0:00:05 > 0:00:08# If you've got a question and you don't know where to go
0:00:08 > 0:00:11# Ask Nina for some help Cos she's got a science show
0:00:11 > 0:00:15# She makes sense of her senses While helping all her fans
0:00:15 > 0:00:17# By doing her experiments with potions and with bangs
0:00:17 > 0:00:19- # Touch your tongue - Tongue!
0:00:19 > 0:00:20- # Fingers - Fingers!
0:00:20 > 0:00:23- # Eyes.- Eyes! - Ears.- Ears!- Nose.- Nose!
0:00:23 > 0:00:26# Nina and the Neurons find out what you need to know
0:00:26 > 0:00:29# Nina and the Neurons find out what you need to know
0:00:29 > 0:00:32# Luke, he helps us with our eyes and Felix with our touch
0:00:32 > 0:00:35# Ollie sniffs out smells And Belle, she hears so much
0:00:35 > 0:00:38# Bud is Ollie's brother He helps us with our taste
0:00:38 > 0:00:41# They're Nina's little Neurons And they're coming to your place!
0:00:41 > 0:00:43- # Touch your tongue - Tongue!
0:00:43 > 0:00:44- # Fingers - Fingers!
0:00:44 > 0:00:48- # Eyes.- Eyes! - Ears.- Ears!- Nose.- Nose!
0:00:48 > 0:00:50# Nina and the Neurons find out what you need to know
0:00:50 > 0:00:53# Nina and the Neurons find out what you need to know
0:00:53 > 0:00:54# Oh, yeah! #
0:00:57 > 0:01:00Oh, hello! I'm just filling up my watering can.
0:01:00 > 0:01:04Silly me! I forgot to water my little plant.
0:01:04 > 0:01:08The soil's all dried up. It needs a drink of water.
0:01:08 > 0:01:09That's better!
0:01:09 > 0:01:11BEEPING
0:01:11 > 0:01:15I hear a beep, I see flash, I wonder what they're going to ask.
0:01:18 > 0:01:20Hi, Nina!
0:01:20 > 0:01:22Hi, guys!
0:01:22 > 0:01:24We've got a question for you.
0:01:24 > 0:01:28Why do we have to wait for our paintings to dry?
0:01:28 > 0:01:29That's a great question!
0:01:29 > 0:01:32Why do we have to wait for our paintings to dry?
0:01:32 > 0:01:34So why don't you come down to my lab
0:01:34 > 0:01:37and we'll do some experiments to investigate?
0:01:37 > 0:01:39See you soon, Nina! Bye!
0:01:39 > 0:01:41Bye!
0:01:41 > 0:01:44I'm going to need some help to answer this
0:01:44 > 0:01:48and I know just who to ask. OK, neurons, time to get to work.
0:02:04 > 0:02:06Neurons at the ready, Nina.
0:02:06 > 0:02:11Today's question is, why do we have to wait for our paintings to dry?
0:02:11 > 0:02:15Which Neuron will be most useful in helping find the answer?
0:02:15 > 0:02:17ALL: Me! Me! Me! Oh, me!
0:02:17 > 0:02:20Will it be fabulous Felix?
0:02:20 > 0:02:23I can help so very much if you need the sense of touch.
0:02:23 > 0:02:25Will it be beautiful Belle?
0:02:25 > 0:02:30I send messages to brain from ear. If there's a sound, I'll help you hear.
0:02:30 > 0:02:32Will it be lovely Luke?
0:02:32 > 0:02:34For looking and seeing, day or night,
0:02:34 > 0:02:37I'll help you with your sense of sight.
0:02:37 > 0:02:39Will it be awesome Ollie?
0:02:39 > 0:02:41If it's pongy or whiffy but you can't tell,
0:02:41 > 0:02:45- my messages help your sense of smell. - Or will it be baby Bud?
0:02:45 > 0:02:50Sour, salty, bitter or sweet, I'm your taste buddy whenever you eat!
0:02:54 > 0:02:56It's Felix!
0:02:57 > 0:03:00ALL: Go, Felix! Go, Felix! Go, Felix!
0:03:00 > 0:03:03Go, Felix! Go, Felix! Go, Felix!
0:03:03 > 0:03:04Go, Felix!
0:03:04 > 0:03:08Marvellous! A little touch can mean so much, Nina.
0:03:08 > 0:03:12Today's question is, why do we have to wait for our paintings to dry?
0:03:12 > 0:03:15We feel if something is dry or not,
0:03:15 > 0:03:18so Felix, our touch neuron, will be helping me today.
0:03:18 > 0:03:22I need to get the lab ready before the experimenters arrive!
0:03:23 > 0:03:28Tia likes skipping. Katie likes making jewellery. Lucy loves art.
0:03:28 > 0:03:31They want to know why paintings have to dry.
0:03:31 > 0:03:36Today, for one day only, Tia, Katie and Lucy become the experimenters!
0:03:38 > 0:03:40Hi, Nina!
0:03:40 > 0:03:44Welcome to my science lab! It's lovely to see you all.
0:03:44 > 0:03:49Now, you asked, why do we have to wait for our paintings to dry?
0:03:49 > 0:03:50Why do you want to know?
0:03:50 > 0:03:54- We love painting.- But we don't like waiting for them to dry.
0:03:54 > 0:03:57I know that feeling. You've painted a lovely picture
0:03:57 > 0:04:01and then you can't touch it because it's wet.
0:04:01 > 0:04:02We need to investigate.
0:04:02 > 0:04:06For our first experiment, we're going to use our senses.
0:04:06 > 0:04:09Woop-woo! A senses experiment.
0:04:09 > 0:04:13- We're ready!- You're going to make some pictures.
0:04:13 > 0:04:16Katie, you'll be using felt-tip pens,
0:04:16 > 0:04:19and Lucy, you've got runny poster paints,
0:04:19 > 0:04:22and Tia, you'll be using hard paint blocks.
0:04:22 > 0:04:24Time to get experimenting with art!
0:04:33 > 0:04:38Nina, my paint's not working. Please may I have some water?
0:04:38 > 0:04:40Oh, of course, Tia, I'm so sorry!
0:04:40 > 0:04:44Of course you'll need water. I totally forgot! There you go.
0:04:44 > 0:04:49Lucy, you don't need water, because the poster paint you're using
0:04:49 > 0:04:53is like the hard paints but already has water mixed in.
0:04:59 > 0:05:02What lovely, bright colours they're using!
0:05:02 > 0:05:05These pictures will look beautiful!
0:05:05 > 0:05:07Oh, your pictures are looking great!
0:05:07 > 0:05:10Katie, how are you finding the felt-tip pens?
0:05:10 > 0:05:12Fine, Nina.
0:05:12 > 0:05:16Good. Try touching the tip of the felt-tip pen.
0:05:16 > 0:05:18How does it feel?
0:05:18 > 0:05:20Ooh! That's tickly, Nina.
0:05:20 > 0:05:22Ooh, stop! Oh!
0:05:22 > 0:05:25It feels a little bit wet.
0:05:25 > 0:05:27The felt-tip pen feels a bit wet
0:05:27 > 0:05:31because it contains a tiny bit of water.
0:05:31 > 0:05:34What about your picture? Does it feel wet?
0:05:34 > 0:05:37- No.- And what about the two painted pictures?
0:05:37 > 0:05:39It's wet.
0:05:39 > 0:05:43Ooh, ho-ho! Yeah, it is still wet, isn't it?
0:05:43 > 0:05:46Oh, yes, definitely still wet.
0:05:46 > 0:05:48So this experiment has shown us
0:05:48 > 0:05:52that felt-tip pens dry straightaway,
0:05:52 > 0:05:56but paints take a while to dry because they're mixed with water.
0:05:56 > 0:06:01We need to do another experiment, and I need to wash my hands!
0:06:02 > 0:06:04It's my turn to make a picture now
0:06:04 > 0:06:07and I'm using a different type of paint.
0:06:07 > 0:06:10It's called a dry powder paint. Here we go.
0:06:12 > 0:06:16That's strange-looking paint. It's all powdery.
0:06:16 > 0:06:20Ooh! What can you see happening?
0:06:20 > 0:06:22It's slipping off your brush.
0:06:22 > 0:06:26Yeah! Well, I'll try painting a picture now.
0:06:27 > 0:06:28Oh... Ha-ha!
0:06:28 > 0:06:32It's just making a bit of a mess, isn't it?
0:06:32 > 0:06:35- It's not working very well, is it, Nina?- No!
0:06:36 > 0:06:37Oh!
0:06:37 > 0:06:42Oh! Nina's picture's fallen off the paper!
0:06:42 > 0:06:46We want out painting to last a bit longer than that, don't we?
0:06:46 > 0:06:49Actually, I knew that was going to happen.
0:06:49 > 0:06:54All paint colours start out as dry powders like this,
0:06:54 > 0:06:58and the dry paint colour needs to be mixed with wet things like water
0:06:58 > 0:07:00to help it stick to the paper.
0:07:00 > 0:07:04Then when the water dries, the colour is left behind.
0:07:04 > 0:07:09We found out earlier that felt-tip pens contain a tiny bit of water
0:07:09 > 0:07:12and they also contain a special chemical
0:07:12 > 0:07:15that helps the colour to dry really quickly.
0:07:15 > 0:07:19I have some of the special chemical here. Watch this.
0:07:19 > 0:07:23I'm going to dip some cotton wool into some water...
0:07:24 > 0:07:26..and spread the water here...
0:07:28 > 0:07:29..and now I'll do the same
0:07:29 > 0:07:32with the special chemical.
0:07:37 > 0:07:39I wonder what's going to happen.
0:07:40 > 0:07:41So what's happened?
0:07:41 > 0:07:46- The chemical's gone...- ..but the water's still there.- That's right.
0:07:46 > 0:07:48The chemical is in felt-tip pens,
0:07:48 > 0:07:52so pictures drawn with felt-tip pens dry quickly.
0:07:52 > 0:07:54If pens dry faster than paint,
0:07:54 > 0:07:59- which would you rather use to colour a picture in with?- ALL: Pens!
0:07:59 > 0:08:01Our next experiment is a big challenge,
0:08:01 > 0:08:05so we'll see if you change your minds. Let's go, experimenters.
0:08:11 > 0:08:14Off we go for another adventure.
0:08:14 > 0:08:18Nina said something about a big challenge.
0:08:18 > 0:08:22We're in the Science Centre. There's the skeleton on the bicycle.
0:08:22 > 0:08:27And there's the giant piano that you can play with your feet.
0:08:27 > 0:08:30I had to find a big place for your big challenge
0:08:30 > 0:08:34and the Science Centre is perfect. Look over here.
0:08:34 > 0:08:37- GASPING - Look, it's me!
0:08:37 > 0:08:39That's a picture of me.
0:08:39 > 0:08:45Oh, and look, there's you, Belle, and Ollie and Luke and Felix.
0:08:45 > 0:08:50For this experiment, we'll colour in giant pictures of my lovely neurons.
0:08:50 > 0:08:51So let's go.
0:08:54 > 0:08:58So we found out that felt-tip pens dry quicker than paint,
0:08:58 > 0:09:02so just remind me, which would you rather use to colour in with?
0:09:02 > 0:09:04ALL: Felt-tip pens!
0:09:04 > 0:09:09And I'm going to use this paint and a nice big brush.
0:09:09 > 0:09:10Let's get experimenting.
0:09:28 > 0:09:32Nina's working really fast with that paint.
0:09:32 > 0:09:34She's way ahead of the experimenters.
0:09:34 > 0:09:37How's it coming with those felt-tip pens, guys?
0:09:37 > 0:09:41- The pens are too small. - We'll never finish it.
0:09:41 > 0:09:44Why don't you try these bigger pens? They might help.
0:09:55 > 0:09:58Nina was really fast with that big brush.
0:09:58 > 0:10:02That's me finished. How are my experimenters getting on?
0:10:02 > 0:10:04It's taking ages, Nina.
0:10:04 > 0:10:08I've been a bit naughty. I knew that colouring such big pictures
0:10:08 > 0:10:11with felt-tip pens would take a long time
0:10:11 > 0:10:16because the tip on a felt-tip pen is really small. Look.
0:10:16 > 0:10:21Felt-tips are great for small pictures and they dry quickly,
0:10:21 > 0:10:26but if you want to colour in big areas quickly and easily,
0:10:26 > 0:10:29it's much better to use paint and a brush,
0:10:29 > 0:10:33but I wonder if there's a way of making paint dry faster.
0:10:33 > 0:10:37Let's go back to the lab for one final experiment.
0:10:38 > 0:10:42We want to know if we can make paint dry any faster.
0:10:42 > 0:10:46- So, let's get experimenting! - ALL: Yeah!
0:10:46 > 0:10:49We're going to work in pairs for this experiment
0:10:49 > 0:10:52so, Katie and Tia, you guys can go together
0:10:52 > 0:10:54and, Lucy, you and I will be a team.
0:10:54 > 0:10:57OK, we're going to do some more colouring in.
0:10:57 > 0:11:01Katie and Tia, can you share this beaker of water in front of you?
0:11:01 > 0:11:03You can use that to dip your brushes in.
0:11:03 > 0:11:06Lucy, you and I are going to use this.
0:11:06 > 0:11:09It's the special chemical in felt-tip pens
0:11:09 > 0:11:13that makes them dry really quickly. It's safe for this experiment.
0:11:13 > 0:11:18Please remember that some liquids are not safe to touch or drink.
0:11:18 > 0:11:21- OK, guys, are you ready?- Yes!
0:11:42 > 0:11:44It's not working very well.
0:11:44 > 0:11:48No, my paintbrush isn't getting the paint onto the paper at all.
0:11:48 > 0:11:51Hmm! And we're using the same paints.
0:11:51 > 0:11:54What do you think might be wrong?
0:11:54 > 0:11:58- The chemical. - Yeah, it's the quick-drying liquid
0:11:58 > 0:12:01in our beaker that's drying too quickly to use with paint.
0:12:01 > 0:12:03Water is much better
0:12:03 > 0:12:07because it keeps the paint wet long enough to move around the paper.
0:12:09 > 0:12:13Your question was, why do we have to wait for our paintings to dry?
0:12:13 > 0:12:15I think we've answered it.
0:12:15 > 0:12:19We discovered the colours used in paint would be too dry and powdery
0:12:19 > 0:12:21to paint without water.
0:12:21 > 0:12:24Felt-tip pens are good for colouring in small pictures,
0:12:24 > 0:12:26because they have a special chemical in them
0:12:26 > 0:12:29that makes them dry really quickly.
0:12:29 > 0:12:31If you want to colour in a big area,
0:12:31 > 0:12:35the water in paint lets you spread the colour quickly and easily,
0:12:35 > 0:12:38so, although we have to wait for the water to dry,
0:12:38 > 0:12:42it's worth it to make such lovely big colourful pictures.
0:12:42 > 0:12:46- I hope that's answered your question.- ALL: Thanks, Nina. Bye!
0:12:46 > 0:12:47Bye!
0:12:51 > 0:12:55If you want to know more about the science that's all around us,
0:12:55 > 0:12:58go to the Nina section on the CBeebies website. Have fun.
0:12:58 > 0:13:00Lab coat on, Nina?
0:13:00 > 0:13:02Lab coat on, Ollie.
0:13:02 > 0:13:04Safety gloves on, Nina?
0:13:04 > 0:13:06Safety gloves on, Felix.
0:13:06 > 0:13:08And don't forget your goggles, Nina.
0:13:08 > 0:13:10Goggles are on, Luke.
0:13:10 > 0:13:12I think we're ready.
0:13:13 > 0:13:16# We do experiments in the lab
0:13:16 > 0:13:19- # In the lab!- Shooby-dooby! In the lab!
0:13:19 > 0:13:21# Bubbling experiments in the lab
0:13:21 > 0:13:25- # In the lab!- Go, Nina! In the lab!
0:13:25 > 0:13:28# Fizzing and popping! Steam and smoke!
0:13:28 > 0:13:31# We need protection Don't we, folks?
0:13:31 > 0:13:35# We always put our safety first
0:13:35 > 0:13:37# Shooby-dooby-dooby-dooby!
0:13:37 > 0:13:39# We do experiments in the lab
0:13:39 > 0:13:42- # In the lab!- Go, Nina! #
0:13:42 > 0:13:44It's been a marvellous day,
0:13:44 > 0:13:48especially feeling the tip of the pen - wet and tickly.
0:13:48 > 0:13:50I've had a fabby day.
0:13:50 > 0:13:54It was funny when Nina's picture fell off the paper. Ha-ha-ha!
0:13:54 > 0:13:58I really enjoyed myself today.
0:13:58 > 0:14:01Nina was so fast colouring in with that big brush.
0:14:01 > 0:14:05Our day's been bursting with sensational experiments.
0:14:05 > 0:14:09- I hope you've enjoyed it. See you soon. Bye.- Bye!