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The History of the Earth in 24 Hours
History of evolution of life on earth: 4.5 billion years as a 24-hour day
Terms in this set (16)
Age of Earth
4.5 billion years
"Time" the FIRST LIFE appeared (single-celled organisms) in ocean.
0400 hours (4 a.m.)
% of Earth's time as a LIFELESS planet.
% of Earth's time as lifeless or having only simple sea life.
(17% dead, 69% simple sea organisms -- 04:00 to 20:30 hours)
Time when the LAND PLANTS appeared.
21:55 hours (9:55 p.m.)
Time when the first LAND CREATURES appeared.
22:05 hours (10:05 p.m.)
Time the TREES covered the land.
22:25 hours (10:25 p.m.)
Time when the DINOSAURS appeared.
22:55 hrs (10:55 p.m.)
The number of "minutes" DINOSAURS existed.
(147 million years)
Time when the PRIMATES (apes) appeared.
23:42 (11:42 p.m.)
--3 "minutes" (or 9 million years) after Dinosaurs died off.
Time when the HOMINID primates appeared.
1 minute 17 seconds before midnight -- about 4 million years ago
Time when the species Homo habilis appeared - the first tool user.
42 "seconds" before midnight
(only 2.2 million years ago)
Time when our species - Homo sapiens sapiens - appeared
THREE SECONDS AGO = about 150,000 years ago.
% of time HUMANS have lived on the Earth
(3/100,000 of 1%)
Total minutes dinosaurs lived
Total seconds Humans existed
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