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...
70
60
50
40
30
20
10
0
Class Average
Generation
Life Expectancy
It’s All Relative...
Gen’s Ago
5
Event
Years Ago
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
112,500,000 Earth formed
225 million
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
1 billion years
9
Age of the earth
Mountain range to be uplifted 3000m at 0.2mm/yr
1 million years
6
Time for Atlantic Ocean to widen 1 km at 4 cm/yr
1 thousand years
1 year
1 month
1 day
1 hour
1 minute
3
0
-3
-6
Human lifetime
Measurable erosion of rivers and shorelines
Floods
Earthquake waves go through and around Earth
1 second
-9
Time for 1 sound wave detectable by human ears
1000th of a second
-12
Nuclear Processes
Time in years
10 -15
Geologic Time Scale
Eon
Era
Period
Quaternary
Cenozoic
Tertiary
Phanerozoic
Mesozoic
Paleozoic
Cryptozoic
Pre-Cambrian
Cretaceous
Jurassic
Triassic
Permian
Pennsylvanian
Mississippian
Devonian
Silurian
Ordovician
Cambrian
Epoch
Recent
Pleistocene
Pliocene
Miocene
Oligocene
Eocene
Paleocene
Age
Present
to
60-65 m.y.a.
60-65 m.y.a
to
230 m.y.a.
230 m.y.a.
to
600 m.y.a.
600 m.y.a. to 4.6+ b.y.a.
The
Geologic
Clock
Football Field
0
50
100
1st fossil of large life-like sponges & jellyfish
1st dinosaur appeared
Earth forms (4.6 b.y.a.)
Today
Human beings appear
1st microscopic life (3.5 b.y.a.)
Age of Dinosaurs
10 yards
One Year
January 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!