Think about it...
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Transcript of Think about it...
Think about it...
“Dost thou love life?
Then do not squander time,
for that is the stuff life is made of.”
Benjamin Franklin (1706-1790)
Maxims prefixed to Poor Richard's Almanac, 1757
The Amazing Time Machine
Fast Times...
Slow Times...
In-between Times...
0
10
20
30
40
50
60
70
Class Average Generation Life Expectancy
It’s All Relative...
Gen’s Ago Event Years Ago
5 American Revolution 221 (1776)
12.62 Columbus finds America 505 (1492)
23.27 William the Conqueror 931 (1066)
50 A.D. 1 1996 (001)
500 Modern Man appears 20,000
1,625,000 Last dinosaur disappears 65 million
5,635,000 First dinosaur appears 225 million
112,500,000 Earth formed 4.5 billion
Texas Stadium
BIG Numbers
Ones 1
Tens 10
Hundreds 100
Thousands 1,000
Millions 1,000,000
Billions 1,000,000,000
Geologic Time
10-15
-12
-9
-6
-3
0
3
6
9
1000th of a second
1 second
1 minute
1 hour1 day
1 month1 year
1 thousand years
1 million years
1 billion years Age of the earth
Mountain range to be uplifted 3000m at 0.2mm/yr
Time for Atlantic Ocean to widen 1 km at 4 cm/yr
Human lifetimeMeasurable erosion of rivers and shorelines
Floods
Earthquake waves go through and around Earth
Time for 1 sound wave detectable by human ears
Nuclear ProcessesTime in years
Geologic Time ScaleEon Era Period Epoch Age
Quaternary Recent
Pleistocene Present
Pliocene
Cenozoic Miocene to
Tertiary Oligocene
Eocene 60-65 m.y.a.
Paleocene
Phanerozoic Cretaceous 60-65 m.y.a
Mesozoic Jurassic to
Triassic 230 m.y.a.
Permian
Pennsylvanian 230 m.y.a.
Mississippian
Paleozoic Devonian to
Silurian
Ordovician 600 m.y.a.
Cambrian
Cryptozoic Pre-Cambrian 600 m.y.a. to 4.6+ b.y.a.
The Geologic Clock
Football Field
Earth forms (4.6 b.y.a.)
1st microscopic life (3.5 b.y.a.)
1st fossil of large life-like sponges & jellyfish
1st dinosaur appeared
Today
0 50 100
Age
of D
inos
aurs
Hum
an b
eing
s ap
pear
10 yards
One YearJanuary 1, midnight 4.6 b.y.a. formation of the earth
early to mid-March 3.5-3.8 b.y.a. first life on earth
early-May 3 b.y.a. photosynthesis; blue-green algae
mid-November 570 m.y.a. first eukaryotic cells; shelled animals
Thanksgiving 400 m.y.a. Fish, vertebrates, land plants
December 7 300 m.y.a. Large swamps (coal), insects, reptiles
December 11 250 m.y.a. Beginning of the age of reptiles
December 15 200 m.y.a. Dinosaurs
December 20 130-140 m.y.a.Dinosaurs, fish, flowering plants
December 25 65 m.y.a. Mass extinction of dinosaurs
December 31, 4 pm 4 m.y.a. Earliest fossils of genus Homo
11:58:30 12,000 y.a. All of recorded history
11:59:46 2,000 y.a. Christian Era
A Piece of Pie?
Time’s Up!