EARTH SCIENCE
OCEANS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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comets and meteorites containing ice hit earth and melted upon collision forming oceans
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eruptions released water vapor into the air forming clouds and eventually rain which filled ocean basins
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both explanations are accurate
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neither explanation is accurate
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Detailed explanation-1: -The ocean formed billions of years ago. Water remained a gas until the Earth cooled below 212 degrees Fahrenheit . At this time, about 3.8 billion years ago, the water condensed into rain which filled the basins that we now know as our world ocean.
Detailed explanation-2: -Where did Earth’s oceans come from? Astronomers have long contended that icy comets and asteroids delivered the water for them during an epoch of heavy bombardment that ended about 3.9 billion years ago. But a new study suggests that Earth supplied its own water, leaching it from the rocks that formed the planet.
Detailed explanation-3: -Earth’s Early Atmosphere and Oceans. Volcanic eruptions spewed gases from Earth’s interior to the atmosphere, a process called outgassing that continues today. Most of the gas was carbon dioxide and water vapor. The water vapor condensed to form part of Earth’s oceans as the surface cooled.
Detailed explanation-4: -The new research suggests that Earth’s water came from both rocky material, such as asteroids, and from the vast cloud of dust and gas remaining after the sun’s formation, called the solar nebula.