0:00:34 > 0:00:37I think just a tiny bit more of this, and we should have it about...
0:00:37 > 0:00:39here!
0:00:41 > 0:00:43I meant that. That's how that was supposed to go.
0:00:43 > 0:00:45POLICE SIRENS
0:00:45 > 0:00:48Yeah, they're turning up just to look because it was so interesting.
0:00:48 > 0:00:50Anyway, hello!
0:00:53 > 0:00:57I'm Richard, and this is my Blast Lab, my top-secret science facility.
0:00:57 > 0:01:00If any of you mention this place to your parents, I'll come over
0:01:00 > 0:01:04to your house and gunge you for reasons of national security.
0:01:04 > 0:01:07I've invited two carefully selected teams to take on
0:01:07 > 0:01:10a series of scientific challenges. The team with the greatest skill,
0:01:10 > 0:01:14knowledge and intelligence will be walking away with exciting prizes.
0:01:14 > 0:01:16Let's see what's in store today.
0:01:29 > 0:01:33I usually have a crack team of SAS officers guarding this lab
0:01:33 > 0:01:37from intruders, but they cancelled at the last minute today, because
0:01:37 > 0:01:42apparently they need to do some electrical work back at the SAS HQ.
0:01:42 > 0:01:45How many SAS men does it take to change a light bulb?
0:01:45 > 0:01:46Well, 12 apparently.
0:01:46 > 0:01:49Luckily for me, I have a relative who's trained in martial arts.
0:01:49 > 0:01:54It's not my judo brother or karate mum, it is my Ninja Nan.
0:01:54 > 0:01:56CHEERING AND APPLAUSE
0:02:05 > 0:02:08Ninja Nan. Thanks for standing in.
0:02:08 > 0:02:11She might look fragile, but she's a fully-trained Ninja.
0:02:11 > 0:02:15THWACKS AND SLAPS
0:02:15 > 0:02:18Yeah. Take your place in security, please, Nan.
0:02:18 > 0:02:21Nan! Take your place in security. Thank you. Thank you.
0:02:21 > 0:02:25Don't make any sudden movements when she's around
0:02:25 > 0:02:27or she'll be on you like a cheetah.
0:02:27 > 0:02:31Not one of those fast cheetahs, a slow, but lethal, cheetah.
0:02:31 > 0:02:33There she goes.
0:02:33 > 0:02:38She is deadly, though. She is! Nan, are you settled into security yet?
0:02:38 > 0:02:41Are you in position? There she is.
0:02:41 > 0:02:45She'll get settled into her security chair. Sorry, into her Ninja bag
0:02:45 > 0:02:49for Ninja knitting. Keeps her occupied. Stops her being dangerous.
0:02:49 > 0:02:52While she gets her knitting going, let's have a look at who's
0:02:52 > 0:02:57trying to get into my lab today. It should be a bunch of people.
0:02:57 > 0:02:59Yeah, yeah, yeah, you see. You applaud.
0:02:59 > 0:03:02You guys all say you're the Yellow Team, don't you?
0:03:02 > 0:03:05But are you? We can't be too sure. This is a top-secret lab.
0:03:05 > 0:03:08So before I can let you through security I have to run
0:03:08 > 0:03:10some checks on you from my security file.
0:03:10 > 0:03:14- Identify yourselves by name, please. - Alice.- William.- Bethan.
0:03:14 > 0:03:18Alice. William. Bethan. That checks out with what I've got here.
0:03:18 > 0:03:23It also says on your security file, hidden talent,
0:03:23 > 0:03:27- Bethan, you can use your foot as a telephone?- Yeah, I can.
0:03:27 > 0:03:30Go on, then. If you'd do that for us.
0:03:30 > 0:03:32Ding, a-ding, a-ling. Hello?
0:03:32 > 0:03:36That's her foot used as a phone. You're cleared through security.
0:03:36 > 0:03:41Come through to the lab, please. Mind Ninja Nan. Ready to spring.
0:03:41 > 0:03:45Welcome. That confirms it, then. You are cleared through security.
0:03:45 > 0:03:47You are our Yellow Team. Where are you from?
0:03:47 > 0:03:51ALL: Isle of Wight and we are...
0:03:51 > 0:03:55# ABW Question mark. #
0:03:55 > 0:03:59Good grief. You've worked out a name and a dance. Waste of time, really.
0:03:59 > 0:04:02You are the Yellow Team. That's that. Welcome to the lab.
0:04:02 > 0:04:05There should somewhere in there be a bunch of people
0:04:05 > 0:04:07claiming to be the Red Team. Hello.
0:04:07 > 0:04:10CHEERING AND APPLAUSE
0:04:10 > 0:04:13Don't get excited, they could be anybody. Let's prove they are
0:04:13 > 0:04:18- who they say. Identify yourselves. - Elena.- Nathan.- Josh.
0:04:18 > 0:04:22Elena. Nathan. Josh. That checks out. Now, your hidden talent.
0:04:22 > 0:04:25It says here, Josh, you're going to do something for us but,
0:04:25 > 0:04:27hold on, don't move a muscle.
0:04:27 > 0:04:31It says you can do martial arts. With Ninja Nan in the room anything
0:04:31 > 0:04:36could happen. I've got a Lab Rat securing her, cordoning her off.
0:04:36 > 0:04:39I reckon you're safe to demonstrate your martial arts
0:04:39 > 0:04:44- without being torn apart by Ninja Nan.- What can you do for us?
0:04:44 > 0:04:48Ooh. Ooh, right. I'd say that's some martial arts right there.
0:04:48 > 0:04:50You're cleared through security. Come on in.
0:04:50 > 0:04:55CHEERING AND APPLAUSE
0:04:55 > 0:04:59Josh, it's difficult to describe the danger you were in with Ninja Nan.
0:04:59 > 0:05:01Did you not sense the martial presence of her?
0:05:01 > 0:05:04OK, she keeps it well hidden. She really does.
0:05:04 > 0:05:06Welcome to the Blast Lab. Where are you from?
0:05:06 > 0:05:10- ALL: Mansfield, and we are... - N...- E...- ...J.- ALL:Woo!
0:05:10 > 0:05:14That's elaborate and unnecessary because you are the Red Team.
0:05:14 > 0:05:17That's your team name. Welcome to the lab. Both teams,
0:05:17 > 0:05:20time for you to get into position, ready for the first game.
0:05:20 > 0:05:23Go and make yourselves comfortable. To help me with the first round
0:05:23 > 0:05:27I'd like to welcome a special friend of mine. It is Oliver.
0:05:44 > 0:05:47Oliver has the very latest state of the art
0:05:47 > 0:05:50factual navigation system, or FACTNAV for short,
0:05:50 > 0:05:54designed to be the smartest on board science computer ever seen.
0:05:54 > 0:05:57But I built it myself and I think I wired something up wrong,
0:05:57 > 0:06:00because every now and then it comes up with a fact
0:06:00 > 0:06:02that is totally false.
0:06:02 > 0:06:05Thankfully, Oliver knows what's what and can spot the porky pies.
0:06:05 > 0:06:08The thing is, can our two teams?
0:06:08 > 0:06:10So I will give each team a fact.
0:06:10 > 0:06:12If it is true, Oliver will do this.
0:06:12 > 0:06:15HORNS AND SIRENS
0:06:15 > 0:06:17And if it's false, Oliver will do this.
0:06:17 > 0:06:19FOGHORN
0:06:19 > 0:06:21OK, teams. It's clear enough, I think.
0:06:21 > 0:06:24You understand the rules here. Right, one fact each.
0:06:24 > 0:06:26Red, you're going first.
0:06:26 > 0:06:29Here's your fact, tell me whether this is true or false.
0:06:29 > 0:06:32A trillion tonnes of the world's water
0:06:32 > 0:06:35evaporates each day in the sun.
0:06:36 > 0:06:40Evaporates? Have a chat and a think. Work it out. You never know what one
0:06:40 > 0:06:43of you might know that might help. I'll ask the audience if it is
0:06:43 > 0:06:45true or false. What do you think?
0:06:45 > 0:06:49SHOUTING
0:06:49 > 0:06:52A fair few trues, but quite a few false there as well.
0:06:52 > 0:06:56A few not believing that. Down here, what do we think? True or false?
0:06:56 > 0:06:58OK, I reckon it's a mixed bag from the audience.
0:06:58 > 0:07:02Don't go by them anyway, because...well, look at them.
0:07:02 > 0:07:04What do you think for yourselves?
0:07:04 > 0:07:07- We think true.- You think it's true that a trillion tonnes of the
0:07:07 > 0:07:10world's water does evaporate every day in the sun.
0:07:10 > 0:07:12Oliver, is it true or false?
0:07:12 > 0:07:14HORNS AND SIRENS
0:07:14 > 0:07:17It's true! That is your first point. Well done. Moist air rises.
0:07:17 > 0:07:20As the air cools, water vapour begins to condense out of it.
0:07:20 > 0:07:22That's where clouds come from.
0:07:22 > 0:07:25After the water droplets get too big to stay in the cloud,
0:07:25 > 0:07:28they become heavier. They can collide with each other.
0:07:28 > 0:07:32That causes rain. Or to give it's posh name, precipitation.
0:07:32 > 0:07:35OK, Yellow Team, here comes your science fact.
0:07:35 > 0:07:37Is this true or false?
0:07:37 > 0:07:40A bolt of lightning is so hot
0:07:40 > 0:07:44that if it hits sand, it can turn it into glass.
0:07:44 > 0:07:49A bolt of lightning hits sand, it can turn the sand into glass.
0:07:49 > 0:07:52Have a chat. A think. Everything you think might help, discuss it.
0:07:52 > 0:07:56Meanwhile, audience, what do you think? True or false?
0:07:56 > 0:07:58SHOUTING
0:07:58 > 0:08:00A real mixed bag again.
0:08:00 > 0:08:03No obvious real help from the audience. What do you think?
0:08:03 > 0:08:06- True.- You think it's true? You think that if a bolt of lightning
0:08:06 > 0:08:10hits the sand it does turn it into glass. Oliver, is it true or false?
0:08:10 > 0:08:12HORNS AND SIRENS
0:08:12 > 0:08:15It's true! That's a point for Yellow Team as well. Well done.
0:08:15 > 0:08:20Actually, it makes glass rods in the sand, called fulgurites.
0:08:20 > 0:08:23They can be all knobbly, like branches, and the amount of energy
0:08:23 > 0:08:27required to do that? Estimates vary. But the temperature, they reckon,
0:08:27 > 0:08:30could be 4,000 degrees C. So it's really toasty.
0:08:30 > 0:08:34One last question for both teams. This time it really is a question.
0:08:34 > 0:08:37I don't want you to tell me if this is true or false, just an answer.
0:08:37 > 0:08:39Write it down on these boards
0:08:39 > 0:08:44and I will give a point to whichever team is closest to the answer.
0:08:44 > 0:08:51If you were to drive a car at 60mph towards the sun, for 24 hours a day,
0:08:51 > 0:08:54how long would it take you to reach the sun?
0:08:54 > 0:08:57Have a chat, have a think. If you were to drive a car 60mph
0:08:57 > 0:09:03for 24 hours, how long would it take you to reach the sun?
0:09:03 > 0:09:05Audience, any suggestions for that?
0:09:05 > 0:09:08I'll bring my mug-tree mic. It's disguised.
0:09:08 > 0:09:12Still, nobody likes it. What do you think?
0:09:12 > 0:09:14Is it a trick question?
0:09:14 > 0:09:18So you don't trust me? You come to my lab and you don't trust me.
0:09:18 > 0:09:23How can it be a trick question? Because there is no road to the sun?
0:09:23 > 0:09:26You have a very good point. But it's not a trick question.
0:09:26 > 0:09:28There is an answer. Yes?
0:09:28 > 0:09:31It would be over 1,500 miles.
0:09:31 > 0:09:33I need it in time. I need time.
0:09:33 > 0:09:36How long it would take.
0:09:36 > 0:09:39I need this answer. Here's a clue.
0:09:39 > 0:09:43It's in years, quite a long time. What do you think?
0:09:43 > 0:09:44Would you die on the way?
0:09:44 > 0:09:46Yes, you'd get really hot.
0:09:46 > 0:09:51I'm not suggesting that you jump in Oliver and drive to the sun.
0:09:51 > 0:09:54But how long do you reckon in years? Really hot...
0:09:54 > 0:09:56Ten years?
0:09:56 > 0:09:58Ten years? It's a tricky one.
0:09:58 > 0:10:01To be honest, I don't know the answer off the top of my head.
0:10:01 > 0:10:05- I would probably be impossible. - Look, can we establish, audience,
0:10:05 > 0:10:08I know it's tricky! I'm not suggesting we all set off for
0:10:08 > 0:10:10the sun on holiday. Theoretically.
0:10:10 > 0:10:14That means we're not actually going to do it, but theoretically.
0:10:14 > 0:10:17The distance the sun is from the earth is the key factor.
0:10:17 > 0:10:19How long would it take to drive there?
0:10:19 > 0:10:22We're not going to get an accurate answer here.
0:10:22 > 0:10:26Maybe we will, though, from our teams. Are you feeling clever?
0:10:26 > 0:10:30Good, right. I need some answers, then. Let's have a look.
0:10:30 > 0:10:32In years, how long do you think?
0:10:32 > 0:10:34Reds, you've written down five years.
0:10:34 > 0:10:37Yellows, you've written down 950 years.
0:10:37 > 0:10:41Quite a range in your answers there, from five years to 950.
0:10:41 > 0:10:43The real answer is...
0:10:43 > 0:10:49It would take you 177 years, which means the Red Team win the point.
0:10:49 > 0:10:51Well done.
0:10:51 > 0:10:55If you were thinking of going, anybody, it's actually
0:10:55 > 0:11:011,550,520 hours of driving, because earth is, more or less,
0:11:01 > 0:11:0792,955,807.3 miles from the sun.
0:11:07 > 0:11:11That means Red Team is in the lead. Two points to Yellows' one.
0:11:11 > 0:11:13Well done to both teams.
0:11:29 > 0:11:33That's all to come. Right now, it's time to play Mini Science.
0:11:33 > 0:11:37Our contestants will use household objects to conduct complex
0:11:37 > 0:11:41scientific experiments. To help me is my old school teacher, Mini Miss.
0:11:41 > 0:11:43CHEERING
0:11:44 > 0:11:47- What have you been up to, Miss? - I helped Stephen Hawking
0:11:47 > 0:11:50with his physics homework. He really isn't very good.
0:11:50 > 0:11:53I should explain that I had an accident with my time machine,
0:11:53 > 0:11:57and to cut a long story short, my 65-year-old science teacher
0:11:57 > 0:12:01has come back as a ten-year-old. She's now the only teacher who can
0:12:01 > 0:12:04- get away with travelling to school in Heelys.- Hurry up!
0:12:04 > 0:12:07My quantum theories aren't going to write themselves!
0:12:07 > 0:12:09Sorry, Miss. What's on the curriculum today?
0:12:09 > 0:12:15- Today we're looking at centrifugal force.- Of course we are. I knew that.
0:12:15 > 0:12:18Teams have to master the use of it in a game called Funnel Force.
0:12:18 > 0:12:22You have to spin a ball in a funnel without stopping.
0:12:23 > 0:12:25OK, that's looks tricky.
0:12:25 > 0:12:28Whoever gets the most amount of balls in their cylinder
0:12:28 > 0:12:29wins the game.
0:12:29 > 0:12:32That's not that easy because each team has to do this whilst
0:12:32 > 0:12:34racing around an obstacle course.
0:12:34 > 0:12:38- I shall demonstrate, if that's OK with you, Miss.- OK, then.
0:12:38 > 0:12:40I've brought my own, which I specially prepared.
0:12:40 > 0:12:43- No, I know. I happen to be very good at this.- Richard.
0:12:43 > 0:12:46I know, it's going so fast you can hardly see it move.
0:12:46 > 0:12:48- You'd think it was stuck.- Richard!
0:12:48 > 0:12:51I'll get on with it. This is what you do, teams. Pay attention.
0:12:51 > 0:12:53Across the Bridge Of Destiny,
0:12:53 > 0:12:55sticking to the left-hand side. This is difficult.
0:12:55 > 0:12:59If the ball falls out and lands in the septic tank, leave it,
0:12:59 > 0:13:02you don't want it back, trust me! That ball is out of play.
0:13:02 > 0:13:05Then turn round onto the other side of the bridge,
0:13:05 > 0:13:07dash back and the next team member goes.
0:13:07 > 0:13:10If you get across the bridge successfully, you carry on,
0:13:10 > 0:13:13down the stairs, here, and around to the high jump.
0:13:13 > 0:13:16If the ball falls out at any point from hereon in,
0:13:16 > 0:13:19stop exactly where you are. Freeze, don't move.
0:13:19 > 0:13:22A Lab Rat will give you another ball to put in the funnel.
0:13:22 > 0:13:26You can't move until it's spinning again. Once it's up and spinning,
0:13:26 > 0:13:29you carry on. Past my reinvention of the bicycle. Do you like that?
0:13:29 > 0:13:32It never worked. Across the Stepping Stones of Science.
0:13:32 > 0:13:35Drop down to the end. Then the Yellow Team stop here.
0:13:35 > 0:13:38Put their ball in that beacon. The Red Team in that one.
0:13:38 > 0:13:41Then you return back across the bridge. When you get back to
0:13:41 > 0:13:45your base, you high-five the next team member and they can set off.
0:13:45 > 0:13:48- Does everybody understand the rules? - ALL: Yes!
0:13:48 > 0:13:52We will be watching. If the ball comes out of the funnel, freeze,
0:13:52 > 0:13:54a Lab Rat will give you another one.
0:13:54 > 0:13:57You can't set off until it's spinning again. OK?
0:13:57 > 0:13:59You have some time to do this
0:13:59 > 0:14:02and that time starts...now!
0:14:02 > 0:14:03CHEERING
0:14:03 > 0:14:05Use the force.
0:14:05 > 0:14:07Absolute concentration shown on
0:14:07 > 0:14:10the faces of both competitors here today.
0:14:10 > 0:14:12They're determined not to mess up.
0:14:12 > 0:14:18Ah. Like that. The red ball is down and the yellow ball is down as well.
0:14:18 > 0:14:23Straight away, problems on the Bridge Of Destiny.
0:14:23 > 0:14:26Both of the balls ending up in the septic tank.
0:14:26 > 0:14:28But they're back out there already,
0:14:28 > 0:14:31making short work of the bridge this time.
0:14:31 > 0:14:34Reds lose another ball, But as they're over the bridge,
0:14:34 > 0:14:36one of my Lab Rats will get them going again
0:14:36 > 0:14:38from where it was dropped.
0:14:41 > 0:14:42A spill from the Yellows.
0:14:42 > 0:14:45It's obviously not as easy as I made it look,
0:14:45 > 0:14:49but then I'm a professional. And it's neck-and-neck as they
0:14:49 > 0:14:52round the summertime clock corner and make their way
0:14:52 > 0:14:55under the limbo pole. Good ball control there by both teams.
0:14:56 > 0:14:59Reds have their first score, and almost simultaneously,
0:14:59 > 0:15:03a big drop from the yellows. That could cost them.
0:15:03 > 0:15:04She recovers well,
0:15:04 > 0:15:09scores for the Yellows, and heads back to her waiting team-mates.
0:15:09 > 0:15:13CHEERING
0:15:16 > 0:15:20Some absolutely fabulous play from the Red Team right now.
0:15:20 > 0:15:23Really, really controlled. Elena, I think,
0:15:23 > 0:15:28has a particular skill for this. She has mastered the force.
0:15:30 > 0:15:33She lost it just when I said that, that was my fault!
0:15:33 > 0:15:37The Yellows look to have made up grand, here. Can they catch
0:15:37 > 0:15:42the Reds, who looked to be running away with it up to this point?
0:15:47 > 0:15:50There's a lot of centrifugal force going on around us all the time.
0:15:50 > 0:15:52When a car turns left or right,
0:15:52 > 0:15:56you'll feel it pushing you the other way. If you spin something
0:15:56 > 0:15:59on the end of a piece of rope, that is centrifugal force.
0:15:59 > 0:16:03The thing that's spinning wants to keep going on in a straight line,
0:16:03 > 0:16:06but it can't because the rope is holding it back. This is the same.
0:16:06 > 0:16:10The funnel is holding the ball in. It's centrifugal force that explains
0:16:10 > 0:16:14why you can stay in a rollercoaster when it does loop the loop,
0:16:14 > 0:16:17how they do the motorcycle wall of death, and why the clothes
0:16:17 > 0:16:20stick to the outside of the drum in a washing machine.
0:16:22 > 0:16:26'Five, four, three, two, one...'
0:16:27 > 0:16:30And your time is up!
0:16:30 > 0:16:33Some great play from both teams. That was very difficult,
0:16:33 > 0:16:37mastering centrifugal force. Let's find out who has won.
0:16:37 > 0:16:39Yellow Team, three.
0:16:39 > 0:16:43Red team, I make that four for the Red Team. The Reds are the winners.
0:16:45 > 0:16:49A score now of 3-1. Congratulations, all.
0:16:49 > 0:16:52Centrifugal force doesn't just affect ping-pong balls,
0:16:52 > 0:16:55motorcycle riders and clothes in the washing machine.
0:16:55 > 0:16:57It can affect anything, even the air.
0:16:57 > 0:16:59But what about...fire?
0:17:01 > 0:17:07When man discovered fire, it changed his world, forever.
0:17:10 > 0:17:13That discovery was made millennia ago.
0:17:13 > 0:17:16This Lab Rat, on the other hand, is still trying...
0:17:16 > 0:17:19and still trying.
0:17:19 > 0:17:22As I would never let him actually handle a naked flame,
0:17:22 > 0:17:26his lack of success is no bad thing.
0:17:26 > 0:17:27But what's this?
0:17:27 > 0:17:31Matches? No, Lab Rat, no!
0:17:31 > 0:17:36No-one, especially a stupid Lab Rat, should play with matches.
0:17:36 > 0:17:40Ever! If you do, you could get burnt,
0:17:40 > 0:17:44or in this Lab Rat's case... very wet.
0:17:44 > 0:17:49This one, however, is highly trained and very responsible.
0:17:49 > 0:17:51Well, for a Lab Rat, anyway.
0:17:51 > 0:17:54He's going to try and create a tornado of fire.
0:17:56 > 0:17:58In order to produce a fire tornado,
0:17:58 > 0:18:02all we need is to create spinning air around a burning fire.
0:18:02 > 0:18:06As the fire rises it will be drawn into the spiralling air,
0:18:06 > 0:18:09creating a tall, spinning column of fire.
0:18:09 > 0:18:11So to make our own fire tornado,
0:18:11 > 0:18:15I've asked the Lab Rat to light a fire on this revolving plate.
0:18:15 > 0:18:18But will it work, or will centrifugal force
0:18:18 > 0:18:20fling the fire out of control?
0:18:20 > 0:18:23I'll stop the tape there because I want to ask, will it work? Teams?
0:18:23 > 0:18:25What do you reckon? Will this work?
0:18:25 > 0:18:29Will it have an effect? Yellow Team?
0:18:29 > 0:18:33- I think it will cave in. - You think it will cave in? OK.
0:18:33 > 0:18:36- Red team, any theories? - There's going to be a fire tornado.
0:18:36 > 0:18:39- You think there'll be a fire tornado?- Yeah.- There was a hand
0:18:39 > 0:18:43going up over there. This is my special mug-tree microphone.
0:18:43 > 0:18:47You can hang mugs on it, and it's a microphone. You're impressed!
0:18:47 > 0:18:51- Yeah.- You're not impressed, are you? - I am.- What do you think?
0:18:51 > 0:18:54I think it's just going to stay in the same place, but turn around,
0:18:54 > 0:18:58- so it looks like a tornado but actually it's not.- Right.
0:18:58 > 0:19:02So do we reckon we'll see a lot happening or only a bit happening?
0:19:02 > 0:19:04You think a lot?
0:19:04 > 0:19:08Not very much would happen, because...
0:19:08 > 0:19:11Well, it might happen, but it's not going to be
0:19:11 > 0:19:15- very powerful, if you like.- So only a bit. So let's get an idea again.
0:19:15 > 0:19:19Red Team, what to you think will happen when we spin the fire?
0:19:19 > 0:19:24- A fire tornado.- I think it will look like stream line going up.
0:19:24 > 0:19:27- Right. Yellow Team, what do you think?- I think the fire,
0:19:27 > 0:19:33the wheel will go round, but the fire's up, so it's not doing much.
0:19:33 > 0:19:36You don't think we'll see anything. You think we'll see a fire tornado.
0:19:36 > 0:19:39There's a point here. If this happens, if there is a tornado,
0:19:39 > 0:19:42if nothing happens, if you're right, you get a point.
0:19:42 > 0:19:43Let's see what happens.
0:19:44 > 0:19:48OK, here it goes. Round and round.
0:19:48 > 0:19:52And round...and round.
0:19:52 > 0:19:54Not very much happening there.
0:19:54 > 0:19:59It looks like it has not created a fire tornado.
0:20:01 > 0:20:04I don't know, having seen that. It looked borderline to me.
0:20:04 > 0:20:08Do we think it had an effect of or not?
0:20:08 > 0:20:11You could see a bit. It wasn't really...not a tornado.
0:20:11 > 0:20:15I've taken an executive decision at the lowest possible level.
0:20:15 > 0:20:18It's my lab. I'll give you each a point, a point for both teams.
0:20:21 > 0:20:24It's time for us to move on to a messy, messy, mess test.
0:20:24 > 0:20:27That means both teams have to go off and get changed.
0:20:27 > 0:20:31Get changed into your protective suits, please, guys.
0:20:31 > 0:20:35There is a way we can affect the fire with centrifugal force.
0:20:35 > 0:20:38Because the air around it is being affected by centrifugal force.
0:20:38 > 0:20:42And if we can put something in the way of that air to make it spin,
0:20:42 > 0:20:46theoretically we could actually make a fire tornado.
0:20:48 > 0:20:50Right, here we go.
0:20:50 > 0:20:55Straight away, the air is pushed out by the wire grid in the way.
0:20:55 > 0:20:58So the air is spinning, and spinning
0:20:58 > 0:21:01and look, this is making the fire spin, too.
0:21:01 > 0:21:03And yes, it's producing a fire tornado.
0:21:03 > 0:21:07Perfect for roasting your marshmallows.
0:21:09 > 0:21:12I'd say that was a fire tornado, personally.
0:21:12 > 0:21:14APPLAUSE
0:21:14 > 0:21:17It wasn't huge. But it worked. Right, it's time for us to move on
0:21:17 > 0:21:19to the messy, messy, mess test.
0:21:23 > 0:21:28Which today is in the septic tank. Are you comfortable in there guys?
0:21:28 > 0:21:31- Yes.- Good. Ooh, this morning the waterworks started to overflow,
0:21:31 > 0:21:34so I offered to store some of the excess in here.
0:21:34 > 0:21:37Interestingly, I found something moving in there earlier on.
0:21:37 > 0:21:41I hit it with a spade, so I think it's dead now.
0:21:41 > 0:21:44If you do see anything, give me a yell. I still have the spade handy.
0:21:44 > 0:21:47This is the game. Hidden in the tank are discs.
0:21:47 > 0:21:49Some are like this one. Duds.
0:21:49 > 0:21:53But the ones you're after, are like these, my Lab Rat is holding up.
0:21:53 > 0:21:56They feature your team's colour and the name of a prize.
0:21:56 > 0:21:59Things like snotty slime clock. A set of robo-bugs,
0:21:59 > 0:22:02a radio-controlled airship. Lab Rat, if you'd hide those, please.
0:22:02 > 0:22:05Well, that will teach you to play with matches.
0:22:05 > 0:22:08And then get out of the septic tank. Now your job, teams, is to get
0:22:08 > 0:22:12as many of the prize discs as you can into the basket. You've got one
0:22:12 > 0:22:14for red over there. One for the yellow team here.
0:22:14 > 0:22:18The team to get the most prize discs into their basket will take home
0:22:18 > 0:22:20the prizes written on them.
0:22:20 > 0:22:23The losing team has to blow their prizes up.
0:22:23 > 0:22:26Red, you'll be starting first because you've got the most points.
0:22:26 > 0:22:29They've earned you a five second advantage.
0:22:29 > 0:22:31When you hear the first siren, you start.
0:22:31 > 0:22:35Yellow team, you can only begin when you hear the second siren.
0:22:35 > 0:22:37You have got some time to get as many prize discs
0:22:37 > 0:22:43into the basket as possible and that some time starts now!
0:22:43 > 0:22:46The Yellows remain frozen like statues
0:22:46 > 0:22:49as the Reds set to work around them.
0:22:49 > 0:22:50SIREN
0:22:50 > 0:22:53There's the second siren. The Yellows should be off,
0:22:53 > 0:22:56but they're still doing their statue impressions!
0:22:59 > 0:23:02And what's this? More confusion in the ranks with the Red Team
0:23:02 > 0:23:05unsure whether the yellow prize disc in his hand
0:23:05 > 0:23:08is actually a red disc in disguise.
0:23:08 > 0:23:12Luckily a member of the Red Team has pointed out that the disc is yellow,
0:23:12 > 0:23:15so it's probably a yellow disc. Nice one!
0:23:17 > 0:23:19They're all at it, the Yellow member, there,
0:23:19 > 0:23:22seeing a red disc and taking it for his own.
0:23:23 > 0:23:26That siren means, I don't know how to put this,
0:23:26 > 0:23:29there's more stuff on its way. On the bad side, that means
0:23:29 > 0:23:32there's more of whatever's in there about to join them.
0:23:32 > 0:23:35On the plus side, there might be more prize discs.
0:23:38 > 0:23:41A yellow disc in a yellow basket.
0:23:41 > 0:23:44We're off the mark now, at last. Another siren, and another member
0:23:44 > 0:23:48of the Yellow Team completely covered in disgusting, smelly,
0:23:48 > 0:23:51well, we don't know what the brown stuff is.
0:23:51 > 0:23:55Safe to say I wouldn't put it on my cereal in the morning!
0:24:09 > 0:24:13Hurry, teams, there's only a random amount of some time left
0:24:13 > 0:24:17on the clock, so maybe there's no some time to spare.
0:24:22 > 0:24:26Everyone putting in a supreme amount of effort here today, but it
0:24:26 > 0:24:30looks like the Yellows are turning that hard work into results.
0:24:30 > 0:24:35'Five, four, three, two, one.'
0:24:36 > 0:24:39SIRENS
0:24:39 > 0:24:43OK! Both teams! You look...nice in there.
0:24:43 > 0:24:44Time is up.
0:24:44 > 0:24:50My Lab Rats are counting up the discs to see which team has won.
0:24:50 > 0:24:53One, two, three, four, five. Well done. Five for the Reds.
0:24:53 > 0:24:57For the Yellows, we have, one, two, three, four, five...
0:24:57 > 0:25:00Six for the yellows! You're the winner!
0:25:00 > 0:25:03CHEERING AND APPLAUSE
0:25:03 > 0:25:06Yellow Team, you are the winners, so you'll each be taking home
0:25:06 > 0:25:09one of the following. What have we got, Lab Rat?
0:25:09 > 0:25:12Thank you, Ninja Nan for modelling these for us. Planetarium, each.
0:25:13 > 0:25:16- 3D globe puzzle. - CHEERING
0:25:16 > 0:25:18- A Hulk Smash-Hands. - CHEERING
0:25:18 > 0:25:20- A snotty slime clock. - CHEERING
0:25:20 > 0:25:23- A transforming robot. - CHEERING
0:25:23 > 0:25:25And a robo-spider.
0:25:25 > 0:25:28Each of you will be taking those prizes home.
0:25:28 > 0:25:30CHEERING AND APPLAUSE
0:25:30 > 0:25:34Now the slightly less cheery bit, that I really enjoy,
0:25:34 > 0:25:38because we'll find out, Reds, these are the prizes you would have won.
0:25:38 > 0:25:41You would each have taken home a 3D globe puzzle.
0:25:41 > 0:25:43AUDIENCE: Aw!
0:25:43 > 0:25:44Hulk Smash-Hands.
0:25:44 > 0:25:45AUDIENCE: Aw!
0:25:45 > 0:25:47A turbo blimp.
0:25:47 > 0:25:48AUDIENCE: Aw!
0:25:48 > 0:25:49A transforming robot.
0:25:49 > 0:25:51AUDIENCE: Aw!
0:25:51 > 0:25:52Robo-bugs.
0:25:52 > 0:25:53AUDIENCE: Aw!
0:25:53 > 0:25:56But you're not taking those home with you. Instead, Reds,
0:25:56 > 0:26:01you're going to blow your prizes up. Time for Bidet Goes Bang.
0:26:09 > 0:26:12So this is it. Reds, how you feeling right now?
0:26:12 > 0:26:16- Sad, but happy at the same time. - I think you took it very well when
0:26:16 > 0:26:18I told you you had to blow your prizes up.
0:26:18 > 0:26:21- Who's going to push the plunger? - We're all going to do it.
0:26:21 > 0:26:25- Altogether?- Yeah.- What went wrong in the game? Why did you lose?
0:26:25 > 0:26:28I think we didn't use team work, we just went for it.
0:26:28 > 0:26:31You're now going to blow your prizes up. No putting it off.
0:26:31 > 0:26:36Your prizes are in the bidet, ready to go bang. The Yellows are here,
0:26:36 > 0:26:39very pleased with themselves and with a mountain of prizes.
0:26:39 > 0:26:41Reds, this is it, the moment of truth.
0:26:41 > 0:26:45Lift the plunger and be ready. We'll give you a countdown. Lift it up.
0:26:45 > 0:26:49- Ready?- Five, four, three, two, one. Go!
0:26:49 > 0:26:52BANG AND SMASHING
0:26:54 > 0:26:57That is all we've got time for today. We've learned all about
0:26:57 > 0:27:01tornadoes and circular motion. Although with my idiot Lab Rats
0:27:01 > 0:27:04around the place I usually feel like I'm going round in circles anyway.
0:27:04 > 0:27:06See you next time.
0:27:15 > 0:27:18Blast Lab was recorded before a live studio audience.
0:27:18 > 0:27:21No Lab Rat was harmed during the filming.
0:27:21 > 0:27:23That's what I told their mums, anyway!
0:27:31 > 0:27:35Subtitles by Red Bee Media Ltd
0:27:35 > 0:27:38Email subtitling@bbc.co.uk