according to scientific hypothesis, how were earth's oceans formed? when do scientists hypothesiz they formed?
Are you talking about the first appearance of water or the development of the specific oceans that we now know?
Since this is not my area of expertise, I searched Google under the key words "ocean formation" to get these possible sources:
http://videos.howstuffworks.com/hsw/10373-global-ocean-realm-the-formation-of-oceans-video.htm
(Broken Link Removed)
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
I hope this helps. Thanks for asking.
According to the scientific hypothesis, Earth's oceans were formed around 4 billion years ago. The current prevailing hypothesis about the formation of Earth's oceans is the "outgassing" theory. Let me explain how scientists arrived at this hypothesis.
To understand the origins of Earth's oceans, scientists study various geological and astronomical processes. They examine the chemical composition of rocks, the isotopic ratios of certain elements, and also analyze data from other planets and celestial bodies.
The leading hypothesis suggests that Earth's oceans were primarily formed through outgassing. Early in its formation, Earth was a hot, molten planet without any significant atmosphere. As the planet cooled down, volcanic activity released gases, including water vapor, into the atmosphere.
Over time, these water vapor emissions condensed and formed clouds. The continuous cycle of condensation and rainfall eventually filled the depressions on Earth's surface, creating the first oceans. This process, known as the "outgassing hypothesis," is based on geological evidence, laboratory experiments, and observations of other planets that also have significant amounts of water.
Although the exact timeline of the ocean's formation is not precisely known, this hypothesis suggests that Earth's oceans emerged several hundred million years after the planet's formation. Understanding the origins of Earth's oceans helps scientists comprehend the early stages of our planet's development and the conditions that enabled the emergence of life.