0:00:33 > 0:00:36- CHEERING - Excellent, I've finally done it,
0:00:36 > 0:00:38developed the perfect super-strength glue.
0:00:38 > 0:00:42That stuff will last a lifetime. Well done, team, good work.
0:00:42 > 0:00:45Oh, yeah, I hope you two are friends. Good luck.
0:00:45 > 0:00:47Welcome to my top-secret Blast Lab.
0:00:47 > 0:00:49CHEERING AND APPLAUSE
0:00:51 > 0:00:54Joining me today will be two teams of scientists.
0:00:54 > 0:00:58They're going to take part in scientific challenges and experiments.
0:00:58 > 0:01:00The best team will win excellent prizes.
0:01:00 > 0:01:02Remember, there are no losers here,
0:01:02 > 0:01:04apart from the team that doesn't win any prizes.
0:01:04 > 0:01:07Come to think of it, yes, there are losers.
0:01:07 > 0:01:10Coming up today, we have Fact Nav 2.0 with my good friend, Oliver.
0:01:10 > 0:01:13CHEERING AND APPLAUSE
0:01:15 > 0:01:18In Mini Science, we're going to be using big forces
0:01:18 > 0:01:20to hold plungers together.
0:01:22 > 0:01:25They'll resolve that by the end of the show, don't worry.
0:01:25 > 0:01:29And we'll be making a big noise, but will it get big results?
0:01:30 > 0:01:32HIGH-PITCHED RINGING
0:01:33 > 0:01:36To top it off, there will be a big mess as we return
0:01:36 > 0:01:39to the stinking cess pit of slime, the septic tank.
0:01:43 > 0:01:48Now, my security lab is guarded by a lady who treats intruders
0:01:48 > 0:01:49like she treats her teeth.
0:01:49 > 0:01:52She waits till dark then takes them out quickly and silently.
0:01:52 > 0:01:53It is Ninja Nan.
0:02:01 > 0:02:04Let's look who's trying to get into my lab today.
0:02:04 > 0:02:05CHEERING AND APPLAUSE
0:02:09 > 0:02:12That's one way to get carried away with the applause,
0:02:12 > 0:02:15because we can't be sure these are the real red team,
0:02:15 > 0:02:17identify yourselves by names for security.
0:02:17 > 0:02:20- Zoe.- Bethany.- Samantha.
0:02:20 > 0:02:22Zoe, Bethany, Samantha, yep that checks out.
0:02:22 > 0:02:24Under hidden talent,
0:02:24 > 0:02:27Bethany, it's your name, what will you do to prove you're you?
0:02:27 > 0:02:28I can skip with my arms.
0:02:28 > 0:02:32If you can, you are the red team, you can come into the lab.
0:02:33 > 0:02:36Oh, that's... Well, that's amazing, that confirms it
0:02:36 > 0:02:38you are the red team, come into the lab.
0:02:41 > 0:02:43What an astonishing skill.
0:02:43 > 0:02:46Is that of any use, Bethany, apart from getting into secret labs?
0:02:46 > 0:02:48No?
0:02:48 > 0:02:51Now, before I can be absolutely sure you are the real red team,
0:02:51 > 0:02:52we agreed a password.
0:02:52 > 0:02:55- What is that word?- Glamour! - That's what it says. Why?
0:02:55 > 0:02:58Because we like make-up, clothes and shopping.
0:02:58 > 0:03:00That confirms it, you are the red team.
0:03:00 > 0:03:03Get settled in. A round of applause, they are the reds.
0:03:05 > 0:03:08Let's have a bunch of people who think they're the yellow team.
0:03:08 > 0:03:10CHEERING AND APPLAUSE
0:03:14 > 0:03:17Hello, you play for the yellow team,
0:03:17 > 0:03:19identify yourselves by name, please.
0:03:19 > 0:03:21- Connor.- Henry.- Scott.
0:03:21 > 0:03:23Connor, Henry, Scott, yeah, fair enough.
0:03:23 > 0:03:25Henry, I've got your name under talent.
0:03:25 > 0:03:29- Prove you're who you say you are, what are you going to do? - I play tenor horn.
0:03:29 > 0:03:32You're going to need a tenor horn to do that, right?
0:03:32 > 0:03:34Oh, I'm assuming that is one, Henry, OK?
0:03:34 > 0:03:36HE PLAYS THE HORN
0:03:37 > 0:03:41Yeah, that was a noise, fair enough, come in.
0:03:42 > 0:03:45You've done well to get this far into the lab.
0:03:45 > 0:03:48I need to be certain, chaps, that you really are the yellow team.
0:03:48 > 0:03:51A lot of the wrong types try and get in here.
0:03:51 > 0:03:54We agreed a password with the actual yellow team, what is that word?
0:03:54 > 0:03:55Music.
0:03:55 > 0:03:56Music, why?
0:03:56 > 0:03:59Cos we all play musical instruments.
0:03:59 > 0:04:03These guys are the yellows, get settled in for the first game, away you go.
0:04:04 > 0:04:07It's time to bring on the cleverest automobile ever invented.
0:04:07 > 0:04:10He's got artificial intelligence and fake leather seats,
0:04:10 > 0:04:12please welcome Oliver.
0:04:32 > 0:04:37Come on, Oliver. He's not fast, but he's determined.
0:04:37 > 0:04:41That's connected up. I reckon that's him hooked up to the machine.
0:04:41 > 0:04:44I could've updated and upgraded Oliver's wheels
0:04:44 > 0:04:48or engine, but instead, I installed the latest version of Fact Nav -
0:04:48 > 0:04:49Fact Nav 2.0.
0:04:49 > 0:04:53Who needs to go faster when you've got a billion and one amazing facts
0:04:53 > 0:04:55to keep you entertained on a long journey?
0:04:55 > 0:04:57Of course, the thing is, I fitted it.
0:04:57 > 0:04:59So, let's just say it's temperamental.
0:04:59 > 0:05:02It's your job, teams, to work out which facts are true
0:05:02 > 0:05:05and which are false.
0:05:05 > 0:05:07If a fact is a true, Oliver will make this noise.
0:05:07 > 0:05:09SIREN SOUNDS
0:05:09 > 0:05:12If a fact turns out to be false, Oliver will make this noise.
0:05:12 > 0:05:14SHIP HORN
0:05:14 > 0:05:17OK, this is how this game's going to work.
0:05:17 > 0:05:19Each team has three lights on their side.
0:05:19 > 0:05:22At the moment, they're red, but when you answer a question correctly,
0:05:22 > 0:05:23they get turned green.
0:05:23 > 0:05:27If you answer a question wrong, if you get it wrong,
0:05:27 > 0:05:31that will turn one of the opposing team's lights green.
0:05:31 > 0:05:34To find out who's going to go first and to light the first light,
0:05:34 > 0:05:37we're going to have a nearest-to question to start off.
0:05:37 > 0:05:40I'll give the point and I'll light a light green
0:05:40 > 0:05:43for the team that gets closest to the real answer for this question.
0:05:43 > 0:05:51In days, what's the longest time a person has spent in space in one go?
0:05:51 > 0:05:54The number of days, have a think, have a little chat.
0:05:54 > 0:05:59In days, the longest time a person has spent in space in one go.
0:05:59 > 0:06:03Five, four, three, two, one.
0:06:03 > 0:06:07Time's up. I'm going to take whatever answer you've got down now.
0:06:07 > 0:06:10Yellows, in days, what's the longest time a person has spent in space?
0:06:10 > 0:06:12200 days.
0:06:12 > 0:06:13200 days. OK, Scott, reds?
0:06:13 > 0:06:15- Five.- Five days?
0:06:15 > 0:06:18There's some difference between your answers,
0:06:18 > 0:06:22but all right, I'm sure even half a day would be a long time in space.
0:06:22 > 0:06:25The real answer is four...
0:06:25 > 0:06:30hundred and 37 days, 17 hours and 8 minutes.
0:06:30 > 0:06:33I'm sorry, reds, the points are going away to the yellows.
0:06:33 > 0:06:35Green light lit.
0:06:36 > 0:06:40You're on your way to winning this first round and taking the point.
0:06:40 > 0:06:43The first team to face a true or false question is the yellows.
0:06:43 > 0:06:46You've got your chance to light another green light.
0:06:46 > 0:06:51Humans do enough wee in their lifetime to fill 400 baths.
0:06:51 > 0:06:53Is that true or false?
0:06:53 > 0:06:57Human beings produce enough wee in their lifetime to fill 400 baths.
0:06:57 > 0:06:59Is that true or false, what do you think?
0:06:59 > 0:07:01I think it's true.
0:07:01 > 0:07:02Oliver, is it true or false?
0:07:02 > 0:07:07- SIREN SOUNDS - It's true, well done. That's another green light for you.
0:07:09 > 0:07:12All right, reds, that's 2-nil so far in the first game.
0:07:12 > 0:07:14Reds, here's your fact,
0:07:14 > 0:07:16tell me if this is true or false.
0:07:16 > 0:07:21Crocodiles need to chew meat at least eight times
0:07:21 > 0:07:22before they can swallow it?
0:07:22 > 0:07:25I'm going to remind you how critical this is.
0:07:25 > 0:07:29Get it right, you're in the game, get it wrong, you lose the game, simple as that.
0:07:29 > 0:07:31Crocodiles need to chew meat at least eight times
0:07:31 > 0:07:33before they can swallow it.
0:07:33 > 0:07:35True or false? What do you think?
0:07:35 > 0:07:36- False.- You think false.
0:07:36 > 0:07:38OK, Oliver, is it true or false?
0:07:38 > 0:07:41- SHIP HORN - It's false, well done!
0:07:41 > 0:07:43That's a green light for you guys.
0:07:45 > 0:07:48You know I was nervous... No, I wasn't really nervous
0:07:48 > 0:07:50cos I'm not going to win or lose, but it was tense.
0:07:50 > 0:07:52Right, yellows...
0:07:52 > 0:07:56you could now take this game with this next question,
0:07:56 > 0:07:59or you could give the reds another green light and put them
0:07:59 > 0:08:00in the same position as you, OK?
0:08:00 > 0:08:03Here is your science fact.
0:08:03 > 0:08:05Is it true or false?
0:08:05 > 0:08:09Water is 10% smaller when frozen?
0:08:09 > 0:08:11What do you reckon, then?
0:08:11 > 0:08:13Water's 10% smaller when frozen. Is that true or false?
0:08:13 > 0:08:15- We think false. - You think false.
0:08:15 > 0:08:18Oliver, is it true or false? They think it's false.
0:08:18 > 0:08:22- SHIP HORN - It's false, well done, that's three for you.
0:08:26 > 0:08:29That makes the score at the end of the first round,
0:08:29 > 0:08:30it's 1-nil to the yellows.
0:08:30 > 0:08:33CHEERING AND APPLAUSE
0:08:34 > 0:08:35Sorry.
0:08:49 > 0:08:52Now, for this next round, I really wanted my old science teacher
0:08:52 > 0:08:54from school back here to help me with it.
0:08:54 > 0:08:56So, I've built a time machine,
0:08:56 > 0:08:58brought her through time to be here today
0:08:58 > 0:08:59and that's it.
0:08:59 > 0:09:03It was a complete success, nothing more to say on the subject.
0:09:03 > 0:09:06Except she came back as a ten-year-old and not a 65-year-old.
0:09:06 > 0:09:08Please welcome, Mini Miss.
0:09:15 > 0:09:18Hello, Mini Miss, really sorry about the whole...
0:09:18 > 0:09:20I don't know what went wrong.
0:09:20 > 0:09:22You came back as a child for some reason.
0:09:22 > 0:09:25- It was buttons or... - I think I know the reason, Richard...
0:09:25 > 0:09:26- you.- Yeah.
0:09:26 > 0:09:30Now, pay attention, today's game is all about vacuums.
0:09:30 > 0:09:32You're not going to make me clean the lab up,
0:09:32 > 0:09:36that's the lab rats job, that's what they do.
0:09:36 > 0:09:39Well, it doesn't look like it's been done for quite a while.
0:09:39 > 0:09:41- Sorry, Miss, that's character. - No, Richard.
0:09:41 > 0:09:44The game involves toilet plungers and is called...
0:09:44 > 0:09:46DEEP VOICE: Suck A Roo!
0:09:46 > 0:09:47How do you do that?
0:09:47 > 0:09:51Sorry, Miss, you should see a doctor and get it fixed. Just happens occasionally.
0:09:51 > 0:09:55In front of the teams are two plungers that have been pressed together.
0:09:55 > 0:09:59Teams must then take it in turns to hang these household items
0:09:59 > 0:10:01on the plunger.
0:10:01 > 0:10:06- That sounds easy. - Ah, but eventually, the weight will become too much for the plungers
0:10:06 > 0:10:07and they'll break apart.
0:10:07 > 0:10:10The team that causes the plunger to fall will lose
0:10:10 > 0:10:12and the other team will get the point.
0:10:12 > 0:10:13OK, I understand that.
0:10:13 > 0:10:18Before you start, Mini Miss will talk you through the objects and how it is going to work.
0:10:18 > 0:10:20OK? And take advantage of using her clever brain.
0:10:20 > 0:10:23Doesn't look it, 65, it's a lot of experience in there.
0:10:28 > 0:10:32So, here are our two plungers. Thank you. They will come unstuck after a couple of years.
0:10:32 > 0:10:37The two plungers are held together with the air around them, there's no glue in here.
0:10:37 > 0:10:40This is because when we push them together, we squash them a bit.
0:10:40 > 0:10:43That squeezes the air out that's between them.
0:10:43 > 0:10:46When we let go, they try and return to the size they started at
0:10:46 > 0:10:51and as they stretch back out it means a small amount of air inside is spread out,
0:10:51 > 0:10:54which means it's at a lower pressure than the air outside here.
0:10:54 > 0:10:58That means the air on the outside can push against the plungers
0:10:58 > 0:10:59and keep them together.
0:10:59 > 0:11:01Air pressure is strong.
0:11:01 > 0:11:05We have about a tonne of air pushing down on our bodies all the time,
0:11:05 > 0:11:07which is about the weight of a small car,
0:11:07 > 0:11:09but we're used to it, so we don't notice it.
0:11:09 > 0:11:14Right, teams, I think that's enough thinking for you, let's actually get suck-a-rooing. OK?
0:11:14 > 0:11:18So, the yellow team's in the lead, 1-nil,
0:11:18 > 0:11:21which means you decide - do you want to go first or second?
0:11:21 > 0:11:23- We'll go first. - You'll go first.
0:11:23 > 0:11:26OK, if you would like to go behind the counter.
0:11:26 > 0:11:28CHEERING
0:11:29 > 0:11:32Earnest discussion now about your first object.
0:11:32 > 0:11:33What are you going for?
0:11:33 > 0:11:36- We're going for the beach ball. - The beach ball.
0:11:36 > 0:11:39'A magnificent first pick by the yellows, because the beach ball
0:11:39 > 0:11:41'only weighs 200 grams.'
0:11:41 > 0:11:44Oh, yeah, well done!
0:11:46 > 0:11:49Reds. OK, reds, that's what you want to go with. Who will hang that up?
0:11:49 > 0:11:51- Me.- You will? OK, away you go.
0:11:52 > 0:11:56'Another great pick. The shower curtain only weighs 250 grams.'
0:11:57 > 0:12:00Oh, yeah! We're on, we're on. Would you like to come round?
0:12:00 > 0:12:02The yellow team go for the mop.
0:12:02 > 0:12:05'Which weighs 750 grams.'
0:12:05 > 0:12:07ALL: Ooh!
0:12:07 > 0:12:10Can't get... Oh, it's tricky. It's not an easy fix, this.
0:12:12 > 0:12:14Oh! Ooh! Step back! Well done, well done!
0:12:14 > 0:12:18'1.2 kilograms up there. What will the reds pick?'
0:12:18 > 0:12:21- The lavatory roll? - Yeah.- Who's doing the hanging?
0:12:21 > 0:12:23- I will.- All right, good luck, Bethany, good luck.
0:12:23 > 0:12:26'The loo roll only weighs 400 grams.'
0:12:26 > 0:12:29Ooh! Oh, masterfully done. That was magnificent.
0:12:31 > 0:12:34Well done. Nice play from the reds.
0:12:36 > 0:12:39- Have you made your decision, Scott? - I'm going for the scales.
0:12:39 > 0:12:42'At 2.5 kilograms, will the scales weigh too much?'
0:12:42 > 0:12:44OK. Is he going to let it...
0:12:44 > 0:12:47He's going to let it go. Is it going to work?
0:12:47 > 0:12:49This is terrifying. Oh!
0:12:49 > 0:12:51CHEERING
0:12:51 > 0:12:53'There's 4.1 kilograms up there now.'
0:12:53 > 0:12:56That's some good play, the pressure is really on.
0:12:56 > 0:12:59'And the girls have picked the copper pipes.
0:12:59 > 0:13:02'It may just be a couple of pipes, but at 1.3 kilograms,
0:13:02 > 0:13:06'it could be the difference between success and failure.'
0:13:07 > 0:13:11O-oh! Oh! Run!
0:13:11 > 0:13:12Oh, that's just...
0:13:15 > 0:13:17Reds, that's brilliant.
0:13:17 > 0:13:20'Now the pressure's really starting to mount,
0:13:20 > 0:13:24'there's 5.4 kilograms up there and only one item that weighs less
0:13:24 > 0:13:28'than three kilos left, and the yellows have picked it.'
0:13:29 > 0:13:33Oh, this is terrifying. This is a critical piece of play.
0:13:35 > 0:13:37Oh, clever! Nothing in the rules says he can't
0:13:37 > 0:13:41as long as it's being suspended and isn't touching the ground.
0:13:41 > 0:13:43Oh, well!
0:13:47 > 0:13:49'How can the reds come back from this?'
0:13:49 > 0:13:51Unimaginable pressure on the red team.
0:13:58 > 0:14:01- Have you made a decision? - We have.- It's the kitchen sink!
0:14:03 > 0:14:07So, this is the third heaviest of all of the objects.
0:14:07 > 0:14:09Three kilograms of sink about to be suspended
0:14:09 > 0:14:12from plungers pushed together by air pressure...
0:14:13 > 0:14:14..by Zoe.
0:14:16 > 0:14:21'If she gets this, the plungers will be holding up a combined total of 8.8 kilograms.'
0:14:23 > 0:14:26- That's on.- Oh, dear. - All you've got to do now is suspend it. Good luck.
0:14:26 > 0:14:28A-a-ah!
0:14:28 > 0:14:30Ah! Oh!
0:14:33 > 0:14:37'Success for the reds, which means that the pressure is really on for the yellows.'
0:14:39 > 0:14:43They only have the sand-filled duck or the towel basket to choose from.
0:14:43 > 0:14:46And after careful deliberation, they go for the towels.
0:14:47 > 0:14:52- They've seen an opportunity to hang it. Scott, you're hanging back.- I am.
0:14:52 > 0:14:54It's going to fall.
0:14:54 > 0:14:58Remember, it has to be suspended. If it's not off the ground, it won't count.
0:14:59 > 0:15:02Leave it, leave it. Let go, let go.
0:15:04 > 0:15:08Ooh. That's it! You've done it, I'd say. Oh, hang on.
0:15:11 > 0:15:13The lavatory seat is now on the ground.
0:15:13 > 0:15:18I think, somehow, yellows, as we're on your go,
0:15:18 > 0:15:21it's got to fall to you to hang the lavatory seat again.
0:15:23 > 0:15:27'Could this be one challenge too far for the yellows?
0:15:27 > 0:15:31'Never has anyone in the history of Blast Lab attempted a removal,
0:15:31 > 0:15:34'then reattachment, of a lavatory seat held up by two plungers.
0:15:34 > 0:15:38'The reds can't believe it. It's detached.'
0:15:39 > 0:15:42'And now for the reattachment.'
0:15:42 > 0:15:45- Ooh, that's an interesting piece of play, I'm not sure if it'll work. - Oh.
0:15:45 > 0:15:49Yes, well done, well done. Well, that's it, they've done it!
0:15:55 > 0:15:56There's only one left.
0:15:56 > 0:16:01'And, at 6.4 kilograms, if the reds manage to hang the duck the plungers will be holding
0:16:01 > 0:16:05'more than 20 kilograms and it will be a draw.
0:16:05 > 0:16:07'Surely, they can't hold this added weight.'
0:16:09 > 0:16:13Just be careful as you do it. Right, get the hook in, hold on. Get the hook in.
0:16:16 > 0:16:18Right, we've taken the weight, step back.
0:16:19 > 0:16:20Oh!
0:16:22 > 0:16:25It was always going to happen. The point goes to the yellows.
0:16:27 > 0:16:30That was one of the most tense things we've ever done in Blast Lab.
0:16:30 > 0:16:33Not the most tense, obviously, because nothing exploded.
0:16:33 > 0:16:36Yellows come back, well done. A point goes to the yellows.
0:16:36 > 0:16:40The score now is 2-nil to the yellows. Sorry.
0:16:41 > 0:16:45Sorry, reds, vacuums are surprising things.
0:16:45 > 0:16:48Did you know sound can't actually travel through a vacuum,
0:16:48 > 0:16:53which is why you should not send an opera singer into space because it makes them really angry.
0:16:53 > 0:16:55There's nothing worse than an angry opera singer.
0:16:56 > 0:17:00Meet Luciano Pavaratti, the fat man of the opera.
0:17:03 > 0:17:07He's the greatest opera singer the world has ever seen. Ever.
0:17:08 > 0:17:13His passion for music is matched only by his love of all things food.
0:17:13 > 0:17:17So much so, he even grows award-winning marrows just for fun.
0:17:18 > 0:17:20His secret? He sings to them.
0:17:22 > 0:17:25Some might say this technique by Pavaratti is a bit strange.
0:17:25 > 0:17:29Well, it is. Look at it, it's just odd.
0:17:29 > 0:17:32Who sings to a marrow? It's just weird.
0:17:33 > 0:17:37Anyway, things aren't all rosy in Pavaratti's herb garden.
0:17:44 > 0:17:49This is Ratkeen Jenkins, Pavaratti's arch rival.
0:17:49 > 0:17:53She hates Pavaratti like Pavaratti hates skinny jeans.
0:17:54 > 0:18:00But she loves dramatic entrances even more than Pavaratti loves sausage rolls.
0:18:00 > 0:18:02He's always been one step ahead of her.
0:18:02 > 0:18:05And when she realised that he was appearing on Blast Lab,
0:18:05 > 0:18:06it was the final straw.
0:18:06 > 0:18:09Time to get some revenge.
0:18:12 > 0:18:14While he's unconscious,
0:18:14 > 0:18:16she'll destroy his most prized possession.
0:18:16 > 0:18:20No, not that sausage roll, something much more precious.
0:18:20 > 0:18:25His marrow-growing greenhouse, using the power of her voice alone.
0:18:25 > 0:18:28But first, she needs to warm up those vocal cords
0:18:28 > 0:18:31by trying to smash a glass.
0:18:31 > 0:18:34SHE SINGS HIGH-PITCHED NOTE
0:18:34 > 0:18:36I guess that's why
0:18:36 > 0:18:39she's maybe only the second-best opera singer in the world.
0:18:39 > 0:18:42I think we'll need some technology
0:18:42 > 0:18:47to help us harness the power of resonance and smash the glass.
0:18:47 > 0:18:48And an animation to explain it all.
0:18:48 > 0:18:51Resonance is all about vibrations.
0:18:51 > 0:18:53All objects, no matter what, vibrate,
0:18:53 > 0:18:57but there are some frequencies that can make an object vibrate more.
0:18:57 > 0:18:59A lot more.
0:18:59 > 0:19:01These frequencies are called resonant frequencies
0:19:01 > 0:19:05and the out-of-control vibration is called resonance.
0:19:05 > 0:19:07To smash a glass using this resonance
0:19:07 > 0:19:09a note must be produced of the right pitch
0:19:09 > 0:19:12to match the resonant frequency of the object.
0:19:12 > 0:19:16If this note is held, the glass should vibrate violently,
0:19:16 > 0:19:19eventually smashing into smithereens.
0:19:19 > 0:19:23The singer must hit exactly the right note
0:19:23 > 0:19:26that matches the resonant frequency of the glass.
0:19:26 > 0:19:29This red zone on the screen shows where it is.
0:19:29 > 0:19:31So will Ratkeen be successful
0:19:31 > 0:19:35and break the glass with the power of her voice?
0:19:35 > 0:19:38RATKEEN HOLDS HIGH-PITCHED NOTE
0:19:39 > 0:19:41Hold the experiment right there
0:19:41 > 0:19:44because there's another point up for grabs now.
0:19:44 > 0:19:47OK, the score right now is 2-nil, so you can't draw,
0:19:47 > 0:19:50but come on, think of the honour, think of the glory
0:19:50 > 0:19:55and it hinges on this question - will the glass smash?
0:19:55 > 0:19:58So, red team, do you think the glass will smash?
0:19:58 > 0:20:00- Yeah.- Yes, you do.
0:20:00 > 0:20:02- Yellows, what do you think?- Yep.
0:20:02 > 0:20:06If it smashes, it'll be a point apiece, so it won't change the scores,
0:20:06 > 0:20:08but you'll have earned the point.
0:20:08 > 0:20:09So let's find out.
0:20:09 > 0:20:10On with the experiment!
0:20:12 > 0:20:16OK. Ratkeen's ready, the glass is ready.
0:20:16 > 0:20:19- Here she goes. - RATKEEN HOLDS NOTE
0:20:19 > 0:20:21She's in the red zone.
0:20:21 > 0:20:23There's some movement!
0:20:23 > 0:20:25Oh, it's gone!
0:20:25 > 0:20:29We can actually see the glass begin to vibrate and distort
0:20:29 > 0:20:34as Ratkeen hits the right note before the glass smashes to pieces.
0:20:34 > 0:20:36Well, there you go - it works!
0:20:39 > 0:20:42No going home and singing at your glasses at home.
0:20:42 > 0:20:43So that's a point apiece.
0:20:43 > 0:20:46That takes the scores to three to the yellows one to the reds.
0:20:46 > 0:20:48Well done - at least you're off zero!
0:20:48 > 0:20:51So, important now for you guys to go and get changed
0:20:51 > 0:20:53into your protective chemical suits.
0:20:53 > 0:20:55Boy, are you going to need them.
0:20:55 > 0:20:58Meanwhile, Ratkeen should've probably left it at that.
0:20:58 > 0:21:00But, of course, in my Blast Lab
0:21:00 > 0:21:03there is no such thing as "leaving it at that."
0:21:04 > 0:21:07With Pavaratti's glass in pieces on the floor,
0:21:07 > 0:21:09a bit like Pavaratti himself,
0:21:09 > 0:21:14Ratkeen is keen to move on to his most prized possession -
0:21:14 > 0:21:16his greenhouse.
0:21:17 > 0:21:19It's vibrating, but it won't budge.
0:21:19 > 0:21:22The thicker glass of the greenhouse
0:21:22 > 0:21:25is just too strong for the resonance.
0:21:25 > 0:21:29It looks like Ratkeen's not happy, but I don't think she's giving up.
0:21:30 > 0:21:35So what devilish plan does the evil Ratkeen have?
0:21:35 > 0:21:40She's leaving soundwaves behind and is going for shockwaves instead
0:21:40 > 0:21:44by placing a batch of explosives right behind the greenhouse.
0:21:45 > 0:21:49Not very scientific, but definitely effective.
0:21:51 > 0:21:53Ooh, that looks painful.
0:21:53 > 0:21:57The greenhouse has shattered into millions of pieces.
0:21:58 > 0:22:02Clearly destroying Pavaratti's chances of growing marrows again
0:22:02 > 0:22:05unless of course he buys another greenhouse.
0:22:08 > 0:22:11Victory for Ratkeen and greenhouse haters everywhere.
0:22:15 > 0:22:18Well, there's no time to cry over spilt glass
0:22:18 > 0:22:20because we need to move on.
0:22:20 > 0:22:21Team?
0:22:24 > 0:22:26This is my septic tank.
0:22:26 > 0:22:29You have Some Time to get as many prize discs
0:22:29 > 0:22:32into these baskets here.
0:22:32 > 0:22:34On those discs will be names of prizes.
0:22:34 > 0:22:37There's a Tomb Of Doom game, a metal detector and an air boat set,
0:22:37 > 0:22:40but be careful, because lurking in there,
0:22:40 > 0:22:42there is this, a red and yellow herring.
0:22:42 > 0:22:45If this ends up in your basket, then you will lose a prize disc.
0:22:45 > 0:22:47And remember, that could be the difference
0:22:47 > 0:22:50between winning or losing the game.
0:22:50 > 0:22:54Yellows, you're ahead on points, so you get the five-second head start.
0:22:54 > 0:22:55OK, your Some Time starts...
0:22:55 > 0:22:58I don't know... Now!
0:22:59 > 0:23:01'The yellows are off.
0:23:01 > 0:23:05'Adopting the rarely seen static crouch technique here today.
0:23:05 > 0:23:07'Oh, there's the second siren
0:23:07 > 0:23:11'and the reds, who are almost invisible in this sea of red gunge,
0:23:11 > 0:23:15'begin searching for the hallowed prize discs.
0:23:15 > 0:23:18'And Scott has finally got the yellows off the mark.
0:23:18 > 0:23:21'Bethany fights through the gunge to score first for the reds.'
0:23:21 > 0:23:23It's OK, because before we start this time,
0:23:23 > 0:23:26I'll remember to warn them about the extra gunge that comes down.
0:23:26 > 0:23:29I've forgotten again.
0:23:30 > 0:23:33'Both teams seem to be going nowhere fast.
0:23:33 > 0:23:36'Currently, the only clear winner is the red goo that surrounds them.'
0:23:38 > 0:23:41They're having a tough battle today, really struggling.
0:23:41 > 0:23:46It is always possible that whatever lives in there has eaten the discs.
0:23:46 > 0:23:47It confuses it a bit.
0:23:47 > 0:23:51'The search goes on. Where are those prize discs?
0:23:51 > 0:23:54'I'm pretty sure I left them in there somewhere.'
0:23:58 > 0:24:00'Ah! Finally, one for the reds.'
0:24:04 > 0:24:06'And another for the yellows.
0:24:06 > 0:24:09'And another, and another!
0:24:09 > 0:24:11'With Some Time running out, the prize discs
0:24:11 > 0:24:14'are flowing thick and fast.
0:24:14 > 0:24:16'Much like the gunge from the pipes above.'
0:24:16 > 0:24:21Five, four, three, two, one.
0:24:26 > 0:24:29- That was late!- That was agony, watching that happen then.
0:24:29 > 0:24:32Is that Bethany doing that? Who had that last one?
0:24:32 > 0:24:34We may have to discount one of those.
0:24:34 > 0:24:36Let's find out exactly how many each team has got.
0:24:36 > 0:24:39Lab rats, can we have you counting, please?
0:24:39 > 0:24:42That toxic gunge is deadly, and I don't want it to hurt me.
0:24:42 > 0:24:43OK, how many for the yellows?
0:24:43 > 0:24:46Four. How many for the reds?
0:24:46 > 0:24:49So there's three in there.
0:24:49 > 0:24:53Technically, we have to discount one that went in after the klaxon,
0:24:53 > 0:24:57but it makes no difference because the yellow team are the winners with four!
0:24:57 > 0:24:59CHEERING AND APPLAUSE
0:24:59 > 0:25:00Let's get them here.
0:25:00 > 0:25:03Ready, Ninja Nan? Show us what we've won.
0:25:03 > 0:25:07You're each going to take home a Swingball Junior Basketball...
0:25:07 > 0:25:09a Butterfly Garden.
0:25:11 > 0:25:13I don't know what one is, but you've got one each.
0:25:13 > 0:25:16A card game, each of you.
0:25:16 > 0:25:18And a Vectron Fly UFO,
0:25:18 > 0:25:21Yeah! One of those for each of you yellows!
0:25:21 > 0:25:23Now the slightly trickier side of it.
0:25:23 > 0:25:26Reds, there's no other way of putting this,
0:25:26 > 0:25:29this is what you would've won. Puzzle Cube.
0:25:29 > 0:25:30Oh, dear.
0:25:30 > 0:25:32Chemistry Set.
0:25:32 > 0:25:34Oh!
0:25:34 > 0:25:37And an air boat set for each of you that...
0:25:37 > 0:25:38Yeah.
0:25:38 > 0:25:42Sadly though, on Blast Lab, only one team goes home with their prizes in working order.
0:25:42 > 0:25:45Now, listen, I don't make the rules.
0:25:45 > 0:25:46No, actually, I do.
0:25:46 > 0:25:50And the rules state that it is now time for Bidet Goes Bang!
0:25:57 > 0:26:01Yellows, congratulations, well done,
0:26:01 > 0:26:03all of those going home with you.
0:26:03 > 0:26:05So, no wonder you're all looking quite pleased.
0:26:05 > 0:26:08Well done, well played from the beginning.
0:26:08 > 0:26:10- Reds, what went wrong for you, do you think?- All...
0:26:10 > 0:26:13Oh, here it comes, this avalanche of excuses!
0:26:13 > 0:26:16Yes, because I'm small, the gunge is really high
0:26:16 > 0:26:18so when I bent down, I went under the gunge.
0:26:18 > 0:26:21I'm quite small. It has been pointed out to me on more than one occasion.
0:26:21 > 0:26:24No allowance is made for me, so none was made for you.
0:26:24 > 0:26:27Never mind, follow me, come on.
0:26:27 > 0:26:29SOFT ROCK MUSIC PLAYS
0:26:39 > 0:26:42See? You're looking quite chirpy now, it's not so bad.
0:26:42 > 0:26:44It's all right, really.
0:26:44 > 0:26:46Right...
0:26:46 > 0:26:49We must bring this sombre moment to a close, girls,
0:26:49 > 0:26:52by blowing up all of your prizes. That's what we have to do.
0:26:52 > 0:26:55Right, lift the plunger, please. Audience, count them down from five!
0:26:55 > 0:27:00Five, four, three, two, one.
0:27:05 > 0:27:08- Well done, girls. - CHEERING AND APPLAUSE
0:27:10 > 0:27:14Today we learned about air pressure and vacuums, using toilet utensils,
0:27:14 > 0:27:17and that the power of soundwaves can cause big trouble,
0:27:17 > 0:27:19especially if you're a greenhouse enthusiast.
0:27:19 > 0:27:22Now, I'm off to listen to Pavaratti's new album. I can't wait!
0:27:22 > 0:27:24So until next time, goodbye.
0:27:24 > 0:27:27CHEERING AND APPLAUSE
0:27:41 > 0:27:44Subtitles by Red Bee Media Ltd
0:27:44 > 0:27:47Email: subtitling@bbc.co.uk