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# Explanation about Watercycle

     Precipitation is a vital component of how water mover through Earth's watercycle, connecting the ocean, land, and athmosphere. Knowing where it rains, how much it rains and the character of the falling rain, snow or hail allows scientists to better understand precipitations impact on stream, rivers, surface run off and ground water. Freequent and detailed measure ments help scientist make models of and determine change in earth's water cycle.



# Explanation about "Why Do the Season Change?"

The earth axis is an imaginary lime running between the north and south poles. Each say, the earth makes one full rotation on its axis. This rotation takes 24 hours, which we call one day. While the earth is busy turning daily circle. It's also travelling along a giant oval path around the sun. This path is called earh's orbit. It takes our planet 365 days to make one complete trip around the sun. In fact, that trip around the sun is how we define one year. That means, on any given day, the earth is slightly pointed toward or away from the sun. As the earth travels around the sun over the course of a years and the tilt of its axis pants yout hemisphere toward or away from the sun, you experience the changing of the seasons.