0:00:05 > 0:00:08# If you've got a question and you don't know where to go
0:00:08 > 0:00:12# Ask Nina for some help Cos she's got a science show
0:00:12 > 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 > 0:00:22# Eyes Eyes Ears Ears
0:00:22 > 0:00:23# 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 > 0:00:36# Ollie sniffs out smells and scents and Belle she hears so much
0:00:36 > 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 > 0:00:46# Eyes Eyes Ears Ears
0:00:46 > 0:00:47# Nose Nose
0:00:47 > 0:00:50# Nina and the Neurons find out what you need to know. Yeah!
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! #
0:00:57 > 0:01:00There you go. A nice big drink for you.
0:01:00 > 0:01:04Oh, hello! You've caught me talking to my plant.
0:01:04 > 0:01:08Some people say it helps them to grow. Isn't that right?
0:01:08 > 0:01:12Look, this mud's dried out and made some lovely patterns.
0:01:14 > 0:01:16I'll be able to wet it again and use it for some other plants.
0:01:16 > 0:01:19BEEPING
0:01:19 > 0:01:21I hear a beep. I see a flash. I wonder what they're going to ask.
0:01:29 > 0:01:31ALL: Hi, Nina.
0:01:31 > 0:01:37- Hi.- We've got a question for you. - What's the Giant's Causeway?
0:01:37 > 0:01:40That's a great question. What is the Giant's Causeway?
0:01:40 > 0:01:43The Giant's Causeway is a place in Northern Ireland
0:01:43 > 0:01:46where there are lots of very special rocks.
0:01:46 > 0:01:50How was it made? Come to my workshop and we'll investigate.
0:01:50 > 0:01:55CHILDREN: See you soon, Nina. Bye.
0:01:55 > 0:01:56Bye.
0:01:56 > 0:01:59Well, I'm going to need some help to answer this one
0:01:59 > 0:02:00and I know just who to ask.
0:02:00 > 0:02:02OK, Neurons. Time to get to work.
0:02:16 > 0:02:19NEURONS: Neurons at the ready, Nina.
0:02:20 > 0:02:23OK, today's question is what is the Giant's Causeway?
0:02:23 > 0:02:26Which Neuron do you think would be the most useful in helping us
0:02:26 > 0:02:28find the answer?
0:02:28 > 0:02:31NEURONS: Me! Me!
0:02:31 > 0:02:34Will it be fabulous Felix?
0:02:34 > 0:02:37I can help so very much if you need the sense of touch.
0:02:37 > 0:02:42- Will it be beautiful Belle? - I send messages to brain from ear.
0:02:42 > 0:02:46- If there's a sound, I'll help you hear.- Will it be lovely Luke?
0:02:46 > 0:02:48For looking and seeing, day or night,
0:02:48 > 0:02:50I'll help you with your sense of sight.
0:02:50 > 0:02:53Will it be awesome Ollie?
0:02:53 > 0:02:54If it's pongy or whiffy,
0:02:54 > 0:02:57but you can't tell, my messages help your sense of smell.
0:02:57 > 0:03:01- Or will it be baby Bud? - Sour, salty, bitter or sweet.
0:03:01 > 0:03:04I'm your taste buddy whenever you eat.
0:03:08 > 0:03:12- It's Felix. - CHEERING
0:03:12 > 0:03:18NEURONS: Go, Felix. Go, Felix. Go, Felix. Go, Felix.
0:03:18 > 0:03:22Marvellous. A little touch can mean so much, Nina.
0:03:24 > 0:03:27Today's question is what is the Giant's Causeway?
0:03:27 > 0:03:30Because the Giant's Causeway if full of rocks that we can touch,
0:03:30 > 0:03:33Felix will be helping us today. Stand by, Neurons.
0:03:33 > 0:03:35I've a feeling I may need help from all of you.
0:03:35 > 0:03:39I need to get the workshop ready before the Explorers arrive.
0:03:41 > 0:03:42Blane loves little puppies.
0:03:42 > 0:03:44Zak loves to play with his baby brother Luke
0:03:44 > 0:03:47and Adam loves making his own robots.
0:03:47 > 0:03:50But they all want to know what is the Giant's Causeway.
0:03:50 > 0:03:53The Giant's Causeway is near my house.
0:03:53 > 0:03:58- The rocks are funny shapes. - Why do the rocks look like that?
0:04:01 > 0:04:05Today, for one day only, Blane, Zak and Adam become the Explorers!
0:04:12 > 0:04:15- Hi, guys.- ALL: Hi, Nina.
0:04:15 > 0:04:18Welcome to my workshop and thank you for your great question.
0:04:18 > 0:04:19What is the Giant's Causeway?
0:04:19 > 0:04:22To find out the answer, let's start by using our senses.
0:04:22 > 0:04:26NEURONS: Woo-woo! A senses experiment.
0:04:26 > 0:04:28We're ready, Nina.
0:04:28 > 0:04:32First, let's have a look at these photos of the Giant's Causeway.
0:04:32 > 0:04:35The Giant's Causeway is a place where rocks have formed
0:04:35 > 0:04:36in a very special way.
0:04:36 > 0:04:38Do they look different from the rocks
0:04:38 > 0:04:40you'd normally see at the beach?
0:04:40 > 0:04:46- Yes, they're in shapes.- Yes, they're in really interesting shapes.
0:04:46 > 0:04:48They all fit together.
0:04:48 > 0:04:51It's like someone's made a big rock jigsaw.
0:04:51 > 0:04:55It is, Luke. But someone didn't make these rocks this shape.
0:04:55 > 0:04:58They formed naturally in the world around us.
0:04:58 > 0:05:01Here we have some soil and some water.
0:05:01 > 0:05:04Soil is what plants grow in.
0:05:04 > 0:05:07You can see it in gardens and parks.
0:05:07 > 0:05:11Does anyone know what we get when we mix them both together?
0:05:11 > 0:05:12ALL: Mud!
0:05:12 > 0:05:16Exactly, and to learn more about the shaped rocks at
0:05:16 > 0:05:18the Giant's Causeway, we're going to get our hands dirty
0:05:18 > 0:05:20and make our very own mud.
0:05:24 > 0:05:27BOYS: Ewwww!
0:05:35 > 0:05:36Let's get mixing.
0:05:40 > 0:05:44Here we go again. Another messy experiment.
0:05:52 > 0:05:59- Oh, we've got some really thick mud now. How does it feel?- Wet.
0:05:59 > 0:06:02It feels wet and that's because we added water.
0:06:02 > 0:06:06I wonder what happens when mud dries out.
0:06:06 > 0:06:09Let's clean our hands and watch the mud drying.
0:06:11 > 0:06:15It's going to take a long time for that mud to dry.
0:06:15 > 0:06:18I think you might be right, Belle.
0:06:18 > 0:06:21I know. We can look at the dried-out mud from
0:06:21 > 0:06:26when I was watering my plant earlier. I've got it down here.
0:06:26 > 0:06:30Ooh, what does that remind you of?
0:06:30 > 0:06:31The Giant's Causeway.
0:06:31 > 0:06:34Yes, it's cracked into lots of different shapes
0:06:34 > 0:06:36a bit like the Giant's Causeway.
0:06:36 > 0:06:40We can also see shapes like this when paint dries out
0:06:40 > 0:06:44or when you take biscuits out of the oven. They cool down and crack too.
0:06:44 > 0:06:47- How does the mud look?- Dry.
0:06:47 > 0:06:52It looks dry and it feels dry. It feels more like soil again.
0:06:52 > 0:06:54When things dry out, they lose water.
0:06:54 > 0:06:58Here, the water has dried out, leaving just the soil.
0:06:58 > 0:07:03We've seen that the Giant's Causeway has rocks that form in shapes
0:07:03 > 0:07:05that all fit nicely together.
0:07:05 > 0:07:09And when mud dries out it cracks into shapes.
0:07:09 > 0:07:11A bit like the Giant's Causeway.
0:07:11 > 0:07:13Maybe that has something to do with what makes
0:07:13 > 0:07:15the shapes in the Giant's Causeway.
0:07:15 > 0:07:17I think you could be right, Neurons.
0:07:17 > 0:07:19Let's go somewhere really rocky to find out.
0:07:27 > 0:07:29Where do you think we're going today?
0:07:29 > 0:07:32Nina said we were going somewhere really rocky.
0:07:32 > 0:07:34Oh, not another boat trip.
0:07:34 > 0:07:39- That's too rocky for my liking. - # Row, row, row your boat... # Ha ha!
0:07:39 > 0:07:42Look, guys. We're here.
0:07:43 > 0:07:46To answer your question "What is the Giant's Causeway?"...
0:07:46 > 0:07:48what better place to come than the Giant's Causeway?!
0:07:48 > 0:07:50CHEERING
0:07:52 > 0:07:55- Let's go exploring. - CHEERING
0:08:05 > 0:08:08I've never seen so many strange-shaped rocks.
0:08:08 > 0:08:15192, 193, 194, 190... I can't count any more!
0:08:24 > 0:08:29- That was fun. Did you see the different-shaped rocks?- ALL: Yeah!
0:08:29 > 0:08:32For a long time, no-one knew how the rocks came to be like this
0:08:32 > 0:08:37so people made up stories about them being made by a giant.
0:08:37 > 0:08:40LAUGHTER
0:08:40 > 0:08:43That's why it's called the Giant's Causeway.
0:08:43 > 0:08:47But scientists have worked out how these rocks were really made.
0:08:47 > 0:08:49Look at this.
0:08:49 > 0:08:51Many years ago,
0:08:51 > 0:08:55hot melted rock from deep under the ground came to the surface.
0:08:55 > 0:08:58And collected in a dip in the ground.
0:08:58 > 0:09:02It took a really long time to cool down and go hard.
0:09:02 > 0:09:06As it cooled, it cracked into shapes.
0:09:06 > 0:09:10Eventually, it became these rocks - the Giant's Causeway.
0:09:10 > 0:09:14So the Giant's Causeway wasn't made by a big giant?
0:09:14 > 0:09:19- Why did it crack, Nina? - That's a great question.
0:09:19 > 0:09:22Let's go to the workshop to do one final experiment.
0:09:24 > 0:09:26You asked, what is the Giant's Causeway?
0:09:26 > 0:09:29So far, we've found out that the Giant's Causeway was made
0:09:29 > 0:09:32when hot rock from underground came out
0:09:32 > 0:09:36and cooled down very slowly, cracking into shapes.
0:09:36 > 0:09:41We want to know why hot rock cracks when it cools down.
0:09:41 > 0:09:47I have something that might explain. This is very hot sugar.
0:09:47 > 0:09:52It's so hot, it's melting. Just like ice cream on a hot day.
0:09:52 > 0:09:54Be careful around hot things.
0:09:54 > 0:09:57I think it's time to pour.
0:10:16 > 0:10:17It's all in one piece
0:10:17 > 0:10:20and it's so sticky, it's stuck to the board.
0:10:22 > 0:10:26Wow, that sugar looks really stuck. It's not going anywhere.
0:10:26 > 0:10:28We're going to see what happens
0:10:28 > 0:10:32when we cool down some very hot sugar in this very cold water.
0:10:32 > 0:10:35Remember, Nina has been specially trained to do this.
0:10:35 > 0:10:38You should never try anything like this yourself.
0:10:53 > 0:10:56- What's happening?- It's cracking.
0:11:01 > 0:11:09As the sugar cools down, it shrinks, which means it takes up less space.
0:11:09 > 0:11:14This sugar was stuck down so it couldn't move.
0:11:14 > 0:11:17Because it couldn't move, the shrinking made it crack.
0:11:17 > 0:11:20Did that happen at the Giant's Causeway?
0:11:20 > 0:11:22Yes! A long time ago,
0:11:22 > 0:11:27the hot rock at the Giant's Causeway cooled down and it shrank.
0:11:27 > 0:11:30It got smaller and took up less space.
0:11:30 > 0:11:33Because the rock was stuck down, when it started to shrink,
0:11:33 > 0:11:36it cracked into shapes like these.
0:11:36 > 0:11:39The same thing happened with the mud earlier.
0:11:39 > 0:11:44As it dried out, it took up less space and cracked into shapes.
0:11:44 > 0:11:48The hot rock cooled, shrank and cracked into shapes.
0:11:48 > 0:11:50That's brilliant.
0:11:50 > 0:11:52It's more than brilliant, Belle.
0:11:52 > 0:11:55It's very unusual for rocks to form in this way and that's why
0:11:55 > 0:11:59the Giant's Causeway is such a special place.
0:12:03 > 0:12:05Your question was, what is the Giant's Causeway?
0:12:05 > 0:12:07I think we've answered it.
0:12:07 > 0:12:11We found out that the Giant's Causeway is a place where
0:12:11 > 0:12:14rocks have formed in a very special way.
0:12:14 > 0:12:19Hot melted rock from deep underground came out.
0:12:19 > 0:12:23And cooled down very slowly.
0:12:23 > 0:12:27When the hot rock cooled, it shrank and cracked into shapes.
0:12:27 > 0:12:31Making lots of funny-shaped rocks,
0:12:31 > 0:12:36and that's why the Giant's Causeway is so special.
0:12:36 > 0:12:41- I hope that's answered your question.- ALL: Thanks, Nina. Bye.
0:12:41 > 0:12:43You're welcome. Bye.
0:12:45 > 0:12:49If you want to know more about the science that's all around us,
0:12:49 > 0:12:52go to the Nina section on the CBeebies website.
0:12:52 > 0:12:54Have fun.
0:12:54 > 0:12:58# Everyday the sun comes up it brightens up the sky
0:12:59 > 0:13:04# A brand-new day to understand A chance to ask ourselves why
0:13:04 > 0:13:10- # Why?- There's a world of possibilities outside our front door
0:13:10 > 0:13:15# So every day take a look around and explore
0:13:15 > 0:13:18# Explore, explore, explore, explore
0:13:18 > 0:13:20# Exploring in the garden
0:13:20 > 0:13:21# Rocks
0:13:21 > 0:13:24- # Exploring in the park - Rivers
0:13:24 > 0:13:27- # Exploring in the day time - Mountains
0:13:27 > 0:13:30- # And even when it's dark - Planets
0:13:30 > 0:13:32# Look at the earth, look at the sky
0:13:32 > 0:13:35# Look at the world before us
0:13:35 > 0:13:38# Explore, explore, explore, explore
0:13:38 > 0:13:44# We're always on the lookout We're earth explorers
0:13:44 > 0:13:46# We're earth explorers
0:13:47 > 0:13:50# We're earth explorers. #
0:13:50 > 0:13:54Remember, exploring is about looking at the world around us,
0:13:54 > 0:13:56asking why and finding out the answer.
0:13:56 > 0:14:00Whether it's deep underground, at the end of your playground or
0:14:00 > 0:14:04way up above the clouds, let's keep exploring our exciting world.
0:14:04 > 0:14:08- See you again soon. Bye. - ALL: BYE.