0:00:35 > 0:00:37- Hello! - ALARM SOUNDS
0:00:37 > 0:00:41Oh, new security system. It must be my mobile phone in the sensors.
0:00:41 > 0:00:43- Right, thank you. Oh! - ALARM SOUNDS
0:00:43 > 0:00:47Do I have to take everything out of my pockets? Hang on...
0:00:48 > 0:00:50Could be that.
0:00:51 > 0:00:53ALARM SOUNDS
0:00:53 > 0:00:56I hate it when you have to just keep removing everything...
0:00:56 > 0:01:00Maybe that, always be safe. OK.
0:01:00 > 0:01:02ALARM SOUNDS
0:01:02 > 0:01:05Look, I'm running out of things. I have nothing else in my pockets
0:01:05 > 0:01:08to get through security into my own lab, unless,
0:01:08 > 0:01:11hang on, I left this in last night.
0:01:12 > 0:01:15Sorry. I forgot to take that out, thought I had.
0:01:15 > 0:01:17Right.
0:01:17 > 0:01:21Thank you. Hello, I'm Richard Hammond, this is my Blast Lab.
0:01:24 > 0:01:27Now, I have invited two teams of scientists into my lab
0:01:27 > 0:01:31to take part in a series of top-level scientific challenges.
0:01:31 > 0:01:33If they are successful, they will win prizes.
0:01:33 > 0:01:35If they are unsuccessful,
0:01:35 > 0:01:38they'll win prizes but they'll have to blow them all up.
0:01:38 > 0:01:40Let's have a look at what's in store.
0:01:55 > 0:01:57It is, of course, essential
0:01:57 > 0:02:01that my top secret underground lab is guarded constantly,
0:02:01 > 0:02:05which is why I have a team of top flight SAS guards permanently here.
0:02:05 > 0:02:08But they're not here today sadly.
0:02:08 > 0:02:10It turns out it's an SAS Bank Holiday
0:02:10 > 0:02:12and they don't work on Bank Holidays.
0:02:12 > 0:02:16But it's OK because I have replaced them today with a woman
0:02:16 > 0:02:19who made Bruce Lee cry, she is my Ninja Nan.
0:02:29 > 0:02:32Ninja Nan, thank you for standing in.
0:02:32 > 0:02:36I know she looks fragile. She is in fact a fully-trained ninja.
0:02:40 > 0:02:41There you go, I told you.
0:02:41 > 0:02:44Ninja Nan, if you'd like to take your...
0:02:44 > 0:02:47Oh, she's also quite deaf. Ninja Nan! Ninja Nan! Thank you.
0:02:47 > 0:02:51Take your place in security and guard us all.
0:02:51 > 0:02:52There she goes, look at her move.
0:02:52 > 0:02:55Speed. It's quite deceptive I know.
0:02:55 > 0:02:57She looks slow, but she's really shifting.
0:02:57 > 0:02:59Ninja Nan, are you in security?
0:02:59 > 0:03:01There she is, there, moving with ninja speed,
0:03:01 > 0:03:04pulling her little tartan ninja shopping trolley.
0:03:04 > 0:03:07Settling in, good to have her there. Oh, good grief.
0:03:07 > 0:03:10Oh, you see, she is Green-Fingered Nan, really.
0:03:10 > 0:03:14She beat everyone at last month's vegetable growing competition.
0:03:14 > 0:03:17She didn't win. That's why she beat everyone.
0:03:17 > 0:03:19Let's leave her to get settled in.
0:03:19 > 0:03:22Let's meet the bunch of people trying to get into my lab today.
0:03:22 > 0:03:25CHEERING
0:03:25 > 0:03:28Now, you claim to be the Yellow Team, yeah.
0:03:28 > 0:03:32We can't just take your word for it and let anybody in here.
0:03:32 > 0:03:35So, for security purposes, I need to check your names off.
0:03:35 > 0:03:39- Identify yourselves by name, please. - Lydia.- Nadia.
0:03:39 > 0:03:42- Maddy.- Lydia, Nadia, Maddy, that checks out.
0:03:42 > 0:03:47Now. Nadia, it says here for the hidden talent under your name,
0:03:47 > 0:03:49playing the harmonica, can you?
0:03:49 > 0:03:51- Yeah.- Prove it.
0:03:52 > 0:03:56SHE PLAYS TUNE OF WHEN THE SAINTS GO MARCHING IN
0:04:03 > 0:04:07I don't feel an album coming on but that was an harmonica being played.
0:04:07 > 0:04:09You're cleared through security, come on in!
0:04:12 > 0:04:15Sorry about the security checks, Yellow Team.
0:04:15 > 0:04:18Can't be too careful. Too many people trying to get in here.
0:04:18 > 0:04:19Where have you come from?
0:04:19 > 0:04:24Bolton and we are Hammy's Heroes! Whoo!
0:04:24 > 0:04:28You've got your own team name and it's like a compliment to me.
0:04:28 > 0:04:30It makes no difference because you are Yellow Team.
0:04:30 > 0:04:34OK. Let's meet the people claiming to be the Red Team.
0:04:34 > 0:04:36Let's have a look at you.
0:04:38 > 0:04:41You say you are the Red Team.
0:04:41 > 0:04:44Identify yourselves by names, please, so I can check, you are?
0:04:44 > 0:04:47- Archie.- Christy.- Michael.
0:04:47 > 0:04:50Archie, Christy and Michael. Yeah, that checks out.
0:04:50 > 0:04:53Under hidden talent, Michael, it says you are top three junior
0:04:53 > 0:04:55in table tennis in Northern Ireland.
0:04:55 > 0:04:59I'd say by those skills... Yeah, I'd say you probably are.
0:04:59 > 0:05:01Right, you're cleared through security. Come in.
0:05:05 > 0:05:07Hello, Red Team, where are you from?
0:05:07 > 0:05:10We are from Northern Ireland and we are the business!
0:05:10 > 0:05:13No, you're not, you're the Red Team. I'll tell you something.
0:05:13 > 0:05:15We're in a boys' team, girls' team situation,
0:05:15 > 0:05:18which generally means the competition
0:05:18 > 0:05:21is quite high and fierce. Well, good luck, both teams.
0:05:21 > 0:05:24Get settled in, please, we are about to play Round One.
0:05:25 > 0:05:28Boys and girls, that always means some competition.
0:05:28 > 0:05:33I'd like you to meet a good friend of mine, he's the lab technician with the faulty ignition, Oliver.
0:05:49 > 0:05:50CHEERING
0:05:50 > 0:05:52Oliver is of course fitted with
0:05:52 > 0:05:56the very latest state-of-the-art fact nav.
0:05:56 > 0:05:59I actually fitted it myself. In fact, I told Ninja Nan
0:05:59 > 0:06:03it was so easy to do, I could fit it with one arm tied behind my back.
0:06:03 > 0:06:06I couldn't, and as a result, well, it doesn't work very well.
0:06:06 > 0:06:08A lot of the facts are not correct,
0:06:08 > 0:06:10so I need our two teams to tell me which is which.
0:06:10 > 0:06:12Once they've told me whether they think
0:06:12 > 0:06:16their science fact is true or false, Oliver will tell us if it really is.
0:06:16 > 0:06:20- If it's true he'll do this... - CAR BEEPS, ALARM SOUNDS TUNEFULLY
0:06:20 > 0:06:24- And if it's false he'll do this... - HORN SOUNDS GLUMLY
0:06:24 > 0:06:28OK, Yellow Team, Red Team, your first chance to earn some points.
0:06:28 > 0:06:32Reds, you go first, tell me whether this is true or false.
0:06:32 > 0:06:36The sun is five times hotter than a lightning bolt.
0:06:36 > 0:06:38Is that true or false? Have a chat, a think.
0:06:38 > 0:06:41Audience, what do you think, is that true or false?
0:06:41 > 0:06:42AUDIENCE: True!
0:06:44 > 0:06:48I'd say pretty overwhelming response from the audience, there,
0:06:48 > 0:06:51saying it's true. But, team, what do you reckon?
0:06:51 > 0:06:55- False.- You think it's false. Oliver, is it true or false?
0:06:55 > 0:06:57- HORN SOUNDS GLUMLY - It is false.
0:06:57 > 0:06:59That's a point for the Red Team.
0:06:59 > 0:07:01CHEERING
0:07:01 > 0:07:04In actual fact, a lightning bolt is five times hotter than the sun
0:07:04 > 0:07:09and the surface of the sun is over 5,500 degrees Celsius,
0:07:09 > 0:07:10which is pretty toasty.
0:07:10 > 0:07:12Right, Yellows, your science fact,
0:07:12 > 0:07:15here it is, tell me whether this is true or false.
0:07:15 > 0:07:21A teaspoon of a neutron star would weigh over 100 million tonnes.
0:07:21 > 0:07:25Have a think. Audience, is that true or false, what do we think?
0:07:25 > 0:07:26AUDIENCE: True!
0:07:27 > 0:07:29Quite a lot here saying true.
0:07:29 > 0:07:30Quite a lot said false
0:07:30 > 0:07:34and changed it to say true when the people next to them said true.
0:07:34 > 0:07:38So, I think this one maybe has stumped the audience a little bit.
0:07:38 > 0:07:42- Yellow Team, what do you think, true or false?- True.- You think true.
0:07:42 > 0:07:44Oliver, is it true or is it false?
0:07:44 > 0:07:48- HORNS AND ALARM SOUND EXCITEDLY - It is true, a point for Yellow Team.
0:07:48 > 0:07:49CHEERING
0:07:49 > 0:07:52So, we're on one point each.
0:07:52 > 0:07:55Amazingly that is equivalent to, and you'll have worked this out,
0:07:55 > 0:07:57I know, 12 and a half million double-decker buses.
0:07:57 > 0:08:00Neutron stars are born when large stars finish burning
0:08:00 > 0:08:04their nuclear fuel and they undergo a supernova explosion,
0:08:04 > 0:08:06which is basically a really big one.
0:08:06 > 0:08:11And it all sort of collapses in and weighs a very, very great deal.
0:08:11 > 0:08:13Third question, an actual question,
0:08:13 > 0:08:16I don't want true or false answers. I want an actual answer.
0:08:16 > 0:08:19Write it down, please. Both teams here comes your question.
0:08:19 > 0:08:21Atoms are everywhere
0:08:21 > 0:08:24but how many could you fit on a full stop?
0:08:24 > 0:08:26Have a think, have a chat.
0:08:26 > 0:08:29Audience, anybody got any theories on this? What do we think?
0:08:29 > 0:08:31I am going to talk to you using this.
0:08:31 > 0:08:33You've probably noticed, looks like a traffic cone
0:08:33 > 0:08:36but it's actually a microphone as well.
0:08:36 > 0:08:38It's cunningly hidden, it's a micro-cone. OK.
0:08:38 > 0:08:41Let's see if it works.
0:08:41 > 0:08:43What do you reckon, how many?
0:08:43 > 0:08:47- Seven.- You think seven atoms, any difference from there.
0:08:47 > 0:08:49About 13.
0:08:49 > 0:08:52That's a very precise answer. Why 13?
0:08:52 > 0:08:57- Because it looks a bit like the same. - OK.
0:08:57 > 0:09:00It looks like you could get 13 atoms on a full stop, fair enough.
0:09:00 > 0:09:03- How many atoms on a full stop? - Three or four.
0:09:03 > 0:09:06- 17.- 17. Some very precise answers from the audience.
0:09:06 > 0:09:09Admirable. Right, let's see, then,
0:09:09 > 0:09:12what our teams think because they are the ones playing for points.
0:09:12 > 0:09:16I shall put the new Blast Lab micro-cone on the step there.
0:09:16 > 0:09:18Sweep the world, that will.
0:09:18 > 0:09:22Have you come up with an answer? Yes, you've both got an answer.
0:09:22 > 0:09:24Turn those answers round so we can all look.
0:09:24 > 0:09:26For the Reds, we've got a million.
0:09:26 > 0:09:30We've got up quite a lot in the numbers. Yellows, we've got 250.
0:09:30 > 0:09:31The actual answer
0:09:31 > 0:09:35is ten million atoms on a full stop.
0:09:35 > 0:09:38Ten million, which means the Red Team takes the point. Well done.
0:09:40 > 0:09:43People used to think atoms were the smallest thing on Earth
0:09:43 > 0:09:46until they split one. Not by accident,
0:09:46 > 0:09:49they didn't drop it, they split it deliberately
0:09:49 > 0:09:51and found protons, neutrons and electrons inside.
0:09:51 > 0:09:54OK, the score now is 2 - 1 to the Reds.
0:09:54 > 0:09:57CHEERING
0:10:10 > 0:10:13That's all to come, but now it's time for Mini Science.
0:10:13 > 0:10:16This is a round where our teams will conduct
0:10:16 > 0:10:18their own scientific experiments
0:10:18 > 0:10:21and to help us do that we need my old science teacher, Mini Miss.
0:10:25 > 0:10:28Richard, will your mum and day be coming to parents' evening tonight?
0:10:28 > 0:10:32No, miss, I forgot to take the letter home, sorry.
0:10:32 > 0:10:34- You forgot.- Yes, miss.
0:10:34 > 0:10:39Tell me, Richard, did you also "forget" how to transport
0:10:39 > 0:10:41a 65-year-old science teacher through time
0:10:41 > 0:10:44without her ending up like a 10-year-old girl.
0:10:44 > 0:10:46Yes, miss, I forgot that as well. I'm sorry.
0:10:46 > 0:10:50It won't happen again. What experiment are we doing today?
0:10:50 > 0:10:52Today we are looking at water.
0:10:52 > 0:10:56Although you can swim easily through it, it is actually quite heavy.
0:10:56 > 0:11:01In this game the teams have to guess the weight of a lab rat and Ninja Nan
0:11:01 > 0:11:03in relation to water-filled bottles.
0:11:03 > 0:11:05How will they do that and does it have anything to do
0:11:05 > 0:11:08with the enormous set of weighing scales just behind you?
0:11:08 > 0:11:13Well, Nan and the lab rat must get on the scales separately,
0:11:13 > 0:11:17and the teams have to guess how many bottles of water they weigh.
0:11:17 > 0:11:19One team will guess the lab rat's weight,
0:11:19 > 0:11:22and the other will guess Ninja Nan's.
0:11:22 > 0:11:23After the teams have guessed
0:11:23 > 0:11:26the lab rats will put the water on the scales.
0:11:26 > 0:11:29The team with the closest guess wins the games.
0:11:29 > 0:11:32So this is all about how heavy water is and trying to use it
0:11:32 > 0:11:36to guess the weight of lab rat or Ninja Nan and balance them out.
0:11:36 > 0:11:39There's a few important points here. Red Team, you're ahead.
0:11:39 > 0:11:40So, you get two choices.
0:11:40 > 0:11:42Firstly, you get to decide
0:11:42 > 0:11:45who you want to try and balance out using water
0:11:45 > 0:11:47on the scales, lab rat or Ninja Nan.
0:11:47 > 0:11:49- Ninja Nan.- Ninja Nan.
0:11:49 > 0:11:53- The second choice is whether you want to go first or second.- Second.
0:11:53 > 0:11:56You want to go second. Red Team, you can clear off to security, please.
0:11:56 > 0:11:58A lab rat there will look after you
0:11:58 > 0:12:01and make sure you can't hear or see what's going on.
0:12:01 > 0:12:04We have a lab rat on the scales ready, Yellow team, for you to do
0:12:04 > 0:12:07the balancing. I am going to give you some time
0:12:07 > 0:12:09to have a little talk amongst yourselves
0:12:09 > 0:12:12and choose which size of bottles and how many you want to use, OK.
0:12:13 > 0:12:17Water is the only substance on Earth that occurs naturally
0:12:17 > 0:12:21in all three states. It can solid as ice, it can be a liquid as water,
0:12:21 > 0:12:26or it can be gas as steam, and it's also surprisingly heavy.
0:12:26 > 0:12:29Every litre of it weighs a kilogram.
0:12:29 > 0:12:31Of course, I forgot to tell our teams that,
0:12:31 > 0:12:34but then they'll work it out, I don't doubt.
0:12:34 > 0:12:38And when it comes to weight, mass and weight are not the same thing,
0:12:38 > 0:12:42because your mass is always the same but you weigh differently
0:12:42 > 0:12:44depending on gravitational pull.
0:12:44 > 0:12:46So, if you stood at the top of Mount Everest
0:12:46 > 0:12:49where the Earth's gravitational pull isn't as strong as at sea level,
0:12:49 > 0:12:53you would weigh less than if you weighed yourself at the seaside.
0:12:53 > 0:12:58Hopefully our Red Team will be being kept entertained in security.
0:12:58 > 0:13:01I have a nasty suspicion that the lab rat looking after them in there,
0:13:01 > 0:13:03is going to keep them entertained
0:13:03 > 0:13:06with their favourite pastime of watching the security cameras.
0:13:06 > 0:13:10Their particular favourite is the one that looks at the waterwheel.
0:13:10 > 0:13:12Yellows, how are we doing?
0:13:12 > 0:13:17- We want four 90-litre bottles.- 19. - 19!
0:13:17 > 0:13:18Four 19-litre bottles, OK.
0:13:18 > 0:13:21- Four of the big ones. - Two medium bottles, two litres.
0:13:21 > 0:13:25- Two medium ones, OK. - And two one-litre bottles.
0:13:25 > 0:13:27Lab rats, can we load those in, please?
0:13:27 > 0:13:32That's four of the really big ones. Two medium sized, two-litre ones.
0:13:32 > 0:13:34And two of the small.
0:13:34 > 0:13:38Lab rats, if you can load them up. Let's see, he hasn't moved yet.
0:13:51 > 0:13:53Right, is that everything?
0:13:53 > 0:13:57Take your feet right off the ground please, lab rat.
0:13:57 > 0:13:59We're not... I don't think...
0:14:00 > 0:14:04We're not quite there, but that looks to me to be pretty close.
0:14:04 > 0:14:08Now, I can tell you that you put 82 litres of water on.
0:14:08 > 0:14:13Now, that equates to 82 kilograms
0:14:13 > 0:14:16and our lab rat weighs 87 kilograms
0:14:16 > 0:14:18so you're only five kilograms off.
0:14:18 > 0:14:21That was pretty close, if you ask me.
0:14:21 > 0:14:24So, that's how the Yellow Team has done. Now we have to find out
0:14:24 > 0:14:26whether the Red Team can beat that.
0:14:26 > 0:14:29If they get closer to the weight of Ninja Nan, they get the point.
0:14:29 > 0:14:32If they are further away, you get the point, Yellows.
0:14:32 > 0:14:35Let's get rid of lab rat and all of these bottles.
0:14:35 > 0:14:38Let's have the Red Team back in the Blast Lab.
0:14:44 > 0:14:48Welcome back, Reds. OK, now you are going to be balancing Ninja Nan.
0:14:48 > 0:14:50So, lab rat, if you'd like to get off,
0:14:50 > 0:14:53Ninja Nan, if you wouldn't mind please taking his place.
0:14:53 > 0:14:56Reds, you've got some time to think
0:14:56 > 0:15:00how many bottles and which size you want to use to balance Ninja Nan.
0:15:00 > 0:15:03All right, get on, have a chat. Have a chat, work it out.
0:15:07 > 0:15:10OK, Reds, you look to have come to a decision pretty quickly.
0:15:10 > 0:15:13- Yeah?- Yeah. - What are you going to go for then?
0:15:13 > 0:15:18- Two 19 litres and ten two litres. - Two 19s and ten two litres.
0:15:18 > 0:15:21Lab rats, did you hear that? let's load it up, please.
0:15:21 > 0:15:24Two 19s. Ten two litres.
0:15:38 > 0:15:40Oh, lift off is happening. And I think...
0:15:40 > 0:15:42Oh! Look, she was balancing.
0:15:43 > 0:15:47Oh, I can tell you that's because you put on
0:15:47 > 0:15:5058 litres of water which equates to 58 kilos.
0:15:50 > 0:15:53Ninja Nan weighs 54.
0:15:53 > 0:15:57So, you were just four over which was very, very close.
0:15:57 > 0:16:01If we take those two off, we will see Ninja Nan balanced perfectly.
0:16:01 > 0:16:03Obviously, she's used to that.
0:16:03 > 0:16:06As a ninja, her balance is naturally perfect.
0:16:06 > 0:16:09There we go, look at that. And that means, Reds, you were closest.
0:16:09 > 0:16:12You take the point. Round of applause for Red Team.
0:16:14 > 0:16:17Both teams getting really a lot closer than I expected there.
0:16:17 > 0:16:21That was impressive stuff. Water is surprisingly heavy,
0:16:21 > 0:16:24So, I wonder what would happen if instead of piling it carefully
0:16:24 > 0:16:27like we did there, you dropped it
0:16:27 > 0:16:31from very, very, very high up on to something.
0:16:34 > 0:16:38So, it would appear that water is pretty powerful stuff.
0:16:38 > 0:16:41And, it would follow then that the more water you've got,
0:16:41 > 0:16:43the more powerful it is.
0:16:43 > 0:16:47But how can it hurt anything? It goes against your instincts.
0:16:47 > 0:16:50I mean, it's just water. That doesn't hurt.
0:16:50 > 0:16:52It's just floppy.
0:16:58 > 0:17:03Well, it may feel floppy but science says it can be dangerous.
0:17:03 > 0:17:06If water is dropped from a height it will keep on accelerating
0:17:06 > 0:17:09until its going, well, really, really quickly.
0:17:09 > 0:17:12The greater the speed and the larger the water
0:17:12 > 0:17:15then the bigger the force when it finally hits something.
0:17:16 > 0:17:19Right, you...out, please.
0:17:19 > 0:17:21Go on. Out. I need your car. Go.
0:17:21 > 0:17:24Thank you very much. This will do perfectly well.
0:17:24 > 0:17:28We're going to need more water, a bigger bag. That will be perfect.
0:17:28 > 0:17:29Don't worry, it will be fine.
0:17:29 > 0:17:32This is a perfect car for this experiment, Granada.
0:17:32 > 0:17:35This is the GL model, a lot of safety features on here,
0:17:35 > 0:17:39not sure if this is what they had in mind when they designed it.
0:17:39 > 0:17:41Let's see. Right, get that in position over this.
0:17:41 > 0:17:44This should be good.
0:17:52 > 0:17:54OK, take it up. Excellent.
0:17:55 > 0:18:00I am looking forward to seeing this. I'm keen to know what it does.
0:18:00 > 0:18:02Stop looking so miserable.
0:18:02 > 0:18:06It will be fine. Don't worry.
0:18:07 > 0:18:09That's a ton of water.
0:18:10 > 0:18:13And instinct tells you it's just going to be a splash,
0:18:13 > 0:18:16and not do any damage, but it should be quite an impact probably.
0:18:16 > 0:18:18I mean, your car will be fine.
0:18:18 > 0:18:21Don't worry about that. It'll be fine.
0:18:21 > 0:18:25OK, that's as high as it will go.
0:18:25 > 0:18:27Look at that, a ton of water.
0:18:29 > 0:18:32What? Don't look miserable.
0:18:32 > 0:18:34This is science going on, good use of your car.
0:18:34 > 0:18:37It'll be fine, it'll be fine.
0:18:37 > 0:18:40Right, three, two, one. Drop.
0:18:42 > 0:18:44Hold the experiment right there, because...
0:18:44 > 0:18:48because, teams, there's another point in this.
0:18:48 > 0:18:52The score now is 3-1 to the Reds. Yellows, you need this point.
0:18:52 > 0:18:54I'll give the point to the team
0:18:54 > 0:18:56that can describe most accurately what will happen.
0:18:56 > 0:18:59Reds, what's your theory, what do you think will happen?
0:18:59 > 0:19:02We think the water will just come on and damage the top of the car.
0:19:02 > 0:19:05- And get wet.- A bit of damage and the car will get wet,
0:19:05 > 0:19:07I think that will happen. Yellows?
0:19:07 > 0:19:12Because it's so high up, it will fall down at maybe 60mph,
0:19:12 > 0:19:14so it can, like, reach its full velocity
0:19:14 > 0:19:18and then turn into a solid and smash the roof of the car.
0:19:18 > 0:19:20So, you think it will smash the roof of the car,
0:19:20 > 0:19:22but you think...
0:19:22 > 0:19:24Just damage the top of the car.
0:19:24 > 0:19:26OK, so damage the top of the car,
0:19:26 > 0:19:28more damage over here from the Yellows.
0:19:28 > 0:19:31OK, well, I think that's fairly clear.
0:19:31 > 0:19:34We'll be able to judge for ourselves who's the closest
0:19:34 > 0:19:37because we are going to see exactly what does happen.
0:19:39 > 0:19:42Three, two, one, drop!
0:19:44 > 0:19:45It'll be fine, don't worry.
0:19:47 > 0:19:52It's not... Yeah. Wow!
0:20:15 > 0:20:18Wow, you see the power of water in action, look at that!
0:20:18 > 0:20:21The doors are bent, the chassis's bent,
0:20:21 > 0:20:23windscreen's gone, the roof's gone.
0:20:23 > 0:20:25That's... It didn't even splash.
0:20:25 > 0:20:28It just smashed it. What?
0:20:29 > 0:20:32Most of that we'll polish out. That's science, that is.
0:20:32 > 0:20:35We learnt, we felt the benefit.
0:20:35 > 0:20:38You've got some rust there you want to work on.
0:20:38 > 0:20:41CHEERING
0:20:41 > 0:20:44I think the expressions in here told us the whole story.
0:20:44 > 0:20:47Reds, you're not even going to claim that point, are you?
0:20:47 > 0:20:49It can only go to the Yellows. Well done.
0:20:49 > 0:20:51That means the scores are 3 - 2.
0:20:51 > 0:20:54CHEERING
0:20:54 > 0:20:56Who'd have thought, eh?
0:20:56 > 0:21:00Just a bag of water, really spoiled that lab rat's car. Whoops.
0:21:00 > 0:21:03Time now for both our teams to go off and get ready
0:21:03 > 0:21:05for The Messy Messy Mess Test. Away you go
0:21:05 > 0:21:08because you'll need protective suits. Off you go and get changed.
0:21:08 > 0:21:10And while they're doing that,
0:21:10 > 0:21:12audience, I thought that was quite impressive.
0:21:12 > 0:21:15Anybody want to see it again? Who'd like to see that again?
0:21:15 > 0:21:18So would I, let's have a look at that again.
0:21:40 > 0:21:43- APPLAUSE AND CHEERING - Just a bag of water, that's all.
0:21:43 > 0:21:48Who'd have thought? He was quite cross, if you were wondering.
0:21:48 > 0:21:50Well done to everyone in the audience
0:21:50 > 0:21:52who said the damage would be substantial
0:21:52 > 0:21:54because it was as it turned out.
0:21:54 > 0:21:58OK, it's time for us all to move on because now it's time for The Messy Messy Mess Test,
0:22:02 > 0:22:04Which today is the Bridge Of Destiny.
0:22:04 > 0:22:07GROWLING DEEP VOICE: The Bridge Of Destiny.
0:22:07 > 0:22:10Your prizes, like an MP3 player, a planetarium,
0:22:10 > 0:22:12a kitchen chemistry set,
0:22:12 > 0:22:15all need teams to be transported across this tank
0:22:15 > 0:22:18full of lethal toxic gunge.
0:22:18 > 0:22:21If they fall in, they're useless, obviously, because they'll melt.
0:22:21 > 0:22:25To do this, you'll need to construct your very own Bridge Of Destiny.
0:22:25 > 0:22:28GROWLING DEEP VOICE: The Bridge Of Destiny.
0:22:28 > 0:22:31To move them from one side to the other.
0:22:31 > 0:22:34Now, all the bits you need are all in the tank with you
0:22:34 > 0:22:37and hopefully that is all that's in the tank with you.
0:22:37 > 0:22:40I think I got all the vicious eels out last night,
0:22:40 > 0:22:42but they do breed quite quickly,
0:22:42 > 0:22:45so just watch your fingers in there.
0:22:45 > 0:22:47You need to burrow about in this lethal toxic gunge
0:22:47 > 0:22:50and find the pieces you need to assemble your bridge
0:22:50 > 0:22:54before your precious prizes end up forever in the yawning chasm
0:22:54 > 0:22:56below your Bridge Of Destiny.
0:22:56 > 0:22:59GROWLING DEEP VOICE: The Bridge Of Destiny.
0:22:59 > 0:23:02CRASHING
0:23:02 > 0:23:06Crikey. As soon as you've finished your bridge, pull the lever.
0:23:06 > 0:23:10Reds, you pull that one, Yellows, that one, to release your car
0:23:10 > 0:23:12towing your truck full of prize pods.
0:23:12 > 0:23:16Red Team, you will start first because you have the most points
0:23:16 > 0:23:18so they've bought you a five-second advantage.
0:23:18 > 0:23:22When you hear the first siren, you start. Yellows, you wait.
0:23:22 > 0:23:25The second you hear the second siren, get on with it.
0:23:25 > 0:23:27OK. Everybody knows what they've got to do.
0:23:27 > 0:23:31This is a straight race across the tanks. That race starts...
0:23:32 > 0:23:34..now.
0:23:34 > 0:23:38And the Reds are off and making good use of their head start.
0:23:38 > 0:23:41Now, there's the second siren and the Yellows will have to hurry
0:23:41 > 0:23:43to catch the Reds.
0:23:46 > 0:23:50It does look like hard work wading through all that gunge.
0:23:53 > 0:23:54The Reds are flying ahead now.
0:23:54 > 0:23:57The Yellows looking more than a little confused.
0:23:57 > 0:23:59Come on, Yellows.
0:24:06 > 0:24:11Oh, and the Yellows dropping pieces of their bridge in the gunge, now.
0:24:14 > 0:24:17The Reds look to have some sort of system in place.
0:24:17 > 0:24:20Whilst the Yellows...well, your guess is as good as mine.
0:24:20 > 0:24:24They just can't seem to find the pieces they are after.
0:24:34 > 0:24:37Frantic construction on both sides of the tank.
0:24:40 > 0:24:43With the Yellows finally making some headway
0:24:43 > 0:24:45but is it going to be too little too late for the Yellows?
0:24:50 > 0:24:54As the Reds force the last piece of their bridge into place,
0:24:54 > 0:24:57they are reaching for the lever. And there goes the Red wagon.
0:24:57 > 0:25:01It's going to be the Reds by a mile or at least by five metres.
0:25:01 > 0:25:03A convincing win by the Reds, there.
0:25:03 > 0:25:09Well, quite clearly that was a win for the Red team.
0:25:09 > 0:25:12CHEERING
0:25:12 > 0:25:13Let's look what they've won.
0:25:13 > 0:25:17Ready, Nan? Each of you will be taking home an MP3 player...
0:25:17 > 0:25:19..a planetarium...
0:25:20 > 0:25:21..a marine copter...
0:25:22 > 0:25:24..an electromagnetic kit...
0:25:25 > 0:25:26..a kitchen chemistry set...
0:25:28 > 0:25:30..and a 20 Questions game.
0:25:30 > 0:25:32For each of the Red Team.
0:25:34 > 0:25:37Yellows, here's the amazing thing, the big coincidence,
0:25:37 > 0:25:40because you would have won exactly the same.
0:25:40 > 0:25:42Instead of taking them home,
0:25:42 > 0:25:44unfortunately you've got to blow them up,
0:25:44 > 0:25:47because it's time for Bidet Goes Bang.
0:25:55 > 0:25:59So, here we all are once again. Red Team, how are we all feeling?
0:25:59 > 0:26:01- Brilliant.- Pretty good? Yeah.
0:26:01 > 0:26:04- Satisfied.- Behind you a huge wheelbarrow full of prizes
0:26:04 > 0:26:07you will be taking home. That's a nice feeling.
0:26:07 > 0:26:10Here's an example of perhaps a less nice feeling.
0:26:10 > 0:26:12Yellow team how are you feeling?
0:26:12 > 0:26:15Kind of bad but good because we get to blow things up.
0:26:15 > 0:26:18You're looking forward to this. Good for you.
0:26:18 > 0:26:21What went wrong in that last game? Why didn't you win?
0:26:21 > 0:26:24We didn't think that five seconds was that long but obviously it was.
0:26:24 > 0:26:28Getting those points early on makes a difference and they were quick.
0:26:28 > 0:26:29Well, there we go.
0:26:29 > 0:26:32You've heard of the big bang theory well, this is my big bang bidet.
0:26:32 > 0:26:36They both work in the same way, well, they both go bang.
0:26:36 > 0:26:38So, there's no putting it off.
0:26:38 > 0:26:41- Who's doing the plunger? - We all are.- Share the blame.
0:26:41 > 0:26:44I think that's best. Lift the plunger up into the firing position.
0:26:44 > 0:26:46Thank you. Don't plunge it yet.
0:26:46 > 0:26:48Right, I'm going to give you a countdown.
0:26:48 > 0:26:53DEEP VOICE AND AUDIENCE TOGETHER: Five, four, three, two, one.
0:26:58 > 0:27:02That did it. Unfortunately, it's now time to say goodbye.
0:27:02 > 0:27:05We've been learning all about the weight of liquids today.
0:27:05 > 0:27:08And it's the closest my lab rats have got to water in a long time.
0:27:08 > 0:27:10Bath night tonight, I reckon.
0:27:10 > 0:27:12- See you very soon. - CHEERING
0:27:22 > 0:27:26Blast Lab was recorded in front of a live studio audience.
0:27:26 > 0:27:29Probably no lab rats were hurt... too badly during filming.
0:27:29 > 0:27:32Subtitles by Red Bee Media Ltd
0:27:32 > 0:27:35E-mail subtitling@bbc.co.uk