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# If you've got a question and you don't know where to go | 0:00:05 | 0:00:08 | |
# Ask Nina for some help Cos she's got a science show | 0:00:08 | 0:00:11 | |
# She makes sense of her senses While helping all her fans | 0:00:11 | 0:00:14 | |
# By doing her experiments with potions and with bangs | 0:00:14 | 0:00:17 | |
-# Touch your tongue -Tongue! | 0:00:17 | 0:00:19 | |
-# Fingers -Fingers! | 0:00:19 | 0:00:21 | |
-# Eyes. -Eyes! -Ears. -Ears! -Nose. -Nose! | 0:00:21 | 0:00:23 | |
# Nina and the Neurons find out what you need to know | 0:00:23 | 0:00:26 | |
# Nina and the Neurons find out what you need to know | 0:00:26 | 0:00:29 | |
# Luke, he helps us with our eyes and Felix with our touch | 0:00:29 | 0:00:32 | |
# Ollie sniffs out smells And Belle, she hears so much | 0:00:32 | 0:00:35 | |
# Bud is Ollie's brother He helps us with our taste | 0:00:35 | 0:00:38 | |
# They're Nina's little Neurons And they're coming to your place! | 0:00:38 | 0:00:41 | |
-# Touch your tongue -Tongue! | 0:00:41 | 0:00:43 | |
-# Fingers -Fingers! | 0:00:43 | 0:00:44 | |
-# Eyes. -Eyes! -Ears. -Ears! -Nose. -Nose! | 0:00:44 | 0:00:47 | |
# Nina and the Neurons find out what you need to know | 0:00:47 | 0:00:50 | |
# Nina and the Neurons find out what you need to know | 0:00:50 | 0:00:53 | |
# Oh yeah! # | 0:00:53 | 0:00:54 | |
Oh, hello! | 0:00:58 | 0:00:59 | |
Have you ever tried this bubble experiment before? It's great fun. | 0:00:59 | 0:01:04 | |
You get a really good soapy lather | 0:01:04 | 0:01:07 | |
and make a circle with your fingers and gently blow. | 0:01:07 | 0:01:11 | |
Ha-ha! Bubble-tastic! | 0:01:12 | 0:01:15 | |
BEEP! BEEP! | 0:01:15 | 0:01:17 | |
I hear a beep, I see a flash, I wonder what they're going to ask. | 0:01:17 | 0:01:21 | |
ALL: Hi, Nina! | 0:01:25 | 0:01:27 | |
Hi, guys. | 0:01:27 | 0:01:28 | |
We've got a question. | 0:01:28 | 0:01:30 | |
Why do we have to use soap? | 0:01:30 | 0:01:32 | |
That's a brilliant question. Why do we have to use soap? | 0:01:32 | 0:01:36 | |
Why not come to my lab and we'll do some experiments to investigate? | 0:01:36 | 0:01:40 | |
ALL: See you soon, Nina. | 0:01:40 | 0:01:42 | |
Bye! | 0:01:42 | 0:01:44 | |
I'll need help to answer this and I know just who to ask. | 0:01:44 | 0:01:48 | |
OK, Neurons, time to get to work. | 0:01:48 | 0:01:50 | |
ALL: Neurons at the ready, Nina. | 0:02:07 | 0:02:09 | |
Today's question is, why do we have to use soap? | 0:02:09 | 0:02:13 | |
Which Neuron will be most useful in helping us find the answer? | 0:02:13 | 0:02:18 | |
-Me, me! -Oh, me! -Me! | 0:02:18 | 0:02:20 | |
Will it be fabulous Felix? | 0:02:20 | 0:02:22 | |
I can help so very much | 0:02:22 | 0:02:24 | |
if you need the sense of touch. | 0:02:24 | 0:02:26 | |
Will it be beautiful Belle? | 0:02:26 | 0:02:28 | |
I send messages to brain from ear. | 0:02:28 | 0:02:30 | |
If there's a sound, I'll help you hear. | 0:02:30 | 0:02:33 | |
Will it be lovely Luke? | 0:02:33 | 0:02:35 | |
Looking and seeing, day or night, | 0:02:35 | 0:02:37 | |
I'll help you with your sense of sight. | 0:02:37 | 0:02:40 | |
Will it be awesome Ollie? | 0:02:40 | 0:02:42 | |
If it's pongy, but you can't tell, | 0:02:42 | 0:02:44 | |
my messages help your sense of smell. | 0:02:44 | 0:02:46 | |
Or will it be baby Bud? | 0:02:46 | 0:02:48 | |
Sour, salty, bitter or sweet, | 0:02:48 | 0:02:50 | |
I'm your taste buddy whenever you eat. | 0:02:50 | 0:02:53 | |
It's Felix! | 0:02:56 | 0:02:58 | |
CHEERING | 0:02:58 | 0:03:00 | |
Go, Felix! Go, Felix! | 0:03:00 | 0:03:02 | |
Go, Felix! Go, Felix! Go, Felix! | 0:03:02 | 0:03:05 | |
Go, Felix! Go, Felix! | 0:03:05 | 0:03:07 | |
Marvellous! A little touch can mean so much, Nina. | 0:03:07 | 0:03:12 | |
Today's question is why do we have to use soap? | 0:03:12 | 0:03:14 | |
To use soap we have to touch it, | 0:03:14 | 0:03:17 | |
so Felix, our touch Neuron, will be helping me today. | 0:03:17 | 0:03:20 | |
Right, I need to get the lab ready before the experimenters arrive. | 0:03:20 | 0:03:24 | |
Vidhi likes making people laugh, | 0:03:26 | 0:03:27 | |
Morven loves singing and Tia loves dancing. | 0:03:27 | 0:03:30 | |
But they all want to know why we have to use soap. | 0:03:30 | 0:03:34 | |
So today, for one day only, | 0:03:34 | 0:03:36 | |
Vidhi, Morven and Tia become The Experimenters! | 0:03:36 | 0:03:39 | |
-Hi, Nina! -Come in, come in. Welcome to my science lab. | 0:03:41 | 0:03:46 | |
Now, you asked why do we have to use soap, but why do you want to know? | 0:03:46 | 0:03:52 | |
Cos every time my mummy asks me to wash my hands, | 0:03:52 | 0:03:54 | |
she always tells me to use soap. | 0:03:54 | 0:03:56 | |
And we want to know why. | 0:03:56 | 0:03:59 | |
Ah, well, I always use soap when I wash my hands, | 0:03:59 | 0:04:02 | |
but I've never really thought why. | 0:04:02 | 0:04:04 | |
This is a great question, | 0:04:04 | 0:04:05 | |
so for our first experiment, we're going to use our senses. | 0:04:05 | 0:04:09 | |
ALL: Woot-woo, a senses experiment! We're ready, Nina! | 0:04:09 | 0:04:14 | |
As you can see, soap comes in lots of different shapes and sizes. | 0:04:14 | 0:04:18 | |
This bar of soap's quite hard, | 0:04:18 | 0:04:20 | |
when would you use a bar of soap like this? | 0:04:20 | 0:04:23 | |
-Bath. -When you have a bath. | 0:04:23 | 0:04:25 | |
-What about this liquid soap in the pump dispenser? -Hands! | 0:04:25 | 0:04:29 | |
Here's some shampoo, that's soap we use to wash our hair. | 0:04:29 | 0:04:32 | |
So we use different types of soap for different reasons. | 0:04:32 | 0:04:36 | |
But why do we have to use it? | 0:04:36 | 0:04:39 | |
OK, guys, now I've put some cooking oil onto these plates. | 0:04:39 | 0:04:43 | |
So let's put our hand in it. Hee-hee! | 0:04:43 | 0:04:46 | |
-Yuck! -Now let's rub our hands together. | 0:04:48 | 0:04:51 | |
-Eww! -What does it feel like? | 0:04:53 | 0:04:55 | |
-Slimy. -It's slimy! | 0:04:55 | 0:04:57 | |
Ew, your hands do feel greasy. | 0:04:57 | 0:05:01 | |
Don't worry, Felix, it won't be for long. | 0:05:01 | 0:05:04 | |
OK, guys, let's go and wash our hands in just water. | 0:05:04 | 0:05:08 | |
It's not washing, it still feels slimy. | 0:05:10 | 0:05:13 | |
Slime! | 0:05:13 | 0:05:14 | |
So even though we used the water, our hands are still covered in oil. | 0:05:14 | 0:05:19 | |
That's because oil doesn't mix with water. | 0:05:19 | 0:05:22 | |
So we need to wash our hands again and this time we can use some soap. | 0:05:22 | 0:05:27 | |
You hold your hands out and I'll give you some soap. There you go. | 0:05:27 | 0:05:32 | |
Rub those hands together. | 0:05:32 | 0:05:34 | |
Ah, the liquid soap has created lots of white foamy lather. | 0:05:35 | 0:05:40 | |
-OK, let's give them a good rinse under the tap. -Under the tap. | 0:05:40 | 0:05:44 | |
Yeah, rinse them. | 0:05:44 | 0:05:47 | |
That's mine done. | 0:05:47 | 0:05:48 | |
OK, so let's see your hands now. | 0:05:48 | 0:05:51 | |
-No oily. They don't feel slimy or anything. -Brilliant! | 0:05:51 | 0:05:56 | |
That experiment has shown us that washing our hands | 0:05:56 | 0:05:59 | |
with just water doesn't get rid of oil. | 0:05:59 | 0:06:01 | |
But when we add soap, it makes a foamy lather | 0:06:01 | 0:06:05 | |
and gets rid of the grease. But how does that happen? | 0:06:05 | 0:06:09 | |
It's time for another experiment. | 0:06:09 | 0:06:11 | |
Now this is a beaker of water with some food colouring added | 0:06:12 | 0:06:16 | |
to help us see it. I'm going to add it into this jar of oil. | 0:06:16 | 0:06:21 | |
Now I'm going to give it a really good shake. | 0:06:24 | 0:06:29 | |
WATER SLOSHES | 0:06:29 | 0:06:30 | |
Great sploshing noise, Nina! | 0:06:30 | 0:06:33 | |
Splosh, slush, slush... | 0:06:33 | 0:06:36 | |
Let's have a look. | 0:06:36 | 0:06:37 | |
-So, what can you see happening? -It's getting blue at the bottom. | 0:06:39 | 0:06:43 | |
Yeah, it's going stripy. | 0:06:43 | 0:06:45 | |
And remember, the water is blue and the oil is yellow. | 0:06:45 | 0:06:49 | |
Do you see the oil has risen to the top? | 0:06:49 | 0:06:52 | |
Next, watch what happens if I mix oil with liquid soap. | 0:06:52 | 0:06:57 | |
And once again I'll give it a good shake. | 0:07:00 | 0:07:03 | |
That's turning green! | 0:07:06 | 0:07:07 | |
-What can you see now? -They're mixed. | 0:07:07 | 0:07:10 | |
That's right, they're mixed together. | 0:07:10 | 0:07:12 | |
So the oil didn't mix with the water | 0:07:12 | 0:07:14 | |
but it did mix with the liquid soap. Let's see what happens | 0:07:14 | 0:07:19 | |
if we add the coloured water this time. | 0:07:19 | 0:07:21 | |
(They'll mix.) | 0:07:24 | 0:07:27 | |
And give them a good mix. | 0:07:27 | 0:07:30 | |
What's happened? | 0:07:34 | 0:07:36 | |
-They're blue now. -Yes, | 0:07:36 | 0:07:38 | |
although oil and water can't mix together on their own, | 0:07:38 | 0:07:41 | |
they can both mix with soap. So the soap mixes with the oil | 0:07:41 | 0:07:45 | |
and the water, and allows the oil and water to mix together, too! | 0:07:45 | 0:07:49 | |
Aw! It's like the soap's helped them to be friends! | 0:07:49 | 0:07:53 | |
That's a nice way of putting it, Ollie! | 0:07:53 | 0:07:55 | |
In science, when two things that normally don't mix together | 0:07:55 | 0:07:59 | |
are helped to mix by something else, | 0:07:59 | 0:08:01 | |
the new mixture is called an emulsion. | 0:08:01 | 0:08:04 | |
To find out more, we're going to see a place | 0:08:04 | 0:08:07 | |
where they make something very tasty! Let's go, experimenters! | 0:08:07 | 0:08:11 | |
Off we go for another adventure! | 0:08:16 | 0:08:19 | |
Nina said there would be tasty treats! | 0:08:19 | 0:08:21 | |
I hope it's sausages or bananas or grapes or melons or... | 0:08:21 | 0:08:25 | |
Nina said it's somewhere that makes tasty treats. | 0:08:25 | 0:08:29 | |
Oh, creamy, milky smells! | 0:08:49 | 0:08:52 | |
It's a dairy! | 0:08:52 | 0:08:55 | |
We're here to find out more about how an emulsion is formed. | 0:08:55 | 0:08:58 | |
The milk from these lovely cows is going to be made | 0:08:58 | 0:09:02 | |
-into ice cream! -Whee! | 0:09:02 | 0:09:05 | |
And ice cream is an emulsion. | 0:09:05 | 0:09:07 | |
Ice cream?! Aya-a-a-ah! | 0:09:07 | 0:09:12 | |
There are lots of ingredients in ice cream, | 0:09:16 | 0:09:19 | |
like milk, cream and egg yolk. | 0:09:19 | 0:09:22 | |
The egg helps all of the ingredients to make friends. | 0:09:22 | 0:09:27 | |
And these machines are really important. | 0:09:28 | 0:09:32 | |
The ice cream won't form until all the ingredients | 0:09:32 | 0:09:35 | |
are mixed together really well. It's just like when I added the soap | 0:09:35 | 0:09:39 | |
to the oil and water earlier. It wasn't until I shook the jar | 0:09:39 | 0:09:43 | |
and mixed them really well that they formed an emulsion. | 0:09:43 | 0:09:47 | |
Nina, can you please, please, please taste the ice cream now?! | 0:09:47 | 0:09:52 | |
With pleasure, Bud! | 0:09:52 | 0:09:54 | |
Yes! | 0:09:54 | 0:09:55 | |
Mmm! | 0:09:57 | 0:09:59 | |
So, as I was saying, | 0:09:59 | 0:10:00 | |
it's all the whipping and mixing that helps to make the ice cream. | 0:10:00 | 0:10:04 | |
But what does that tell us about soap? | 0:10:04 | 0:10:07 | |
We need to go back to the lab for one final experiment. | 0:10:07 | 0:10:09 | |
Your question was, "Why do we have to use soap?" | 0:10:12 | 0:10:14 | |
There's one more experiment left to answer this question. | 0:10:14 | 0:10:18 | |
-Let's get experimenting. -ALL: Yeah! | 0:10:18 | 0:10:22 | |
Can I ask you to dip one hand into your paint? | 0:10:22 | 0:10:26 | |
That's it. And then... | 0:10:26 | 0:10:30 | |
press them on to the paper and make hand prints. | 0:10:30 | 0:10:33 | |
Next, you're going to wash your hands | 0:10:40 | 0:10:43 | |
in a sink that's got soapy water in it. | 0:10:43 | 0:10:46 | |
I want you just to dip your hand in, no rubbing. | 0:10:46 | 0:10:50 | |
Dipping your hands in, no rubbing. | 0:10:53 | 0:10:57 | |
Now take you your hands out, no rubbing, | 0:10:58 | 0:11:00 | |
and we'll just rinse them under this tap. | 0:11:00 | 0:11:03 | |
OK, that's good. | 0:11:03 | 0:11:06 | |
Now let's dry your hands. There's a towel for you, Morven. | 0:11:09 | 0:11:13 | |
Tia. And for yourself, Vidhi. | 0:11:13 | 0:11:17 | |
I can see all blue on the towel. | 0:11:17 | 0:11:20 | |
Oh, the towels are going all blue! | 0:11:20 | 0:11:22 | |
Oh dear, their hands are still covered in paint! | 0:11:22 | 0:11:26 | |
So what do you notice? | 0:11:26 | 0:11:27 | |
The paint's not washed off. | 0:11:27 | 0:11:29 | |
Don't worry, this experiment isn't over yet. | 0:11:29 | 0:11:32 | |
Put your hands back in the water | 0:11:32 | 0:11:34 | |
and this time you can rub your hands together. | 0:11:34 | 0:11:37 | |
That's it, make lots of bubbles. | 0:11:37 | 0:11:40 | |
Lovely. OK, now take your hands out. | 0:11:43 | 0:11:45 | |
Now, I've got some towels here. | 0:11:45 | 0:11:48 | |
Let's just dry our hands. | 0:11:48 | 0:11:50 | |
Super. What do we notice about our hands now? | 0:11:50 | 0:11:54 | |
They're all clean. | 0:11:54 | 0:11:55 | |
They're lovely and clean. | 0:11:55 | 0:11:58 | |
That experiment has shown us | 0:11:58 | 0:12:00 | |
that soapy water alone wasn't enough to remove the paint from your hands | 0:12:00 | 0:12:04 | |
because there was no foamy lather. | 0:12:04 | 0:12:07 | |
But when you rubbed your hands in the water, | 0:12:07 | 0:12:09 | |
the soap and the water and the paint mixed together to create an emulsion | 0:12:09 | 0:12:14 | |
and the paint washed away. | 0:12:14 | 0:12:16 | |
Your question was, "Why do we have to use soap?" | 0:12:18 | 0:12:21 | |
And I think we've answered it. | 0:12:21 | 0:12:23 | |
We use soap because when we rub it to create an emulsion, | 0:12:23 | 0:12:26 | |
it helps us get rid of oily, greasy dirt and germs | 0:12:26 | 0:12:30 | |
that won't come off with water alone. | 0:12:30 | 0:12:32 | |
I hope that's answered your question. | 0:12:32 | 0:12:34 | |
ALL: Thanks, Nina, bye. | 0:12:34 | 0:12:37 | |
Bye! | 0:12:37 | 0:12:39 | |
If you want to know more about the science that's all around us, | 0:12:42 | 0:12:45 | |
go to the Nina section on the CBeebies website. Have fun! | 0:12:45 | 0:12:49 | |
Lab coat on, Nina? | 0:12:53 | 0:12:54 | |
Lab coat on, Ollie. | 0:12:54 | 0:12:56 | |
Safety gloves on, Nina? | 0:12:56 | 0:12:58 | |
Safety gloves on, Felix. | 0:12:58 | 0:13:00 | |
And don't forget your goggles, Nina. | 0:13:00 | 0:13:02 | |
Goggles are on, Luke. | 0:13:02 | 0:13:04 | |
I think we're ready! | 0:13:04 | 0:13:06 | |
# We do experiments in the lab | 0:13:07 | 0:13:09 | |
# In the lab Shooby-dooby, in the lab | 0:13:09 | 0:13:13 | |
# Bubbling experiments in the lab | 0:13:13 | 0:13:15 | |
# In the lab Go, Nina, in the lab | 0:13:15 | 0:13:19 | |
# Hissing and popping Steam and smoke | 0:13:19 | 0:13:21 | |
# We need protection Don't we, folks? | 0:13:22 | 0:13:25 | |
# We always put our safety first | 0:13:25 | 0:13:29 | |
# Shooby-dooby-dooby-dooby | 0:13:29 | 0:13:31 | |
# We do experiments in the lab | 0:13:31 | 0:13:33 | |
# In the lab Go, Nina! # | 0:13:33 | 0:13:36 | |
It's been a marvellous day, | 0:13:36 | 0:13:38 | |
lots of touchy-feely hands on experiments. | 0:13:38 | 0:13:41 | |
I've had a brilliant day. | 0:13:41 | 0:13:43 | |
Nina used the soap to make the oil and water be friends. | 0:13:43 | 0:13:47 | |
I've had a fabby day! | 0:13:47 | 0:13:49 | |
Ice cream, ice cream, ice cream, ice cream! | 0:13:49 | 0:13:54 | |
Our day's been bursting with sensational experiments. | 0:13:54 | 0:13:57 | |
I hope you've enjoyed it. Bye! | 0:13:57 | 0:13:59 | |
ALL: Bye! | 0:13:59 | 0:14:01 | |
Subtitles by Red Bee Media Ltd | 0:14:01 | 0:14:04 |