Great Oceans Form
Precambrian Eon: Hadeon Period
4,500 myo to 540 myo
Geology and Geologic Events
Transformations and Biological Events
Mass Extinction
Impact Event
Temperature
Oxygen vs. Carbon Dioxide
Biodiversity
Oceans formation
How did the oceans form?
1) Meteorites contain 5% water droplets.
2) When meteorites collided to make larger clumps and
eventually planet-sized objects, the water droplets were heated.
3) The heat caused the liquid water to evaporate into water vapor
and rise in the air.
4) Eventually, the water vapor cooled and condensed into liquid
and made clouds.
5) When clouds couldn’t hold any more liquid, it rained.
Early Earth was volcanic
Gases released from volcanoes
Water vapor, carbon dioxide, sulfur dioxide,
hydrochloric acid, nitrogen dioxide to name a
few..
The water vapor was needed for cloud
formation and rain.
Last observed
The water cycle (evaporation, condensation,
precipitation) is still observed today.
The rain lasted for several hundred million
years. (pbs.org) History.com also stated that it
rained for millions of years to create a water
world.
References
Earth Viewer app
Pbs.org states that the great oceans began forming 4,200 mya.
Wikipedia.org states that the oceans began forming 4,400 mya. By the
start of Archean time, they covered the earth.
http://www.history.com/shows/how-the-earth-wasmade/videos/oceans?
m=5189719baf036&s=All&f=1&free=false
References
need to cite references for images used too...
Great oceans form video
http://www.history.com/shows/how-theearth-was-made/videos/oceans?
m=5189719baf036&s=All&f=1&free=false