Earth

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Earth
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Related Sciences
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Chaos Theory
How long is the coastline of the United States?
Depends on the length of the ruler used
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Chaos Theory
Weather models.. Only as good as the number of
variables inputted. Butterfly Effect In a
remote part of the Amazon jungle, a butterfly
alights upon a tree limb. The butterfly rests
there for a moment, and then flutters its wings.
A week later, the weather in New York is
affected. No instruments presently known could
measure the perturbation, but it happens. It is
called the Butterfly Effect. This strange
effect promotes the idea that in a chaotic
system, a very small change to that system
applied at a certain point in time makes the
future change in a very dramatic way. Something
as small as a butterfly flapping its wings now
might affect the weather system on a global scale
six months in the future.
Earth systems are all interrelated, and small
variables can cause significant changes.
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Catastrophism
All the Earths great landforms are the result of
great catastrophes.
Grand Canyon
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Europe
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Castle
Edinburgh Castle, Scotland
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Arthurs Seat
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Hutton Sign
James Hutton
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Huttons Section
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Uniformitarianism
The present is the key to the past
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Present day processes
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Time
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Geologic Time
Dec 31
Jan 1
Origin of the Earth January 1
Oldest known rocks Early March
Living things appear in oceans May
Land plants and organisms Late November
Dinosaurs Dominant from mid-December to the 26th
On the 31st
Humans appear 1149pm
End of last ice age 115817pm
Fall of Roman Empire 115949pm
Columbus 115957pm
World War I 115959.4pm
Y2K 115959.9993pm
Every real year equates to 1/7000 of a second
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Earths Interior
Inner core Solid iron Outer core Molten
metallic Ni and Fe
Mantle 82 of Earths volume. Fe and Mg-rich
rock.
Mesosphere Strong and rigid
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Tectonic Plates
Crust Rigid upper mantle (lithosphere)