The water cycle is one of the first science lessons children receive in elementary school. The lesson may go something like this: When water heats up, it turns from a liquid to a vapor. That water vapor rises up into the atmosphere, but it's colder up there. In the lower temperatures, the vapor begins to condense back into a liquid. Those tiny water droplets form clouds, and when the droplets grow large enough, they fall back down onto the Earth as raindrops or another form of precipitation.
Mar-28-2016, 18:05:52 GMT