oranges.

They both want to find out why jelly wobbles.

Today, for one day only, Lydia and Mo become the experimenters!

-BOTH: Hi, Nina!

-Welcome to my lab! Come in.

It's lovely to see you both. So your question is why does jelly wobble?

-Why do you want to know?

-I like jelly, but it wobbles off my spoon!

It is strange. I can't think of many foods that wobble, can you?

BOTH: No, Nina.

I can't either and I know a lot about food!

You certainly do, Bud. We need to do some investigating.

For our first experiment, we're going to use our senses.

ALL: Woop-woo! A senses experiment. We're ready, Nina!

Here we have a lovely jelly. So, let's see it wobble.

Ooh-ooh-ooh!

THEY LAUGH

Whoa! Wobbling is so much fun!

Do you think you could tell if it was wobbling if you couldn't see it?

Not sure.

Well. Can you pop the blindfolds on for me, please?

Excellent.

Now, Lydia, there's something in front of you.

I'd like you to touch it and tell me what it feels like.

Hard.

-Do you think it's jelly?

-No.

Now, Mo, there's something in the bowl in front of you.

Can you tell me what it feels like?

-Water.

-Ah, so it's too runny to be jelly?

OK. And...

Lydia, there's something else here. Have a feel.

-Jelly!

-Jelly! Now, take your blindfolds off.

Now, let's all try feeling the jelly.

Ooh!

Urgh!

Ooh, it feels very strange.

Squashy like rubber, but very sticky.

So, this experiment has shown us that jelly isn't hard

and it also isn't runny, like water.

It's in between. I think we need to do another experiment.

So, for this experiment, I'm going to pour some ordinary water in here.

-And now I'm going to turn it upside down over one of your heads.

-What?!

-Who would like to volunteer?

-Hm!

-Hm!

Oh, come on, someone's got to volunteer,

or we can't do the experiment.

-I'll do it.

-Oh, well done, Mo!

OK. Step over here into my paddling pool.

What's Nina doing?! Mo is going to get all wet.

Here we go!

Oh!

-Oh, that's odd!

-You poured water in there, though.

Give it a shake.

Oh!

Look at this weird stuff here.

It feels rubbery and a bit like jelly.

-And gooey.

-Let me tell you a secret. Let's go back over here.

There wasn't just water in the beaker.

There was some of this stuff in the bottom too.

This is a special substance called a polymer.

A poly-what?!

A polymer, Bud. There are lots of different polymers.

But, when we add water to this polymer...

..it makes the water go all rubbery.

And jelly starts off as water too.

Then you add a special food polymer and that makes it go all wobbly.

-How does it make it wobbly, Nina?

-That's a great question, Lydia!

I know a really colourful place that might help answer it. Let's go!

Here we go! I can't wait to see where we'll end up today!

-Nina said it's somewhere really colourful.

-That sounds lovely!

-Maybe we'll find a rainbow?

-A rainbow! With a pot of gold?

Wow! It sure is colourful in here.

I've brought you to this bead shop to do an experiment.

First, you need to collect lots of beads.

OK, let's imagine that these beads are a bit like water.

Water is made of lots of tiny things called molecules,

a bit like beads. And because water molecules are not joined together,

they can move about freely and pour like this.

Oh, what a brilliant noise the beads make!

Now, let's see what happens if we tip the tray.

They're rolling and flowing about, a bit like water.

This string is a bit like a polymer.

We're going to use it to show us how the jelly polymer works.

Those beads are quite fiddly to string.

What a great job they're doing!

So, the beads are all joined together by the string.

I'm going to put them back into this jug.

So, let's see what happens when we pour them this time.

They're all sticking together.

Yes! The string is holding the beads together.

This is what the jelly polymer does too.

The molecules are the same, they're just joined together.

Let's go back to the lab for one more experiment.

We're going to make our very own jellies.

This powder is a special polymer that's used to make jelly.

This powder is safe to eat,

but there are lots that can make you ill,

so never eat things unless you know what they are and that they're safe.

I have given each of us different amounts of the jelly polymer.

We're going to mix it with exactly the same amount of water.

The water's hot, so we're all wearing our protective gloves!

Hot water can burn, you know.

OK, Lydia. Would you say you've got more or less powder than I have?

-More.

-You're right! You've got twice as much.

Mo, how much powder have you got?

Lots more than both of you.

You've actually got ten times more than I have,

-so that jelly will definitely not be for eating.

-Wowee!

Will that make the jelly w-w-w-w-obbly?

OK, pour your powder in.

Give it a good stir.

Excellent stirring, girls, excellent stirring.

I'll pour these hot jelly mixtures into the moulds for all of us,

as it's not safe to do so on your own.

We'll chill these in the fridge for a while.

We're almost ready to turn the jellies out.

I had the smallest amount of powder, so let's see how it's turned out.

Oh! Oh-hohohoh! I don't think that worked very well, did it?

-No.

-No.

Oh, well. Lydia, let's see what your jelly looks like.

Oh, now, that's what a jelly should look like!

Give it a wobble!

Wow! Look at that jelly wobble!

Mo, let's see what yours looks like.

Ooh!

It looks pretty good.

Why don't you give it a wobble?

It's too solid to wobble!

That experiment has shown us that jelly will only wobble

if it has the right mixture of water and jelly polymer.

So, your question was why does jelly wobble?

And I think we have answered it!

We found out jelly wobbles because of something called a polymer.

This polymer can make water change from runny to solid

by joining all the water molecules together like a string of beads.

But a jelly will only wobble

if it has the right mixture of water and polymer.

If it's too solid, it won't wobble, and it's too runny,

it'll just be a sloppy mess. I hope that answers your question.

BOTH: Thanks, Nina! Bye!

Bye!

If you want to know more about the science 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! #

It's been a marvellous day.

It was such fun, feeling the smooth, hard potato

and the soft, sticky jelly.

I've had a brilliant day.

When Nina played that trick with the polymer,

it made a wicked splatting noise.

I've had a fabby day!

The bestest bit was seeing the jellies wobble. Ha-ha!

Our day's been bursting with sensational experiments.

I hope you've enjoyed it. Bye!

ALL: Bye!

Subtitles by Red Bee Media Ltd

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