0:00:02 > 0:00:03This is never going to work.
0:00:03 > 0:00:06It would take days to freeze this much ice cream.
0:00:06 > 0:00:10All set for our world-record attempt, Ms Hucklebuck?
0:00:10 > 0:00:14Well, almost. There is one slight concern with the...
0:00:14 > 0:00:18Excellent. Soon, my masterpiece will be complete -
0:00:18 > 0:00:21the world's biggest ice cream cone.
0:00:21 > 0:00:22HE CACKLES
0:00:24 > 0:00:26This won't end well.
0:00:26 > 0:00:27BELL RINGS
0:00:27 > 0:00:30We're live in five, four, three...
0:00:30 > 0:00:33ANNOUNCER: This is...
0:00:33 > 0:00:35With...
0:00:40 > 0:00:41..the floor manager.
0:00:44 > 0:00:46Stand by!
0:00:46 > 0:00:47Come on, everybody!
0:00:51 > 0:00:52- BOTH:- It's time for...
0:00:55 > 0:00:58Today, we're asking, can ice cubes sink in water?
0:00:58 > 0:01:01At a microscopic level, invisible to our eyes,
0:01:01 > 0:01:05water consists of two hydrogen atoms and one oxygen atom
0:01:05 > 0:01:08bonded together to form a molecule.
0:01:08 > 0:01:10Water can exist in three different states -
0:01:10 > 0:01:13liquid, gas and solid.
0:01:13 > 0:01:15As a liquid, the molecules are close together,
0:01:15 > 0:01:18but free to flow around each other.
0:01:18 > 0:01:21As a gas, the molecules are far apart and can move in
0:01:21 > 0:01:23all different directions.
0:01:23 > 0:01:26But when water hits its freezing point at zero degrees Celsius,
0:01:26 > 0:01:30the molecules take on a solid form known as ice.
0:01:30 > 0:01:31Speaking of ice,
0:01:31 > 0:01:33I wonder how my super-cone is doing.
0:01:33 > 0:01:34HE HUMS A TUNE
0:01:34 > 0:01:36- SHE SIGHS - See you after the break.
0:01:37 > 0:01:39And we're clear.
0:01:39 > 0:01:41This is it, McCork,
0:01:41 > 0:01:44the moment we've all been waiting for.
0:01:44 > 0:01:46Let the pour begin.
0:01:46 > 0:01:48But it's not frozen.
0:01:48 > 0:01:51He said, "Let the pour begin."
0:01:51 > 0:01:53OK. You asked for it.
0:01:53 > 0:01:54ELECTRONICS SPARK
0:01:54 > 0:01:55Uh-oh!
0:01:55 > 0:01:56ALARM BLARES
0:01:58 > 0:02:00No, this is all wrong!
0:02:00 > 0:02:03Stop the machine! Stop the machine!
0:02:03 > 0:02:06I can't. It's broken!
0:02:06 > 0:02:08I told you this was a bad idea.
0:02:08 > 0:02:09Run for your life!
0:02:09 > 0:02:10BELL RINGS
0:02:10 > 0:02:12Positions, everyone.
0:02:12 > 0:02:14If you can find them.
0:02:19 > 0:02:23So tell us, Dr Knowles, can ice cubes sink in water?
0:02:23 > 0:02:25First, let me ask YOU a question.
0:02:25 > 0:02:29If we took two identical jars and filled one with popcorn
0:02:29 > 0:02:32and the other with marbles, which one would be lighter?
0:02:32 > 0:02:34The popcorn one, obviously.
0:02:34 > 0:02:37Correct. Even though both jars are equal in volume -
0:02:37 > 0:02:41that is the popcorn and marbles take up the same amount of space -
0:02:41 > 0:02:43the first jar weighs less because
0:02:43 > 0:02:45the popcorn is less dense than the marbles.
0:02:45 > 0:02:47Less dense?
0:02:47 > 0:02:49Well, what has all that got to do with ice?
0:02:49 > 0:02:51The molecules in ice are arranged
0:02:51 > 0:02:53in a rigid framework that allow the water molecules
0:02:53 > 0:02:56to be more spread out, a bit like the popcorn in the first jar.
0:02:56 > 0:03:00Whereas the molecules in a liquid are more tightly packed together,
0:03:00 > 0:03:01more like the marbles.
0:03:01 > 0:03:05And if an object is less dense than the fluid it's in, it will float.
0:03:05 > 0:03:07If it's more dense, it will sink.
0:03:07 > 0:03:12So ice always floats in water because it's less dense?
0:03:12 > 0:03:15Exactly. Now you've got it.
0:03:15 > 0:03:17Ha! Maybe I'm not that dense after all, Doctor.
0:03:17 > 0:03:19ELECTRONICS SPARK
0:03:19 > 0:03:22Oh! I think we better get out of here, Professor.
0:03:22 > 0:03:25See you next time, folks. I hope!
0:03:26 > 0:03:27- COLIN:- And we're clear.
0:03:27 > 0:03:31So, then, Mr Artiste, what have you got to say for yourself?
0:03:31 > 0:03:33Can't talk, slurping.
0:03:33 > 0:03:34HE SLURPS
0:03:34 > 0:03:37News just in, everyone,
0:03:37 > 0:03:40looks like we've got the world record...
0:03:40 > 0:03:41What?
0:03:41 > 0:03:45..for world's biggest milkshake.
0:03:45 > 0:03:48Heh! Another one in the bag. HE SLURPS
0:03:48 > 0:03:50- Oh, come on. This is ridiculous.- Mm.
0:03:50 > 0:03:52Even by our standards.
0:03:52 > 0:03:56Colin, sometimes you just have to trust in the artistic process.
0:03:56 > 0:03:57Just suck it up.
0:03:57 > 0:03:58HE SLURPS
0:03:58 > 0:04:00THEY SIGH
0:04:12 > 0:04:13Brain freeze.