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BELL RINGS | 0:18:02 | 0:18:04 | |
According to this, we've mapped more of the surface of Mars than | 0:18:04 | 0:18:08 | |
the bottom of the Earth's oceans. Isn't that amazing? | 0:18:08 | 0:18:11 | |
That is fascinating, Dr Knowles. | 0:18:11 | 0:18:14 | |
Er, what's going on, Colin? You seem VERY relaxed. | 0:18:14 | 0:18:17 | |
It's part of my new healthy regime. | 0:18:17 | 0:18:20 | |
No more stress for me, no matter what stunt McCork pulls. | 0:18:20 | 0:18:23 | |
Sorry I'm late, Colin. | 0:18:23 | 0:18:25 | |
My car broke down and my dog got sick and I fell in a hole... | 0:18:25 | 0:18:28 | |
Not to worry, McCork. Take your place when you're ready. | 0:18:28 | 0:18:31 | |
We're going live shortly. | 0:18:31 | 0:18:33 | |
What's up with your man? | 0:18:33 | 0:18:35 | |
This is Brain Freeze... | 0:18:35 | 0:18:38 | |
with Dr Knowles... | 0:18:38 | 0:18:40 | |
Professor McCork... | 0:18:40 | 0:18:44 | |
and Colin the floor manager. | 0:18:44 | 0:18:48 | |
Stand by! | 0:18:48 | 0:18:50 | |
Hi and welcome to Brain Freeze. | 0:18:58 | 0:19:00 | |
It's time to reveal... | 0:19:00 | 0:19:01 | |
Today we ask... | 0:19:04 | 0:19:05 | |
How deep is the ocean? That's a Justin Bieber song, isn't it? | 0:19:07 | 0:19:10 | |
The deep sea is the lowest layer of the ocean | 0:19:10 | 0:19:13 | |
and includes anything below 200 metres | 0:19:13 | 0:19:16 | |
right down to over ten kilometres. | 0:19:16 | 0:19:18 | |
And the deep sea is one of the largest habitats | 0:19:18 | 0:19:21 | |
for living creatures on the planet. That's a fact. | 0:19:21 | 0:19:23 | |
Now, since the 1960s, scientists have discovered some incredible creatures | 0:19:23 | 0:19:28 | |
that have adapted to the darkness and high pressure of the deep sea. | 0:19:28 | 0:19:31 | |
Creatures. | 0:19:31 | 0:19:32 | |
What kind of creatures? | 0:19:32 | 0:19:34 | |
There's the flashlight fish and the angler fish, | 0:19:34 | 0:19:36 | |
who have evolved their own system of lighting... | 0:19:36 | 0:19:39 | |
FISH ROARS, HE SCREAMS | 0:19:39 | 0:19:41 | |
The fangtooth fish, which has been found at depths near 5,000 metres | 0:19:41 | 0:19:44 | |
and has the largest teeth of any fish relative to its size. | 0:19:44 | 0:19:47 | |
Amazing. I wonder if he'd be tasty with a bag of chips. | 0:19:47 | 0:19:50 | |
HE SCREAMS | 0:19:51 | 0:19:53 | |
And these sea cucumbers, also known as sea pigs. | 0:19:53 | 0:19:56 | |
Well, they're just really well-adapted | 0:19:56 | 0:19:58 | |
to living under pressure. | 0:19:58 | 0:19:59 | |
Speaking of pigs under pressure, I'm off to see what Colin's doing. | 0:19:59 | 0:20:03 | |
But, Professor, we're live! | 0:20:03 | 0:20:05 | |
So unprofessional! | 0:20:05 | 0:20:07 | |
SHE CLEARS HER THROAT Back after this break. | 0:20:07 | 0:20:09 | |
Colin? Hey, Colin, Colin? | 0:20:13 | 0:20:15 | |
Ah, where's he gone? | 0:20:15 | 0:20:17 | |
Channel all negative thoughts outward | 0:20:19 | 0:20:21 | |
and embrace your inner butterfly. | 0:20:21 | 0:20:23 | |
Sorry, Colin. Just to let you know we're taking a break now, OK? | 0:20:25 | 0:20:29 | |
Ignoring all other distractions that may be present... | 0:20:30 | 0:20:34 | |
Oh, and, Colin, Dr Knowles was wondering | 0:20:34 | 0:20:36 | |
if you wanted anything down the shop. | 0:20:36 | 0:20:39 | |
..we are now in an unbreakable state of calm. | 0:20:39 | 0:20:43 | |
One last thing, Colin - did I show you my new pogo stick? | 0:20:43 | 0:20:47 | |
Oh, McCork, you've ruined it! | 0:20:47 | 0:20:49 | |
How am I supposed to relax when you keep interrupting me?! | 0:20:49 | 0:20:52 | |
Yeah, yeah, yeah. It's like it's got a life of its own! | 0:20:52 | 0:20:54 | |
Oh, crumpets! Get back to work, McCork. | 0:20:54 | 0:20:57 | |
We're going live. | 0:20:57 | 0:20:59 | |
Welcome back. | 0:21:00 | 0:21:02 | |
Megan just got in touch to say, "Will you please hurry up | 0:21:02 | 0:21:04 | |
"and tell us where the deepest part of the ocean is?" | 0:21:04 | 0:21:06 | |
That means it's time for... | 0:21:06 | 0:21:08 | |
At almost 11 kilometres deep, | 0:21:11 | 0:21:13 | |
the Mariana Trench in the Pacific Ocean is the deepest known part. | 0:21:13 | 0:21:17 | |
-To be specific. -No, no, Pacific. -Yeah, I was being specific. | 0:21:17 | 0:21:21 | |
To give you an idea of how deep that is, this huge trench is | 0:21:21 | 0:21:24 | |
a full 2,000 metres deeper than Mount Everest is tall. | 0:21:24 | 0:21:28 | |
Tell me, Doctor, | 0:21:28 | 0:21:29 | |
how does the pressure change being down that deep? | 0:21:29 | 0:21:31 | |
Pressure in the ocean increases at about one atmosphere for every | 0:21:31 | 0:21:35 | |
ten metres of depth. | 0:21:35 | 0:21:36 | |
So the pressure at the bottom would be like trying to | 0:21:36 | 0:21:39 | |
carry around 50 jumbo jets. | 0:21:39 | 0:21:41 | |
Whoa! Now that's real pressure. | 0:21:41 | 0:21:43 | |
That's all for today, folks. See you next time on Brain Freeze. | 0:21:43 | 0:21:47 | |
Clear, and that's a wrap. | 0:21:48 | 0:21:51 | |
Yes, of course, boss. No dangerous equipment on set. | 0:21:52 | 0:21:55 | |
Yeah, including pogo sticks. | 0:21:55 | 0:21:56 | |
Ah, isn't it great to see him back to his old self again, Dr Knowles? | 0:21:56 | 0:22:00 | |
Yeah. I don't know what he'd do without you, Professor(!) | 0:22:00 | 0:22:03 | |
Hup! Anyway, I'm off home. See you later. | 0:22:03 | 0:22:07 |