Has the world's total water changed in the past 10 years?

Question

(the amount)

Answer 1

it has been constant

Answer 2

dude water is matter,matter cant be destroyed nor created proved by scientist and its the law of conservation of matter

Answer 3

I agree that it hasn't changed much. I found this site you will like -it has some graphs and ideas about related topics of water.

"Water is continually moving around, through, and above the Earth as water vapor, liquid water, and ice. In fact, water is continually changing its form. The Earth is pretty much a "closed system," like a terrarium. That means that the Earth neither, as a whole, gains nor loses much matter, including water. Although some matter, such as meteors from outer space, are captured by Earth, very little of Earth's substances escape into outer space. This is certainly true about water. This means that the same water that existed on Earth millions of years ago is still here. Thanks to the water cycle, the same water is continually being recycled all around the globe. It is entirely possible that the water you drank for lunch was once used by Mama Alosaurus to give her baby a bath.

By the way, there is a theory that much of Earth's water came from comets hitting the planet over billions of years."

can you iagin how many comets had to hit the earth and dump their water to make up the oceans?  And just think how long it took to do that?

That is a theory i would like to know more about.  

If you are writing a paper about earth changes,

read a lot

and them come to conclusions

It is much easier than stating a fact and then trying to proove it.

'Aint no substitute for larnin'

sorry

Answer 4

Depends on your view.  NO water sum was lost or gained.  However the state the water (ice, vapor, liquid)  has changed over the past 10 years.  Global warming has caused a reduction in the snow cover and an increase in liquid water on the surface of the earth.  

Answer 5

Actually, the earth gains water mass as well as other forms of matter constantly from small meteors that burn up in the atmosphere.  You should be able to find just how much is gained each day as estimated by NASA, by looking at the Planetary Sciences websites at major universities such as Univ of Texas, California Institute of Technology, and others or the NASA JPLs.

There have been several articles recently in Scientific American and Astronomy magazines, too.