0:00:35 > 0:00:37But how hard can this be? We're both scientists.
0:00:37 > 0:00:39Eh, plug the monitor cable
0:00:39 > 0:00:42into the other socket on the back of the computer.
0:00:42 > 0:00:43ELECTRICAL BUZZING
0:00:43 > 0:00:46EXPLOSION
0:00:46 > 0:00:48Ah... No, no, it's worked, it's fixed.
0:00:48 > 0:00:50Well done! You did it. Have a seat. You'll be fine.
0:00:50 > 0:00:53Hello, I'm Richard Hammond. This is my Blast Lab!
0:00:53 > 0:00:57CHEERING
0:00:57 > 0:01:01I called it that because when things go wrong, and they do, sometimes,
0:01:01 > 0:01:03you will often hear me shout, "Blast!"
0:01:03 > 0:01:04In a moment or two,
0:01:04 > 0:01:07we'll be meeting two teams of budding young scientists,
0:01:07 > 0:01:11who'll be taking part in scientific challenges and contests
0:01:11 > 0:01:12here in my secret lab.
0:01:12 > 0:01:16Although, now I've told you it's secret, it's no longer a secret.
0:01:16 > 0:01:17Oh, blast!
0:01:30 > 0:01:33Unfortunately, my SAS protection force
0:01:33 > 0:01:35can't be here to guard the lab today,
0:01:35 > 0:01:38because they're attending extra classes in flower arranging.
0:01:38 > 0:01:41They don't want to miss a lesson cos it'll spoil the course.
0:01:41 > 0:01:44But never mind, because I've made arrangements of my own.
0:01:44 > 0:01:47She's an expert in ninjitsu - my nan.
0:01:47 > 0:01:50She can break a brick clean in half with her head,
0:01:50 > 0:01:54which is quite useful for cutting the cakes that she bakes.
0:01:54 > 0:01:55She is, of course, my Ninja Nan!
0:01:57 > 0:02:00CHEERING
0:02:05 > 0:02:09Ninja Nan. Thank you for standing in.
0:02:09 > 0:02:12Yes, she looks fragile. She is, in fact, a fully trained ninja.
0:02:12 > 0:02:17KUNG-FU MOVIE SOUND EFFECTS
0:02:17 > 0:02:18See?
0:02:18 > 0:02:22Nan, if you'd like to make your way through security and get settled in.
0:02:22 > 0:02:23Nan? Turn it up!
0:02:23 > 0:02:26Thank you. If you'd like to make your way into security.
0:02:26 > 0:02:31Thank you, very much, indeed. There she goes. Look at her move.
0:02:31 > 0:02:35She's so tough, she eats that cereal with the lion on the front of it.
0:02:35 > 0:02:37Not the flakes, the actual lion bit!
0:02:37 > 0:02:40Ninja Nan, are you settled into security yet?
0:02:40 > 0:02:43Oh, lab rat's in the chair. She's not going to...
0:02:43 > 0:02:45No, she didn't like that. Sorry, lab rat.
0:02:45 > 0:02:49Sorry. She can get settled in now and be ready to guard us all.
0:02:49 > 0:02:53It's a great feeling of security that you get, knowing she's there.
0:02:53 > 0:02:55We shall now meet the teams
0:02:55 > 0:02:57who are trying to get into my lab today.
0:02:57 > 0:02:58Come on out!
0:03:00 > 0:03:03They say they're the Yellow Team, but we don't know.
0:03:03 > 0:03:05We can't be too careful. This is a top secret lab
0:03:05 > 0:03:07so I've got some security checks.
0:03:07 > 0:03:10First of all, identify yourselves by name.
0:03:10 > 0:03:14- Lewis.- Louisa.- Harry.
0:03:14 > 0:03:16Lewis, Louisa, Harry. Yes, that all checks out fine.
0:03:16 > 0:03:18"Hidden Talent".
0:03:18 > 0:03:21It says here that you can all dance. Can you?
0:03:21 > 0:03:23ALL: Yes.
0:03:23 > 0:03:24Prove it.
0:03:26 > 0:03:28Yeah, well... I'd say that was...
0:03:28 > 0:03:31Do you know, I can almost hear the music, watching that.
0:03:31 > 0:03:32Nearly.
0:03:32 > 0:03:35Yeah, I would say that's a dance routine going on there
0:03:35 > 0:03:36and it's a grand finish.
0:03:36 > 0:03:39You're cleared through security. Come in!
0:03:39 > 0:03:41CHEERING
0:03:44 > 0:03:47Sorry, Yellow Team. I can't be too careful.
0:03:47 > 0:03:48People want to get in here.
0:03:48 > 0:03:50Got to make sure. Where are you all from?
0:03:50 > 0:03:56Essex! And we are Teamtastic Fantastic!
0:03:56 > 0:03:58You've got your own name!
0:03:58 > 0:04:00You don't need it. You're the Yellow Team.
0:04:00 > 0:04:03Lovely to have you here. Now we're gonna meet the bunch of people
0:04:03 > 0:04:05who claim to be your opposition.
0:04:05 > 0:04:07They say they're the Reds.
0:04:07 > 0:04:10CHEERING
0:04:10 > 0:04:13Hold it there. They've only got as far as security.
0:04:13 > 0:04:15They're not past Ninja Nan, because...
0:04:15 > 0:04:18Well, I don't know who you are yet. You haven't proved it.
0:04:18 > 0:04:20For security, your names, please,
0:04:20 > 0:04:22so I can check them off the list.
0:04:22 > 0:04:24- Robert.- Jenny.- Ollie.
0:04:24 > 0:04:28Yeah, Robert, Jenny, Ollie, that checks out.
0:04:28 > 0:04:29Ollie, I've got your name here.
0:04:29 > 0:04:32Under "Hidden Talent", it says break-dancing.
0:04:32 > 0:04:35- Yeah.- Really?- Yeah.- Prove it.- OK.
0:04:40 > 0:04:42Yeah, I'd say that was a bit of break-dancing.
0:04:42 > 0:04:45You're cleared through security. Come into the Blast Lab.
0:04:45 > 0:04:49CHEERING
0:04:49 > 0:04:51I believe you.
0:04:51 > 0:04:53Welcome to the lab. Where are you all from?
0:04:53 > 0:04:57Devon. And we're the Explosive Loonies.
0:04:57 > 0:05:00Clever name, but useless. You're the Red Team and that's that.
0:05:00 > 0:05:03Lovely to have you here, though. These are our teams.
0:05:03 > 0:05:07It's time for them to go and get settled in, ready to play round one.
0:05:07 > 0:05:09Away you go, go and get comfortable.
0:05:09 > 0:05:12To help us out I'd like to introduce a friend of mine.
0:05:12 > 0:05:14He is the thinking man's Rolls-Royce
0:05:14 > 0:05:16and the gullible man's Ferrari.
0:05:16 > 0:05:17It is Oliver!
0:05:34 > 0:05:37CHEERING
0:05:37 > 0:05:40He may look old and rusty... Well, he is old and rusty,
0:05:40 > 0:05:42but you always know where you are with Oliver.
0:05:42 > 0:05:44Actually, even that isn't strictly true,
0:05:44 > 0:05:47because I've taken his sat nav out,
0:05:47 > 0:05:50and replaced it with a hi-tech Fact Nav system.
0:05:50 > 0:05:53The only thing is, because I fitted it, it doesn't always work.
0:05:53 > 0:05:56A lot of the facts in there are incorrect.
0:05:56 > 0:06:00So it's up to my two teams to decide which are true and which are false.
0:06:00 > 0:06:02Oliver will then give us the real answer.
0:06:02 > 0:06:06- If it's true, he'll do this... - HORNS BLARE
0:06:06 > 0:06:11- And if it's false, he'll do this... - SHIP'S HORN BOOMS
0:06:11 > 0:06:16OK, teams, this is your first chance to earn points in Blast Lab.
0:06:16 > 0:06:17Reds, you're going first.
0:06:17 > 0:06:20Here is your fact. You have to tell me if this is true or false.
0:06:20 > 0:06:24Recycling one aluminium can
0:06:24 > 0:06:27saves enough energy to power a television for three hours.
0:06:27 > 0:06:29Is that true or false?
0:06:29 > 0:06:31Have a chat, have a talk. Talk about it.
0:06:31 > 0:06:32THEY WHISPER
0:06:32 > 0:06:34Audience, what do we think? True or false?
0:06:34 > 0:06:38AUDIENCE: True!
0:06:38 > 0:06:42Most, well, nearly all... I saw a few mind changes down here.
0:06:42 > 0:06:44I'm not sure. That's what the audience think.
0:06:44 > 0:06:46Don't just do what they say.
0:06:46 > 0:06:49They don't always know everything. You're the experts.
0:06:49 > 0:06:52- We've worked it out. - What are you going to say?
0:06:52 > 0:06:54- True.- True.- Yeah.- OK.
0:06:54 > 0:06:56Oliver, is it true or false?
0:06:56 > 0:06:58- HORNS BLARE - It's true!
0:06:58 > 0:07:01That's a point for the Red Team straight away. Well done.
0:07:01 > 0:07:05Recycling aluminium saves 95% of the energy used to make it from scratch,
0:07:05 > 0:07:07but that doesn't take into account,
0:07:07 > 0:07:09you've to transport the aluminium,
0:07:09 > 0:07:12or collect the cans - it's a complicated thing to work out.
0:07:12 > 0:07:17But aluminium can be recycled again and again and again -
0:07:17 > 0:07:19reprocessing doesn't damage it. See?
0:07:19 > 0:07:23That's new stuff you didn't know. Yellows, time for your science fact.
0:07:23 > 0:07:26Here it comes. You have to tell me, is this true or false?
0:07:26 > 0:07:28Most meteors and meteoroids
0:07:28 > 0:07:31are the size of a small car.
0:07:31 > 0:07:32Such as, for instance...
0:07:32 > 0:07:35Oliver. Is that true or false?
0:07:35 > 0:07:37Have a think between you.
0:07:37 > 0:07:40Audience, what do we reckon, is that true or false?
0:07:40 > 0:07:44AUDIENCE SHOUTS
0:07:44 > 0:07:47We're splitting the audience. There's a load of false there,
0:07:47 > 0:07:50a load of true. I reckon it's about half and half.
0:07:50 > 0:07:53Have we come up with an answer?
0:07:53 > 0:07:57- False.- You reckon it's false. Does anybody know the answer to this,
0:07:57 > 0:07:59did anybody have any information?
0:07:59 > 0:08:02- ALL: No, we just voted. - You voted?
0:08:02 > 0:08:05I like that. It's a team decision.
0:08:05 > 0:08:08You're agreed, false. Oliver, is it true or false? Tell us.
0:08:08 > 0:08:09- SHIP'S HORN BOOMS - It is false.
0:08:09 > 0:08:11That means a point to the Yellows as well!
0:08:11 > 0:08:14CHEERING
0:08:14 > 0:08:16Most meteoroid particles are small,
0:08:16 > 0:08:19ranging from a small grain of sand to a pea-sized pebble.
0:08:19 > 0:08:21They don't sound exciting when you say that.
0:08:21 > 0:08:26You think of them crashing to earth. Argh! And it's a small...pea.
0:08:26 > 0:08:28Not as dramatic, really. Not very good for films.
0:08:28 > 0:08:32Right, the third question. This one isn't a true or false.
0:08:32 > 0:08:34This is the one I want you to answer.
0:08:34 > 0:08:35Write your answers on the boards.
0:08:35 > 0:08:38Have a good think first. Here comes the question.
0:08:38 > 0:08:42The Atlantic Ocean is increasing in width every year,
0:08:42 > 0:08:46but by how much?
0:08:46 > 0:08:49Audience, anybody here got a clue? Any idea about that?
0:08:49 > 0:08:50I can come and ask you,
0:08:50 > 0:08:54using one of my inventions that I made here in the lab. It's a boot,
0:08:54 > 0:08:59I know, rather a stylish item, but it's combined with a microphone.
0:08:59 > 0:09:02Very, very hi-tech, and it works.
0:09:02 > 0:09:04- A kilometre? - I'm not going to answer. Any ideas?
0:09:04 > 0:09:08- Three metres?- Three metres. I'm thinking I might give...
0:09:08 > 0:09:13the audience and the teams a clue...
0:09:13 > 0:09:17by telling you that the answer is going to be in centimetres.
0:09:17 > 0:09:19Audience, what do you reckon?
0:09:19 > 0:09:22- Seven centimetres?- OK, any other ideas? Anybody else?
0:09:22 > 0:09:27- No, anybody got a clue? We have... - 50cm?
0:09:27 > 0:09:29You're just naming numbers! OK.
0:09:29 > 0:09:30Well, we have stumped the audience.
0:09:30 > 0:09:33I don't think I've seen that happen before.
0:09:33 > 0:09:35Teams, have you written an answer down?
0:09:35 > 0:09:38Yellows, you've agreed an answer. Reds, have you agreed an answer?
0:09:38 > 0:09:40- ALL: Yes. - OK.
0:09:40 > 0:09:41Show us your answers.
0:09:41 > 0:09:44The Atlantic Ocean increases in width every year by...
0:09:44 > 0:09:50the Reds say 90 centimetres. The Yellows say 100 centimetres.
0:09:50 > 0:09:54We're both going for round about the metre mark.
0:09:54 > 0:09:58I can tell you the real answer is 3 centimetres every year -
0:09:58 > 0:10:00the Reds take the points!
0:10:00 > 0:10:02CHEERING AND APPLAUSE
0:10:02 > 0:10:07The score is 2-1 to the Reds after the first round.
0:10:19 > 0:10:21CHEERING
0:10:21 > 0:10:24That's all to come. Right now it is time for Mini Science.
0:10:24 > 0:10:25This is a round where our teams
0:10:25 > 0:10:28use ordinary, boring household objects
0:10:28 > 0:10:31to conduct extraordinary scientific experiments.
0:10:31 > 0:10:32To help with this,
0:10:32 > 0:10:35I wanted to bring back my old science teacher from school.
0:10:35 > 0:10:38So I invented a time machine, and it worked!
0:10:38 > 0:10:40A bit too well as it turned out,
0:10:40 > 0:10:42because she came back as a 10-year-old.
0:10:42 > 0:10:44I'm talking, of course, of our Mini Miss!
0:10:47 > 0:10:49CHEERING
0:10:49 > 0:10:52You really are my science teacher from school?
0:10:52 > 0:10:56Oh, yes, I spent seven years trying to drum science
0:10:56 > 0:10:58into your little brain, Richard.
0:10:58 > 0:11:00It was a horrendous experience.
0:11:00 > 0:11:04- Sorry about that one, Miss. - I won't forget that in a hurry.
0:11:04 > 0:11:06Sorry, Miss. It's time for Mini Science.
0:11:06 > 0:11:11- What are we doing today?- We're looking at the Archimedes principle.
0:11:11 > 0:11:13This means that for something to float
0:11:13 > 0:11:16- it has to displace its weight in the water.- OK.
0:11:16 > 0:11:20The size and weight of an object determines whether it will do this,
0:11:20 > 0:11:22- or not. - Miss, can I demonstrate this?
0:11:22 > 0:11:24- Yes.- I've worked something out here.
0:11:24 > 0:11:29I have here some modelling clay that I've formed into a shape.
0:11:29 > 0:11:31Now this I put in the tank here.
0:11:31 > 0:11:33It floats.
0:11:33 > 0:11:35What it's doing is what the Archimedes principle says -
0:11:35 > 0:11:38it's displacing, pushing away an amount of water that,
0:11:38 > 0:11:41if you took that amount of water,
0:11:41 > 0:11:43would weigh more than the lump of modelling clay.
0:11:43 > 0:11:45It's the shape that's doing it.
0:11:45 > 0:11:48If I change the shape, and turn it into just a lump,
0:11:48 > 0:11:52this is the same modelling clay, it weighs the same as before.
0:11:52 > 0:11:54The only thing that's changed is the shape,
0:11:54 > 0:11:57and the way that will work in the water. It sinks immediately.
0:11:57 > 0:12:00It's no longer pushing away, displacing an amount of water
0:12:00 > 0:12:03that's equal, or more than, what it weighs.
0:12:03 > 0:12:06- That's correct, isn't it, Miss? - Yes.- I worked that out myself.
0:12:06 > 0:12:10The teams are going to test different objects to see if they sink or float.
0:12:10 > 0:12:12They have six objects to choose from.
0:12:12 > 0:12:15They are a small orange, a magnifying glass,
0:12:15 > 0:12:18a tennis racquet, a rolling pin, a melon and a sieve.
0:12:18 > 0:12:21The teams have to take it in turns to choose objects
0:12:21 > 0:12:24which they think will float, and test them by dropping them in the water.
0:12:24 > 0:12:26OK, so that's the game, teams.
0:12:26 > 0:12:30You've got six objects in front of you. Those are between you all.
0:12:30 > 0:12:32Each team chooses an object.
0:12:32 > 0:12:35You then bring it over here to Archimedes' very own bath
0:12:35 > 0:12:39that we have here in the Blast Lab, and put it in.
0:12:39 > 0:12:43Then it's the moment of truth, we'll see if it floats.
0:12:43 > 0:12:45The winning team is the team to choose
0:12:45 > 0:12:47the number of objects that float.
0:12:47 > 0:12:50- Reds, you're ahead right now on points.- Yup.
0:12:50 > 0:12:53So you get to choose whether you go first or second.
0:12:53 > 0:12:55I'll give you time to think about that.
0:12:57 > 0:12:59- Reds, are you going first or second? - ALL: First.
0:12:59 > 0:13:01You're going first. OK, well, step up,
0:13:01 > 0:13:03look at the six objects.
0:13:05 > 0:13:07- Reds, made your decision? - ALL: Yes.
0:13:07 > 0:13:09Which object are you going with?
0:13:09 > 0:13:10- The sieve.- This mesh here.
0:13:10 > 0:13:14Lab rat, in you come, please. Let's mark this up for the Reds.
0:13:14 > 0:13:15If we have that marked,
0:13:15 > 0:13:19Reds, step forward to Archimedes' bath, and let's see if it floats.
0:13:19 > 0:13:23This is our first of six objects. Jenny, good luck.
0:13:25 > 0:13:27That didn't work at all, did it?
0:13:27 > 0:13:31Bad luck! If you would like to go back. Yellows, your turn next.
0:13:33 > 0:13:38Probably the surprising thing here is just how much water weighs.
0:13:38 > 0:13:41Heavy old stuff, water, so that shape needs to be a shape
0:13:41 > 0:13:43that will push away quite a lot of it...
0:13:43 > 0:13:47when the object itself doesn't weigh that much.
0:13:47 > 0:13:48It's about shape and weight.
0:13:48 > 0:13:50Yellows, made your mind up?
0:13:50 > 0:13:53- Yes.- Reds, you can't choose your object till they have.
0:13:53 > 0:13:54This is really heavy.
0:13:54 > 0:13:58Do you want to go? We'll go with the rolling pin.
0:13:58 > 0:14:02The rolling pin? Lab rat, let's have this marked up for the Yellow Team.
0:14:04 > 0:14:07- OK, Lewis.- Go on, Lewis!
0:14:07 > 0:14:11Archimedes' very own bath. Take your time. Take your time.
0:14:11 > 0:14:13Are we ready? Here we go. Audience, will it float?
0:14:13 > 0:14:15Yes, it does.
0:14:15 > 0:14:20You can see it is displacing water that weighs more than it. Right!
0:14:20 > 0:14:23Yellows, you're one up. Reds, it's your turn to pick an object.
0:14:23 > 0:14:25You've already chosen?
0:14:25 > 0:14:28- ALL: Yeah. - Is that a tangerine or a satsuma?
0:14:28 > 0:14:31- I don't know.- I don't know either. It's one of those.
0:14:31 > 0:14:33Lab rat, can we have that marked?
0:14:38 > 0:14:40Oh, no!
0:14:40 > 0:14:44- That's not worked at all, has it? - No.
0:14:44 > 0:14:45Maybe it will float back up?
0:14:45 > 0:14:50Swim little tangerine! No, it's...sunk. Bad luck.
0:14:50 > 0:14:53Back to your team. Yellows, have you made your decision?
0:14:53 > 0:14:55Magnifying glass.
0:14:55 > 0:14:56Why do you think it will float?
0:14:56 > 0:14:59I think it's like, if you half it, it's symmetrical,
0:14:59 > 0:15:03- and it will balance the weight out. - It is symmetrical, yes.
0:15:03 > 0:15:04It's symmetrical that way.
0:15:04 > 0:15:06Lab rat, let's have this marked up.
0:15:08 > 0:15:11Yellows, if you get this,
0:15:11 > 0:15:14if you think about it - there's six objects -
0:15:14 > 0:15:17so if this one floats, you've won.
0:15:18 > 0:15:20This is a decider.
0:15:20 > 0:15:22If this floats, the Yellow Team has won.
0:15:22 > 0:15:25If not, we'll have to find out... OK, you see,
0:15:25 > 0:15:27it didn't even look like it would float.
0:15:27 > 0:15:30Bad luck, Yellows. That then weighing more
0:15:30 > 0:15:32than the amount of water it displaces, and sinking.
0:15:32 > 0:15:34Right, Reds, you need this one.
0:15:34 > 0:15:37It'll keep you in the game. Have you made your mind up?
0:15:37 > 0:15:39- Yep.- Yep.- What you going with?
0:15:39 > 0:15:41- ALL: The melon. - Who's gonna do it?- Me!
0:15:41 > 0:15:45Robert. You're feeling brave, happy to volunteer. Lab rat,
0:15:45 > 0:15:47can we mark this up for the Red Team, please?
0:15:47 > 0:15:50The Reds, then, need this to stay in the game.
0:15:50 > 0:15:52They lose this, it's all over.
0:15:52 > 0:15:55So this is another critical, critical moment.
0:15:55 > 0:15:57You need this to stay in the game.
0:15:58 > 0:16:01Oh! Oh, ah! Hang on!
0:16:01 > 0:16:03- It floats. - I would say that was floating!
0:16:03 > 0:16:06Reds, you're still in the game, well done.
0:16:06 > 0:16:07I think why not.
0:16:11 > 0:16:14So Yellows, would you like to choose
0:16:14 > 0:16:18the tennis racquet, the tennis racquet, or the tennis racquet?
0:16:18 > 0:16:20I think we'll go with the tennis racquet.
0:16:20 > 0:16:22I think that's a brilliant idea. Well chosen.
0:16:22 > 0:16:25Lab rat, can we mark it up, please?
0:16:25 > 0:16:28If this floats, you've won the game.
0:16:28 > 0:16:31You take the point. If it sinks, it's a draw.
0:16:31 > 0:16:33It doesn't make any difference. No points.
0:16:33 > 0:16:34Let's not put it top of that.
0:16:34 > 0:16:39Let's keep this clear. You need a clear bit of the bath. Good luck.
0:16:39 > 0:16:42And it's floating. Yellow Team wins...
0:16:42 > 0:16:44- CHEERING - ..and takes the point.
0:16:44 > 0:16:47Well done! But it is surprising to see
0:16:47 > 0:16:50which materials float, and which ones don't.
0:16:50 > 0:16:51That has got me thinking,
0:16:51 > 0:16:55could my lab rats make a boat out of something you wouldn't expect?
0:16:55 > 0:16:56I don't know...cardboard.
0:16:58 > 0:17:03Location, the picturesque county of Warwickshire.
0:17:03 > 0:17:08The aim, to construct a boat out of cardboard, and make it float.
0:17:08 > 0:17:13Obviously, rivers can be extremely dangerous. Never try this yourself.
0:17:13 > 0:17:16At Blast Lab, we take health and safety very seriously,
0:17:16 > 0:17:20so we've got a highly trained lifeguard close to hand.
0:17:21 > 0:17:24# Some people stand in the darkness
0:17:24 > 0:17:28# Afraid to step into the light... #
0:17:28 > 0:17:30Under Ninja Nan's strict supervision,
0:17:30 > 0:17:34the lab rats set about turning a pile of ordinary cardboard boxes
0:17:34 > 0:17:37into what looks a bit like a boat.
0:17:37 > 0:17:39The reason boats float
0:17:39 > 0:17:43can be explained by the Archimedes principle.
0:17:43 > 0:17:47For our boat to float, it needs to displace, which means push aside,
0:17:47 > 0:17:51a volume of water that's the same, or more, as the weight of the boat.
0:17:51 > 0:17:54However, this usually relies on the boat
0:17:54 > 0:17:56being made of a waterproof material,
0:17:56 > 0:18:00like metal, plastic, or painted wood, not cardboard.
0:18:00 > 0:18:03# Sail away, sail away, sail away... #
0:18:03 > 0:18:07In any case, their cardboard boat is now finished,
0:18:07 > 0:18:10and all that's left to do is launch it, jump in,
0:18:10 > 0:18:11and see if it floats.
0:18:11 > 0:18:15# Sail away, sail away, sail away... #
0:18:15 > 0:18:17Hold the experiment right there!
0:18:17 > 0:18:19The scores right now are a draw, 2-all,
0:18:19 > 0:18:23so I think there's another point in this. I'll ask you a question,
0:18:23 > 0:18:26both teams. Let's see how you do for this extra point.
0:18:26 > 0:18:28And the question is this -
0:18:28 > 0:18:32will the cardboard boat that the lab rats built
0:18:32 > 0:18:37float for...five minutes with two lab rats in it?
0:18:37 > 0:18:40Have a think, have a chat. Have a think.
0:18:40 > 0:18:43Audience, what do you reckon? I'm gonna come and talk to you,
0:18:43 > 0:18:45using my amazing microphone boot.
0:18:45 > 0:18:49It could be for sale in shops near you very soon.
0:18:49 > 0:18:52- Any idea? Whisper.- No.- No, right!
0:18:52 > 0:18:55No, because the two lab rats will weigh more than the boat,
0:18:55 > 0:18:59- and the boat will sink. - You think, according to Archimedes,
0:18:59 > 0:19:03it won't be able to displace water equal to its own weight,
0:19:03 > 0:19:06and it'll sink. You think Archimedes will defeat their boat.
0:19:06 > 0:19:09- Anybody else?- I think it might sink,
0:19:09 > 0:19:13because the Sellotape they stuck it with might lose its stickiness.
0:19:13 > 0:19:17- The sticky tape won't be sticky? - No.- Oh. It'll fall apart?- Yes.
0:19:17 > 0:19:19You think the tape's going to let go,
0:19:19 > 0:19:22you think Archimedes is going to defeat them, and it'll sink?
0:19:22 > 0:19:25OK. A range of theories from the audience.
0:19:25 > 0:19:27This is a brilliant invention. It's a boot.
0:19:27 > 0:19:31Teams, have you both come up with answers? Have you agreed?
0:19:31 > 0:19:33You all agree, Yellows, Reds, agree on your answer?
0:19:33 > 0:19:38The spokesperson is going to be Oliver and Lewis
0:19:38 > 0:19:40to give your answers, so you can't change them.
0:19:40 > 0:19:44Oliver, what is your answer, do you think it will or not? As a team...
0:19:46 > 0:19:47We think it's going to float.
0:19:47 > 0:19:50You think it'll float for five minutes with two lab rats.
0:19:50 > 0:19:53- Yellows?- We think it's going to float as well.
0:19:53 > 0:19:55Both teams could cancel out the point,
0:19:55 > 0:20:00and we'll go on to the next round as a draw. Let's see what happens.
0:20:00 > 0:20:03Remember, these are nautically trained lab rats.
0:20:03 > 0:20:06Don't try this yourself.
0:20:12 > 0:20:14And, incredibly, it does float!
0:20:16 > 0:20:21And our lab rats are able to cruise the open seas with ease.
0:20:21 > 0:20:23It worked! It actually floated,
0:20:23 > 0:20:26which I think is worth a round of applause for the lab rats, actually.
0:20:26 > 0:20:29- CHEERING - Enough. Let's not overdo it.
0:20:29 > 0:20:31They are lab rats. Not too much praise for them.
0:20:31 > 0:20:34But it did work, so a point to both teams.
0:20:34 > 0:20:38The scores are 3-all, time for us to move on to the final round.
0:20:38 > 0:20:41For that, both teams, you need to change into your protective outfits.
0:20:41 > 0:20:43Go and get ready, away you go.
0:20:43 > 0:20:45While they do that,
0:20:45 > 0:20:51it's worth sharing, audience, yeah, it worked for five minutes...
0:20:51 > 0:20:54but then it turns out there are a few problems
0:20:54 > 0:20:57associated with making a boat out of cardboard.
0:20:59 > 0:21:00Nothing lasts for ever.
0:21:00 > 0:21:03The cardboard begins to weaken, and leak water into the boat.
0:21:03 > 0:21:05And before long,
0:21:05 > 0:21:09we have a genuine case of lab rats leaving the sinking ship.
0:21:09 > 0:21:12And Ninja Nan's long since gone.
0:21:12 > 0:21:15She's home watching Strictly Come Dancing,
0:21:15 > 0:21:19so it's up to the lab rats to save themselves. Yeah, you see,
0:21:19 > 0:21:21you leave them on their own, they have an idea,
0:21:21 > 0:21:23and that's where it gets them.
0:21:23 > 0:21:26Right, it's time to move on to the Messy Messy Mess Test.
0:21:29 > 0:21:35Which today is the gungy bungee, featuring my Blast Lab catapults.
0:21:35 > 0:21:37I did originally design and build these
0:21:37 > 0:21:39for airborne cat transportation,
0:21:39 > 0:21:42but it really didn't work. Here's the game, then.
0:21:42 > 0:21:44Teams, you've got to get as many of these pods
0:21:44 > 0:21:47featuring the names of prizes on them across the tank.
0:21:47 > 0:21:51This being Blast Lab, there is, of course, a twist.
0:21:51 > 0:21:54You may have noticed a team member from each team
0:21:54 > 0:21:58standing in the tank of hideous, unnameable gunge.
0:21:58 > 0:22:00You all right in there? Comfortable? Good.
0:22:00 > 0:22:03You'll notice tape stretched across the tank.
0:22:03 > 0:22:04This is for your own safety,
0:22:04 > 0:22:07because I spotted something moving in there earlier on.
0:22:07 > 0:22:10Big, really big!
0:22:10 > 0:22:14A lot of teeth. So this tape, I'm sure, will keep it back.
0:22:14 > 0:22:16Do not go past that tape, all right?
0:22:16 > 0:22:19Beyond that, at the other end of the tank, is the prize zone.
0:22:19 > 0:22:21That's your target, teams.
0:22:21 > 0:22:24You've got to get as many of these prize pods, using the catapult,
0:22:24 > 0:22:27across the tank, past the opposing team member,
0:22:27 > 0:22:28and into the prize zone.
0:22:28 > 0:22:31The team to get the most prize pods into the prize zone
0:22:31 > 0:22:34will get to take home all the prizes written on them.
0:22:34 > 0:22:38The losing team will have to blow theirs up. It's just the way of it.
0:22:38 > 0:22:42OK? As it's a draw right now, scores are even,
0:22:42 > 0:22:45you're both starting at the same time.
0:22:45 > 0:22:48You have some time to get as many prize pods across the tank
0:22:48 > 0:22:52and into the prize zone as you can. That some time starts...
0:22:52 > 0:22:53now!
0:22:53 > 0:22:57Away we go with both teams starting at the same time.
0:22:57 > 0:23:00Yellows first to get the prize pod to the catapult.
0:23:00 > 0:23:03AUDIENCE: Yellow! Yellow!
0:23:03 > 0:23:04Like any artillery,
0:23:04 > 0:23:08it takes time to zone in and find your target.
0:23:08 > 0:23:12Right now, I think they're getting the range, checking the elevation,
0:23:12 > 0:23:16and the Reds have got the first prize pod in the prize zone.
0:23:18 > 0:23:20Ooh, another one for the Reds
0:23:20 > 0:23:22just makes its way into the prize zone.
0:23:22 > 0:23:25The Yellows still trying to find their range,
0:23:25 > 0:23:28but in goes another for the Reds. Look at that.
0:23:28 > 0:23:32The Yellows getting an amazing amount of height on that shot.
0:23:32 > 0:23:34Some great deflection work going on
0:23:34 > 0:23:37from the Red Team player in the pool.
0:23:37 > 0:23:41Another one was about to land in the prize zone, but they batted it away.
0:23:41 > 0:23:43It's mean, taking pleasure from that,
0:23:43 > 0:23:44but I did!
0:23:47 > 0:23:50The Yellows still not quite finding the range.
0:23:50 > 0:23:52However, Harry, the Yellow blocker,
0:23:52 > 0:23:54is really lobbing the prize pods back to the firer.
0:23:54 > 0:23:56Good tactics, that.
0:23:56 > 0:23:58And, yes, it's working,
0:23:58 > 0:24:01as another prize pod goes in for the Yellow Team.
0:24:01 > 0:24:03The Reds look to be ahead,
0:24:03 > 0:24:05but the Yellows are starting to come back into this.
0:24:09 > 0:24:12And, yes, another one drops into the prize zone for the Yellows.
0:24:12 > 0:24:15And another!
0:24:17 > 0:24:19It could be anybody's, this game.
0:24:19 > 0:24:23There's firing prize pods, blocking, unspeakable gunge.
0:24:23 > 0:24:25It's all going on in there.
0:24:25 > 0:24:27I think the only thing that will decide this
0:24:27 > 0:24:30is my some time random indicator invention,
0:24:30 > 0:24:34which, by my calculations, should be...
0:24:34 > 0:24:35soon.
0:24:40 > 0:24:43- KLAXON - Game's over! Game's over!
0:24:43 > 0:24:46Everybody stop right where you are.
0:24:46 > 0:24:50That made quite a mess in my lab. Yeah.
0:24:50 > 0:24:52Let's find out which team has won.
0:24:52 > 0:24:56Down to the prize zone, my two lab rats have been counting them up.
0:24:56 > 0:24:59OK, lab rat here, how many for the Yellow Team?
0:24:59 > 0:25:01Four prize pods for the Yellows.
0:25:01 > 0:25:04And for the Reds, how many have we got? Eight for the Reds!
0:25:04 > 0:25:06That means the Reds are the winners!
0:25:06 > 0:25:08- CHEERING - Well done, Reds.
0:25:08 > 0:25:10Sorry, Yellows.
0:25:10 > 0:25:13Let's find out, Reds, what you've won.
0:25:13 > 0:25:14Ninja Nan, ready?
0:25:14 > 0:25:16You get a super cricket kit...
0:25:16 > 0:25:17CHEERING
0:25:17 > 0:25:20..a science magic set...
0:25:20 > 0:25:22a lunar eclipse bedroom light,
0:25:22 > 0:25:25a Disgusting Digestion kit...
0:25:25 > 0:25:28an MP3 player...
0:25:28 > 0:25:30a Horrible Science book...
0:25:30 > 0:25:33a brainteaser jigsaw...
0:25:33 > 0:25:34an electromagic kit. There!
0:25:34 > 0:25:39Those are your prizes, Reds, all coming home with you.
0:25:39 > 0:25:42Yellows, this is the less than easy bit for you.
0:25:42 > 0:25:44This is what you would have won.
0:25:44 > 0:25:45An electromagic kit.
0:25:45 > 0:25:47- AUDIENCE: Aww. - Yeah, yeah, yeah.
0:25:47 > 0:25:49Cricket kit, would have been nice.
0:25:49 > 0:25:52- Yeah, MP3 player. - AUDIENCE: Aww.
0:25:52 > 0:25:54You'd have liked that.
0:25:54 > 0:25:57- Lunar eclipse bedroom light. - AUDIENCE: Aww!
0:25:57 > 0:26:01And instead of taking them home, the Yellows are going to blow them up -
0:26:01 > 0:26:02time for Bidet Goes Bang!
0:26:10 > 0:26:12Well, it's that time again.
0:26:12 > 0:26:16Here we all are, Red Team looking quite happy, actually,
0:26:16 > 0:26:20if I can see you past the enormous pile of prizes. Well done, Reds.
0:26:20 > 0:26:24You played very well. Very well. Yellows, how are you feeling?
0:26:24 > 0:26:26ALL: Disappointed.
0:26:26 > 0:26:30Yeah. yeah. That's the sort of mood I'm getting off all three of you.
0:26:30 > 0:26:34- What went wrong in that game, then? - I just think...
0:26:34 > 0:26:36we could have done better at the aiming.
0:26:36 > 0:26:38It's not easy, is it?
0:26:38 > 0:26:41You've got to aim, get the right power... Still, never mind
0:26:41 > 0:26:44because, well, here we are.
0:26:44 > 0:26:47Before I moved my exploding bidet down here into the lab,
0:26:47 > 0:26:49it used to make a real mess of the ensuite,
0:26:49 > 0:26:52but now it's here, I can use it as much as I like. So here we go.
0:26:52 > 0:26:54Your prizes are in there and ready.
0:26:54 > 0:26:57- Who's pushing the plunger? - ALL: All of us.
0:26:57 > 0:26:59You'll share the blame. I think that's best.
0:26:59 > 0:27:02Step forward and lift the plunger up into the firing position.
0:27:02 > 0:27:06Lift it up... There you go. Right, we're all going to count you down.
0:27:06 > 0:27:07Ready?
0:27:07 > 0:27:10ALL: Five, four, three...
0:27:10 > 0:27:12two...one!
0:27:12 > 0:27:15EXPLOSION
0:27:17 > 0:27:21Yup! Sorry, Yellows. That's it for another show.
0:27:21 > 0:27:22We learned about buoyancy.
0:27:22 > 0:27:25Remember, if you want to test things that float,
0:27:25 > 0:27:28it is probably best to steer clear of your mum's best china.
0:27:28 > 0:27:30Oh, I don't know! See you next time.
0:27:30 > 0:27:34CHEERING
0:27:38 > 0:27:41Blast Lab was recorded before a live studio audience.
0:27:41 > 0:27:44No lab rat was harmed during the filming,
0:27:44 > 0:27:46except the work experience one.
0:27:56 > 0:27:59Subtitles by Red Bee Media Ltd
0:27:59 > 0:28:02E-mail subtitling@bbc.co.uk