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 > 0:00:24- # Eyes.- Eyes! - Ears.- Ears!- Nose.- Nose!
0:00:24 > 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 > 0:00:54# Oh, yeah! #
0:00:56 > 0:01:00# Doo-doo-doo... #
0:01:00 > 0:01:04Oh, that's strange. Hello. Just trying to turn my lamp on
0:01:04 > 0:01:08but it doesn't seem to be working, I wonder what's wrong.
0:01:08 > 0:01:11Oh... Silly me.
0:01:11 > 0:01:13Forgot to plug it in.
0:01:17 > 0:01:19That's better.
0:01:19 > 0:01:21BEEP
0:01:21 > 0:01:25I hear a beep, I see a flash, I wonder what they're going to ask.
0:01:30 > 0:01:33- BOTH: Hi, Nina!- Hi, guys.
0:01:33 > 0:01:35We've got a question for you.
0:01:35 > 0:01:39- Where does electricity come from? - That's a great question.
0:01:39 > 0:01:42Where does electricity come from?
0:01:42 > 0:01:45We need electricity to make lots of things work
0:01:45 > 0:01:46but where does it come from?
0:01:46 > 0:01:50Why don't you come down to my workshop to investigate?
0:01:50 > 0:01:55- See you soon, Nina! Bye!- Bye.
0:01:55 > 0:01:58I'm going to need some help to answer this one
0:01:58 > 0:02:02and I know just who to ask. OK, Neurons, time to get to work.
0:02:17 > 0:02:20ALL: Neurons at the ready, Nina.
0:02:20 > 0:02:24OK. Today's question is, where does electricity come from?
0:02:24 > 0:02:28Which Neuron will be most useful in helping us find the answer?
0:02:28 > 0:02:31- ALL: Me! Me! Me!- Oh, me!
0:02:31 > 0:02:34Will it be fabulous Felix?
0:02:34 > 0:02:38I can help so very much if you need the sense of touch.
0:02:38 > 0:02:40Will it be beautiful Belle?
0:02:40 > 0:02:44I send messages to brain from ear. If there's a sound, I'll help you hear.
0:02:44 > 0:02:46Will it be lovely Luke?
0:02:46 > 0:02:48For looking and seeing, day or night,
0:02:48 > 0:02:51I'll help you with your sense of sight.
0:02:51 > 0:02:53Will it be awesome Ollie?
0:02:53 > 0:02:56If it's pongy or whiffy but you can't tell,
0:02:56 > 0:02:59- my messages help your sense of smell. - Or will it be baby Bud?
0:02:59 > 0:03:04Sour, salty, bitter or sweet, I'm your taste buddy whenever you eat!
0:03:09 > 0:03:11It's Belle!
0:03:11 > 0:03:18- ALL:- Go, Belle. Go, Belle. Go, Belle. Go, Belle. Go, Belle.
0:03:18 > 0:03:21Brilliant. I'm all ears, Nina.
0:03:21 > 0:03:25Today's question is, where does electricity come from?
0:03:25 > 0:03:29Because electrical things in our homes sometimes make a noise,
0:03:29 > 0:03:31Belle will be helping us. But standby, Neurons,
0:03:31 > 0:03:34I may need some help from all of you.
0:03:34 > 0:03:38Right, I need to get the workshop ready before the Engineers arrive.
0:03:41 > 0:03:44Faye likes singing. Eliza like spaghetti.
0:03:44 > 0:03:47And they want to know about electricity.
0:03:47 > 0:03:49How does it get to my house?
0:03:49 > 0:03:51How is it made?
0:03:51 > 0:03:56So today, for one day only, Faye and Eliza become the Engineers.
0:04:01 > 0:04:05- Hi, Faye. Hi, Eliza.- BOTH: Hi, Nina.
0:04:05 > 0:04:08Welcome to my workshop. Thanks for your great question,
0:04:08 > 0:04:10where does electricity come from?
0:04:10 > 0:04:14To find out the answer, we'll start by using our senses.
0:04:14 > 0:04:18ALL: Whoo-whoo! A senses experiment! We're ready, Nina.
0:04:18 > 0:04:21First, we're going to play a little game.
0:04:21 > 0:04:23I have some things here from the workshop.
0:04:23 > 0:04:26We've got a mug, a fan,
0:04:26 > 0:04:30a pencil, hairdryer, stapler, and smoothie maker.
0:04:30 > 0:04:34I'd like you guys to put these ticks next to the ones you think
0:04:34 > 0:04:37need electricity to work. Go, go, go!
0:04:40 > 0:04:41Good.
0:04:48 > 0:04:52Well done, you've got them all right. Fantastic.
0:04:52 > 0:04:56The fan, the hairdryer and smoothie maker all need electricity to work.
0:04:56 > 0:05:01- How did you know?- They all have plugs.- Yes, that's right.
0:05:01 > 0:05:05We get electricity in our homes from plugs in the wall.
0:05:05 > 0:05:08The electricity moves down the wire
0:05:08 > 0:05:11and into the smoothie maker to make it work.
0:05:11 > 0:05:14Shall we plug them in to check they work?
0:05:14 > 0:05:16- Yeah.- Lovely.
0:05:19 > 0:05:22Yay, it's working!
0:05:22 > 0:05:24How about the hairdryer?
0:05:27 > 0:05:30Oh, what a noise!
0:05:30 > 0:05:34Ooh, delightful. Oh, lovely.
0:05:34 > 0:05:38The hairdryer's definitely working, too. And what have we got here?
0:05:38 > 0:05:40The smoothie maker.
0:05:43 > 0:05:45SMOOTHIE MAKER WHIZZES
0:05:45 > 0:05:51Oh! Have a look at this. Normally, we can't see electricity.
0:05:51 > 0:05:54This machine lets us see what happens
0:05:54 > 0:05:56when electricity moves through the air.
0:05:56 > 0:06:01The electricity is going to jump from here to here.
0:06:01 > 0:06:04Can I ask you guys to stand behind the safety screen?
0:06:04 > 0:06:08That's right, Nina's been specially trained to do this.
0:06:08 > 0:06:11Never play with electricity yourself.
0:06:11 > 0:06:12I'll turn the lights down.
0:06:14 > 0:06:17Now watch closely as I turn it on.
0:06:17 > 0:06:20ELECTRICITY BUZZES
0:06:24 > 0:06:28Ha-ha-ha! And that's electricity moving.
0:06:28 > 0:06:30Come back and I'll turn the lights back up.
0:06:32 > 0:06:37So, we've learnt that electricity makes things in our homes work.
0:06:37 > 0:06:39But we still don't know where it comes from.
0:06:39 > 0:06:43We need to take a trip to a special station to find out. Let's go.
0:06:48 > 0:06:51Where do you think we're going today?
0:06:51 > 0:06:53Nina said we were going to a station.
0:06:53 > 0:06:57Oh, oh, oh, maybe it's a train station.
0:06:57 > 0:07:00Brilliant! Choo-choo!
0:07:00 > 0:07:03Well, it looks like we've reached our stop.
0:07:05 > 0:07:08Here we are at a power station.
0:07:08 > 0:07:11A power station is where they make electricity
0:07:11 > 0:07:16and inside this big tube is where electricity is actually made.
0:07:16 > 0:07:18I'll show you what's inside on here.
0:07:21 > 0:07:24This bit in the middle is called a magnet.
0:07:24 > 0:07:29- Do you know what a magnet is?- Yes, it sticks to metal.- You're right.
0:07:29 > 0:07:33A magnet? Like people put on their fridges, Nina?
0:07:33 > 0:07:37Yes, they're like the magnets people put on their fridges.
0:07:37 > 0:07:40But this is a lot bigger. And I've got some magnets here.
0:07:43 > 0:07:46N, I, N, A
0:07:46 > 0:07:48- spells...?- BOTH: Nina!
0:07:48 > 0:07:52But that's not the only clever thing that magnets can do.
0:07:52 > 0:07:55Magnets can also make electricity.
0:07:55 > 0:07:57How, Nina?
0:07:57 > 0:08:01The magnet is in the middle of some circles of wire
0:08:01 > 0:08:04and it's spinning round and round
0:08:04 > 0:08:07and as that magnet spins round, it makes electricity.
0:08:07 > 0:08:12This power station actually makes enough electricity for a whole city.
0:08:12 > 0:08:16Oh! That's a lot of electricity, Nina.
0:08:16 > 0:08:18Let's go somewhere quieter to find out more.
0:08:21 > 0:08:24We are going to make our very own electricity,
0:08:24 > 0:08:26just like the power station does downstairs.
0:08:26 > 0:08:30Remember, you should never try this yourself at home.
0:08:30 > 0:08:33Electricity is dangerous.
0:08:33 > 0:08:35I've made one of these for each of us.
0:08:35 > 0:08:38If you have a look inside, you can see the magnets
0:08:38 > 0:08:42that will spin round. And on the outside, lots of circles of wire.
0:08:42 > 0:08:47And these are just like the machines downstairs but a lot smaller.
0:08:47 > 0:08:50To show that we really are making electricity,
0:08:50 > 0:08:53we've attached them to these light bulbs.
0:08:53 > 0:08:58If those light bulbs light up, we know that we've made electricity.
0:08:58 > 0:09:00OK, it's time to see if it works.
0:09:00 > 0:09:04Let's see if we can spin the magnet inside the wire fast enough
0:09:04 > 0:09:07to make enough electricity to light up the light bulbs.
0:09:07 > 0:09:10OK, three, two, one, go!
0:09:15 > 0:09:16You can do it.
0:09:19 > 0:09:23The lights have come on! Yay! We've made electricity!
0:09:23 > 0:09:24ALL: Hurray!
0:09:24 > 0:09:26Well done, girls.
0:09:26 > 0:09:30This is how the power station makes electricity, too.
0:09:30 > 0:09:34But their magnet and wire is much bigger so it can make a lot more.
0:09:34 > 0:09:38We've just made a tiny, tiny amount of electricity here,
0:09:38 > 0:09:41so small that it's safe to be near.
0:09:41 > 0:09:45But we must remember that much more electricity comes into our homes,
0:09:45 > 0:09:48so we should always be very, very careful.
0:09:48 > 0:09:50Oh! Do you see what has happened
0:09:50 > 0:09:52since we've stopped spinning the magnets?
0:09:52 > 0:09:54The light has gone off.
0:09:54 > 0:09:58And that's because the magnets have stopped moving.
0:09:58 > 0:10:01Magnets need to keep moving to make electricity.
0:10:01 > 0:10:05I wonder how this power station keeps the magnets moving
0:10:05 > 0:10:07all the time. Let's find out.
0:10:08 > 0:10:11You asked, where does electricity come from?
0:10:11 > 0:10:14We've discovered that electricity can be made
0:10:14 > 0:10:18by spinning a magnet around inside circles of wire.
0:10:18 > 0:10:21We also found out that magnets need to keep moving
0:10:21 > 0:10:25to make electricity. But what keeps the magnet moving?
0:10:25 > 0:10:29This power station uses water and there's lots of it, isn't there?
0:10:29 > 0:10:31Yes, lots.
0:10:31 > 0:10:33So let's do an experiment.
0:10:33 > 0:10:37In front of us here we have some water wheels.
0:10:37 > 0:10:40What do you think will happen if we pour some water on to them?
0:10:40 > 0:10:42They'll get very wet, obviously, Nina.
0:10:42 > 0:10:47Yes, they will get wet, Felix. But that's not all. What else?
0:10:47 > 0:10:50- It will spin around. - OK, well, let's see.
0:10:50 > 0:10:52OK.
0:10:53 > 0:10:55Yay, you're right, it's spinning!
0:10:55 > 0:10:59And that's because as the water pours onto it,
0:10:59 > 0:11:05it catches in these ridges and pushes the wheel round.
0:11:05 > 0:11:09This power station uses water in exactly the same way.
0:11:09 > 0:11:12The water from up here is poured down big pipes.
0:11:12 > 0:11:16It spins a big wheel and that wheel makes the magnet spin round.
0:11:16 > 0:11:19Because there is lots of water here,
0:11:19 > 0:11:22it can keep the magnet spinning for a long time.
0:11:22 > 0:11:27- And that means...? - Lots of electricity.- You are right.
0:11:27 > 0:11:30Water and electricity are very dangerous together
0:11:30 > 0:11:33but this power station makes sure they don't touch.
0:11:33 > 0:11:36There are other ways to keep the magnets spinning
0:11:36 > 0:11:40to make electricity. Some power stations use water like this one,
0:11:40 > 0:11:42and some use steam and some wind.
0:11:42 > 0:11:45It takes a lot of effort to make electricity
0:11:45 > 0:11:46so we shouldn't waste it.
0:11:46 > 0:11:50We should always turn things off if we're not using them.
0:11:53 > 0:11:56Your question was, where does electricity come from?
0:11:56 > 0:11:58I think we've answered it.
0:11:58 > 0:12:01We found out that engineers make electricity by spinning
0:12:01 > 0:12:04a magnet inside circles of wire.
0:12:04 > 0:12:08Magnets are kept spinning at this power station using water.
0:12:08 > 0:12:12- I hope that's answered your question.- BOTH: Thanks, Nina.
0:12:19 > 0:12:20Ooh.
0:12:21 > 0:12:24That's the electricity working.
0:12:25 > 0:12:29If you want to know more about the science and engineering
0:12:29 > 0:12:31that's all around us, visit the Nina section
0:12:31 > 0:12:33on the CBeebies website. Have fun.
0:12:33 > 0:12:37- Pulling.- Pushing.- Twisting.- Mixing. - Drilling.- Squeezing.- Floating.
0:12:37 > 0:12:42# Go engineering, go engineering
0:12:42 > 0:12:45# When you need to fly it Make it, shape it
0:12:47 > 0:12:51# Go engineering, go engineering
0:12:51 > 0:12:54# When you want to build Go engineering
0:12:54 > 0:12:56# Engineering
0:12:56 > 0:13:00# When you've got to solve a problem But you don't know how to do it
0:13:00 > 0:13:03# It's time to go engineering
0:13:03 > 0:13:05# Engineering!
0:13:05 > 0:13:09# When you want to lift it Stick it, pump it, mend it
0:13:09 > 0:13:13# It's time to go engineering
0:13:13 > 0:13:14# Engineering
0:13:14 > 0:13:16# Go engineering
0:13:16 > 0:13:19# Go engineering
0:13:19 > 0:13:22# When you need to fly it Make it, shape it
0:13:22 > 0:13:24# Engineering
0:13:24 > 0:13:28# Go engineering, go engineering
0:13:28 > 0:13:31# When you want to build Go engineering. #
0:13:32 > 0:13:35ALL: Go engineering!
0:13:35 > 0:13:41It's been such a great day, man. It was electric.
0:13:41 > 0:13:43I've had a brilliant day.
0:13:43 > 0:13:47Inside the power station was the noisiest!
0:13:47 > 0:13:50It's been a marvellous day.
0:13:50 > 0:13:53I liked it when everyone made their own electricity.
0:13:53 > 0:13:55That was very clever.
0:13:55 > 0:13:58And remember, engineers help to build the world around us.
0:13:58 > 0:14:01They make things work and use science to solve problems.
0:14:01 > 0:14:03See you again soon. Bye.
0:14:03 > 0:14:05ALL: Bye!
0:14:05 > 0:14:08Subtitles by Red Bee Media Ltd