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 > 0:00:14# She makes sense of her senses While helping all her fans
0:00:14 > 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 > 0:00:47- # Eyes.- Eyes! - Ears.- Ears!- Nose.- Nose!
0:00:47 > 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 > 0:00:55# Oh yeah! #
0:00:55 > 0:00:57Ooh!
0:00:57 > 0:01:01Oh! Hee-hee! Oh, hello!
0:01:01 > 0:01:03I love this game!
0:01:03 > 0:01:07You throw the ball into the air then catch it with a special pad
0:01:07 > 0:01:11but the amazing thing is that, when you turn it upside down,
0:01:11 > 0:01:13the ball doesn't fall off!
0:01:13 > 0:01:15It's completely stuck to the pad!
0:01:15 > 0:01:17BLEEPING
0:01:17 > 0:01:21I hear a beep, I see a flash. I wonder what they're going to ask.
0:01:21 > 0:01:24BEEPING
0:01:24 > 0:01:25- BOTH:- Hi, Nina!
0:01:25 > 0:01:28- Hi, guys. - We've got a question for you.
0:01:28 > 0:01:31How do they make things stick together?
0:01:31 > 0:01:35That's a great question. How do we make things stick together?
0:01:35 > 0:01:39Sticking things together uses lots of clever engineering.
0:01:39 > 0:01:42Come to my workshop, and we'll investigate.
0:01:42 > 0:01:45- BOTH:- See you soon, Nina, bye!- Bye!
0:01:45 > 0:01:47I'm going to need some help to answer this one
0:01:47 > 0:01:49and I know just who to ask.
0:01:49 > 0:01:51OK, Neurons, time to get to work!
0:02:06 > 0:02:09- ALL:- Neurons at the ready, Nina!
0:02:09 > 0:02:13Today's question is, how do we make things stick together?
0:02:13 > 0:02:17Which Neuron will be most useful in helping us find the answer?
0:02:17 > 0:02:20- ALL:- Me! Me! Me!
0:02:20 > 0:02:23Will it be fabulous Felix?
0:02:23 > 0:02:27I can help so very much, if you need the sense of touch.
0:02:27 > 0:02:29Will it be beautiful Belle?
0:02:29 > 0:02:33I send messages to brain from ear. If there's a sound, I'll help you hear!
0:02:33 > 0:02:35Will it be lovely Luke?
0:02:35 > 0:02:37For looking and seeing, day or night,
0:02:37 > 0:02:40I'll help you with your sense of sight!
0:02:40 > 0:02:41Will it be awesome Ollie?
0:02:41 > 0:02:44If it's pongy or whiffy, but you can't tell,
0:02:44 > 0:02:47my messages help your sense of smell.
0:02:47 > 0:02:49Or will it be baby Bud?
0:02:49 > 0:02:54Sour, salty, bitter or sweet, I'm your taste buddy whenever you eat!
0:02:54 > 0:02:57FUTURISTIC BEEPING
0:02:57 > 0:02:59It's Felix!
0:02:59 > 0:03:00CHEERING
0:03:00 > 0:03:07- THEY CHANT:- Go Felix! Go Felix! Go Felix! Go Felix! Go Felix!
0:03:07 > 0:03:12Marvellous! A little touch can mean so much, Nina.
0:03:12 > 0:03:15Today's question is, how do we make things stick together?
0:03:15 > 0:03:18Stickiness is something we feel,
0:03:18 > 0:03:20so Felix, our touch neuron, will help us.
0:03:20 > 0:03:24I need to get the workshop ready before the engineers arrive.
0:03:25 > 0:03:29James loves spaghetti Bolognese.
0:03:29 > 0:03:32Ellie likes telling jokes.
0:03:32 > 0:03:35When I kick my football, my shoe stays on.
0:03:35 > 0:03:38My shoes don't fall off when I run.
0:03:38 > 0:03:43So today, for one day only, James and Ellie become the Engineers!
0:03:47 > 0:03:50- Hi, Ellie, hi, James! - BOTH:- Hi, Nina!
0:03:50 > 0:03:52Welcome to my workshop.
0:03:52 > 0:03:54Thank you for your great question -
0:03:54 > 0:03:57how do we make things stick together?
0:03:57 > 0:04:00To find out the answer, let's start by using our senses.
0:04:00 > 0:04:05Woo, woo! A senses experiment! We're ready, Nina!
0:04:05 > 0:04:08So we have here a very cool pair of trainers.
0:04:08 > 0:04:10But what is making the flap stick down?
0:04:10 > 0:04:12Sticky fabric.
0:04:12 > 0:04:16That's right! This sticky fabric, and it's a great invention
0:04:16 > 0:04:19that's used on lots of everyday things
0:04:19 > 0:04:21like these, so let's have a look.
0:04:21 > 0:04:25There you go, Ellie. Try opening and closing that.
0:04:25 > 0:04:27James! Have a look at that!
0:04:27 > 0:04:29Oh, I've got that at home!
0:04:29 > 0:04:31Have you? Oh, they're great fun!
0:04:31 > 0:04:34SCRUNCHING AND RIPPING
0:04:34 > 0:04:37Ha-ha! Very good, guys.
0:04:37 > 0:04:40So the sticky fabric is different to glue
0:04:40 > 0:04:43because when you unstick glue it can't stick again.
0:04:43 > 0:04:48But sticky fabric can be stuck...
0:04:48 > 0:04:49Whoa!
0:04:49 > 0:04:51..and unstuck, easily.
0:04:51 > 0:04:54It's what engineers call "re-useable"
0:04:54 > 0:04:59because you can use it over and over again. Woo hoo!
0:04:59 > 0:05:02"Re-useable" - I like the sound of that word.
0:05:02 > 0:05:06So let's investigate how this sticky fabric works.
0:05:06 > 0:05:10So if you'd like to put your strips together,
0:05:10 > 0:05:14that's really good, guys, and pull them apart.
0:05:14 > 0:05:15RIPPING
0:05:15 > 0:05:17Yay!
0:05:17 > 0:05:22That's a fantastic ripping sound! Rrrrip!
0:05:22 > 0:05:26Now, what do you notice about how they feel?
0:05:26 > 0:05:28Smooth and soft.
0:05:28 > 0:05:30- Prickly.- Prickly!
0:05:30 > 0:05:34Hmmm. One side feels rough, and the other is fluffy!
0:05:34 > 0:05:38I think we need to have a closer look at this sticky fabric
0:05:38 > 0:05:41using my Nina-cam, and you guys can watch
0:05:41 > 0:05:46on my little screen here. What can you see there?
0:05:46 > 0:05:48Plastic hooks.
0:05:48 > 0:05:52Wow! It's like a sea of bendy little hooks!
0:05:52 > 0:05:56That's right. The fabric is covered in lots of tiny plastic hooks.
0:05:56 > 0:06:00Let me just put the fabric together again to see how it works.
0:06:00 > 0:06:04You can see the plastic hooks on the rough side
0:06:04 > 0:06:08are catching on to the fluffy fabric and holding it together.
0:06:08 > 0:06:10And when I undo it...
0:06:10 > 0:06:11RIPPING
0:06:11 > 0:06:14Ha-ha! What did you notice when it ripped apart?
0:06:14 > 0:06:16The hooks unstuck.
0:06:16 > 0:06:19That's right! When we unstick the sticky fabric
0:06:19 > 0:06:24the hooks bend back and unhook the fluffy part.
0:06:24 > 0:06:27And that's what makes the ripping sound.
0:06:27 > 0:06:32And that's why it sticks and unsticks easily.
0:06:32 > 0:06:34That is way cool!
0:06:34 > 0:06:39Engineers invented this sticky fabric by copying the idea
0:06:39 > 0:06:41from this plant.
0:06:41 > 0:06:46Oh! This is a bur plant and these are its seeds.
0:06:46 > 0:06:49Now, hold your hands out nice and flat.
0:06:49 > 0:06:53Ooh! How do they feel?
0:06:54 > 0:06:56- Rough.- A bit rough?
0:06:56 > 0:06:58The bur seeds feel a little spiky.
0:06:58 > 0:07:02Sometimes when we're walking in the countryside
0:07:02 > 0:07:05bur seeds can stick to our clothes. Oh!
0:07:06 > 0:07:10So let's have a closer look at these bur seeds.
0:07:10 > 0:07:13Oh! The bur seed has lots and lots of little hooks
0:07:13 > 0:07:17that can stick and unstick to things easily
0:07:17 > 0:07:19but these are quite small.
0:07:19 > 0:07:23What would happen if we wanted to stick something much bigger?
0:07:23 > 0:07:27Come on, guys, we're moving on to bigger and better sticky things!
0:07:29 > 0:07:33Hmmm! Where do you think we're going today?
0:07:33 > 0:07:36Nina mentioned bigger and better sticky things.
0:07:36 > 0:07:41Maybe it's a huge bakery with yummy, sticky buns and cakes!
0:07:41 > 0:07:45It's not a bakery, but I feel it's going to be fun.
0:07:45 > 0:07:48NINA LAUGHS
0:07:48 > 0:07:51RIPPING AND SCRUNCHING
0:07:51 > 0:07:54NINA COOS AND LAUGHS
0:07:54 > 0:07:57Oh! I'm stuck!
0:07:59 > 0:08:02Ho-ho-ho! Nina's stuck to the wall!
0:08:02 > 0:08:04NINA LAUGHS
0:08:04 > 0:08:06RIPPING
0:08:06 > 0:08:09Oh, ha-ha! Can I stick to you, sis?
0:08:09 > 0:08:13You stick with me anytime, little bro.
0:08:13 > 0:08:17- Oh, that's great fun, isn't it? - Yes!- So, when we touch the wall,
0:08:17 > 0:08:20the special suits that we're wearing make us stick to it.
0:08:20 > 0:08:24Now, try seeing if you guys can stick to each other.
0:08:26 > 0:08:29- Now, what's happening? - We're not sticking together, Nina.
0:08:29 > 0:08:33That's right, because hooks don't stick to hooks very well,
0:08:33 > 0:08:37and fluffy doesn't stick to fluffy. For the sticky fabric to work,
0:08:37 > 0:08:41the rough fabric with the hooks must stick to the fluffy fabric.
0:08:41 > 0:08:44OK, guys, what I'd like you to do
0:08:44 > 0:08:47is touch the wall with just one arm. Go!
0:08:47 > 0:08:49And take it off.
0:08:49 > 0:08:53OK, very good. Now, how easy was it to unstick your arm?
0:08:53 > 0:08:56BOTH: Really easy, Nina!
0:08:56 > 0:09:02OK, now I'd like you to throw your whole bodies onto the wall. Go!
0:09:02 > 0:09:04And try and pull it off. Pull, pull!
0:09:04 > 0:09:08Oh! Ha-ha! OK, OK!
0:09:08 > 0:09:12- Now, was that easier or harder to pull yourselves away?- Harder!
0:09:12 > 0:09:16That's right, because there was more of you touching the wall,
0:09:16 > 0:09:20so the bigger the sticky area, the better it will stick.
0:09:20 > 0:09:24Larger surfaces mean more hooks can stick to the fluffy fabric,
0:09:24 > 0:09:27so it holds both sides together better.
0:09:28 > 0:09:32So, your question was, how do we make things stick together?
0:09:32 > 0:09:35We've discovered that the bigger the sticky area,
0:09:35 > 0:09:37the better something will stick.
0:09:37 > 0:09:41Sticky fabric and glue are all good for sticking things,
0:09:41 > 0:09:44but how do we know which one to use, and when?
0:09:44 > 0:09:47So, let's investigate! Okey-coke, over here,
0:09:47 > 0:09:51I have two pieces of wood stuck together using glue.
0:09:51 > 0:09:52I let it dry.
0:09:52 > 0:09:55Remember to be careful when you're using glue.
0:09:55 > 0:10:00And here, I have two pieces of wood stuck together using sticky fabric.
0:10:00 > 0:10:04Now, we're going to gradually add weights, to test their stickiness.
0:10:04 > 0:10:09Which do you think will be stronger, the glue or the sticky fabric?
0:10:09 > 0:10:13- The glue.- Let's see what happens. James, why don't you go first?
0:10:13 > 0:10:17Pick up one of the weights and we'll do it at the same time.
0:10:17 > 0:10:20Pop it in, gently. That's it. Woop!
0:10:20 > 0:10:24Anything happen? No. OK, your turn, Ellie.
0:10:35 > 0:10:36Hee-hee!
0:10:36 > 0:10:40CREAKING
0:10:40 > 0:10:42It's making a noise!
0:10:47 > 0:10:50Oh, I think we could go another one!
0:10:52 > 0:10:54Another one, then, go! Oh, no!
0:10:54 > 0:10:56THEY LAUGH
0:10:56 > 0:11:02Oh, fantastic! You were right. The sticky fabric has come apart.
0:11:02 > 0:11:07Engineers use different sticky things for different jobs.
0:11:07 > 0:11:11Glue is for things we want to stay stuck together and sticky fabric
0:11:11 > 0:11:16is for things that we need to stick and unstick, over and over again.
0:11:16 > 0:11:23- So, which one would be best, guys? On a bag?- Sticky fabric.
0:11:23 > 0:11:25Yes, because we open and close a bag,
0:11:25 > 0:11:30we want it to stick and unstick, over and over again.
0:11:30 > 0:11:31It's reusable.
0:11:31 > 0:11:37I can use that word again. It's REUSABLE! Ha-ha!
0:11:37 > 0:11:44OK, Now, which would be best to stick a model boat together?
0:11:44 > 0:11:46- Glue.- You're absolutely right!
0:11:46 > 0:11:50If we're building a model boat and want it to stick together
0:11:50 > 0:11:53for ever, and not come apart, we would use glue.
0:11:53 > 0:11:57# Nina and the Neurons! #
0:11:57 > 0:12:01So, your question was, how do we make things stick together?
0:12:01 > 0:12:05I think we've answered it. We discovered that engineers need
0:12:05 > 0:12:08different types of sticky things for different jobs.
0:12:08 > 0:12:12And, the bigger the sticky area, the better something will stick.
0:12:12 > 0:12:17And engineers invented this clever fabric to be reusable, which means
0:12:17 > 0:12:22that it can be stuck and unstuck, over and over again!
0:12:22 > 0:12:26Hee-hee! So, I hope that's answered your question.
0:12:26 > 0:12:29- BOTH:- Thanks, Nina, bye!- Bye!
0:12:29 > 0:12:32To find out more about the science and engineering
0:12:32 > 0:12:37that's all around us, go to the Nina section on the CBeebies website.
0:12:37 > 0:12:38Have fun!
0:12:38 > 0:12:40- # Pulling.- Pushing. - Twisting.- Mixing.
0:12:40 > 0:12:43- # Drilling.- Squeezing.- Floating.
0:12:43 > 0:12:44# Go engineering
0:12:44 > 0:12:47# Go engineering!
0:12:47 > 0:12:50# When you need to fly it make it, shape it
0:12:52 > 0:12:56- # Go engineering - Go engineering!
0:12:56 > 0:12:59# When you want to build go engineering
0:12:59 > 0:13:00# Engineering!
0:13:00 > 0:13:05# When you've got to solve a problem but you don't know how to do it
0:13:05 > 0:13:08# It's time to go engineering
0:13:08 > 0:13:10# Engineering!
0:13:10 > 0:13:15# When you want to lift it stick it, pop it, bend it
0:13:15 > 0:13:18# It's time to go engineering
0:13:18 > 0:13:19# Engineering!
0:13:19 > 0:13:23- # Go engineering - Go engineering!
0:13:23 > 0:13:27# When you need to fly it make it, shape it
0:13:27 > 0:13:28# Engineering!
0:13:28 > 0:13:32- # Go engineering - Go engineering!
0:13:32 > 0:13:36# When you want to build, go engineering
0:13:37 > 0:13:39# Go engineering! #
0:13:39 > 0:13:41Oh, I've had a brilliant day.
0:13:41 > 0:13:45Especially hearing the r-r-ripping sound!
0:13:45 > 0:13:50It's been a marvellous day! I enjoyed feeling the bur seeds.
0:13:50 > 0:13:52I've had a fabby day!
0:13:52 > 0:13:55The sticky wall was brilliant fun!
0:13:55 > 0:13:59And remember, engineers help to build the world around us.
0:13:59 > 0:14:02They make things work and use science to solve problems.
0:14:02 > 0:14:04See you again, soon, bye!
0:14:04 > 0:14:08- # Nina and the Neurons... # - Go engineering!