When the Earth first formed it had large quantities of water vapor in its atmosphere while today the levels of water vapor are much lower. Where did most of the water vapor go?

Question

Quizplus · Accepted Answer

As the Earth cooled down, the water vapor in the atmosphere condensed and fell as precipitation, which formed the oceans. This process is known as the "outgassing" of water. Therefore, most of the water vapor in the early Earth's atmosphere condensed into the oceans.

When the Earth First Formed It Had Large Quantities of Water