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The History of the Earth in 24 Hours

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Age of Earth

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Terms in this set (16)

4.5 billion years
(4,500,000,000 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.

86%

(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.)