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Science 3: Sedimentary Rocks and Ancient Buildings 115 Views
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Description:
We wanted to make a video about sedentary rocks, but we couldn't get lazy uncle Rocky off the couch. Oh well. We'll teach you about sedimentary rocks instead.
Transcript
- 00:05
[Dino and Coop singing]
- 00:13
Choosing a pet can be hard. [Dog asleep on a chair]
- 00:15
Sure, dogs and cats are some of the most affectionate pets around, but who wants to pick up poop [Cat licking a girl's face]
- 00:19
every day? Not us. [Cat litter]
- 00:21
And fish are most certainly the easiest pet to care for, but you can't exactly play fetch
Full Transcript
- 00:25
with one, now can you? [Girl chucking a stick for a fish to fetch]
- 00:27
But never fear. We have found the perfect pet for you… one that's
- 00:30
often overlooked, but pretty much perfect… [Tortoise walking around]
- 00:33
The pet rock.
- 00:34
They're obedient, trust-worthy, and you can take them anywhere. They don't make a mess
- 00:38
and you don't even need to feed them. What's not to love? [Bowl of cereal next to the pet rock]
- 00:41
Best of all, rock can be found everywhere!
- 00:44
In fact, one specific kind of rock covers 75% of the Earth's land surface – sedimentary rock.
- 00:50
And no, that's not a type of relaxing soft rock music you might hear in a new age spa. [People relaxing in a spa]
- 00:54
Sedimentary rock is rock formed by “sediment” - that is, the remains of rock getting moved [Coop pointing at a blackboard]
- 00:59
from one place to another before settling and eventually combining with other sediments [Dino pointing at a blackboard]
- 01:03
to form a new rock.
- 01:04
Sedimentary rock includes the most common rock types you'll find on Earth, like chalk,
- 01:09
limestone, sandstone, clay and shale. And as we all know, we humans are a resourceful
- 01:14
bunch – if there's a whole lot of something just sitting around, well, we're not just [Wheelbarrow full of clay]
- 01:18
gonna let it sit around doing nothing for much longer. We're going to put it to use! [Someone modelling clay]
- 01:22
And throughout history, humans have put sedimentary rock to good use.
- 01:26
One of the most famous examples of humans using rocks is when the ancient Egyptians [Picture of the pyramids]
- 01:30
used limestone to build the pyramids over 4,000 years ago.
- 01:33
Huge bricks of stone were carved from quarries of limestone before being pulled by thousands
- 01:38
and thousands of slaves and stacked on top of one another to form the pyramids.
- 01:42
It's thought that building the pyramids took approximately twenty years, and they remain
- 01:46
one of the great wonders of the ancient world. [Tourist taking a picture of the pyramids]
- 01:49
Plus, they're nice little toys for that giant cat to bat around.
- 01:52
Other famous examples of structures built using sedimentary rock include... [Picture of the Sphinx]
- 01:56
Machu Picchu, which was built in the 15th century in Peru and has nothing to do with Pokémon… [Picture of Pikachu appears]
- 02:01
The Great Wall of China, completed in the 14th century in, you guessed it, China...
- 02:05
Big Ben, built in 1859 in London...
- 02:08
And the White House, finished in 1800 in Washington, D.C..
- 02:12
These are just a few examples of the many amazing structures we've built using the Earth's [Examples of sedimentary rocks]
- 02:16
sedimentary rock – making it the world's most important rock. [A 'most important rock' medal is stuck to one of the rocks]
- 02:19
Well…except for rock and roll. Sorry, sedimentary rock. Rock and roll is always king. [Elvis dancing]
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