Transcript Earth*s Innards - Allendale School

Earth’s Innards
Have you ever tried to dig to China?
How far did you get?
Do you think anyone could journey
to the center of the earth?
This well is about 4 meters deep – I bet
you didn’t get this far!
The deepest known cave is just over 2 kilometers deep.
(Krubera Cave in Abkhazia, Georgia.)
The deepest mine in the world is the
Tau Tona gold mine in South Africa.
It is 3.8 kilometers deep.
We can DRILL deeper than we can dig. Oil drills reach
from 5 to 8 kilometers deep!
But we have still barely scratched the surface!!!!
So how deep is it anyway???
12, 742 km
This is the diameter of the earth. How deep would you have to drill just to
get to the center? (Hint: Halfway through!)
The deepest hole drilled into Earth is the Kola Peninsula Superdeep Borehole in
Russia - - the plan was to reach the mantle.
After 19 years, they had only gotten 12, 262 meters deep!
(It is really hard to drill that deep!)
How much deeper would
you need to drill to make
it all the way to the center
of the earth?
How about all the way
through to the
other side?
Humans have never even made it
through to the mantle!
(There is currently a project underway in Japan
attempting to drill through oceanic crust to the
mantle.)
Think of how thin an apple skin is:
The earth’s crust is even thinner
compared to the rest of the earth than
the apple skin is compared to the rest of
the apple!
You have learned about the three main
layers of the earth:
But now we can see it’s a little more
complicated than that:
Even though we won’t be digging to
China, we’ll be learning lots of cool
stuff about the earth!
The End!