Does the amount of water on earth change why or why not?

Answer 1

For the most part, the amount of water on Earth stays the same. The only way for the amount of Earth's water to increase would be for it to come from outer space. Not coincidentally, this is precisely what happens. Comets, made of dust and ice, enter the Earth's atmosphere and melt from the friction of the air as it plummets towards Earth's surface. The resulting water is then added to the already existing water in the earth's atmosphere (clouds), in bodies of water (oceans, lakes, etc.), and the water trapped in the form of ice (glaciers, icebergs, etc.)

Answer 2

No, the total amount of water on earth does not change, water is a renewable resource, it is recyclable, read up on the water cycle, look at these links:

http://ga.water.usgs.gov/edu/watercycle.html

http://www.usgcrp.gov/usgcrp/images/ocp2003/ocpfy2003-fig5-1.htm

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The total amount of water on Earth does change of the course of millions of years, as water-rich comets impact the Earth. There have been some speculations that cometary impacts may have been the primary source of water on the Earth!

Answer 3

It is not changing because of evaporation and condensation. They balance each other out. (Watercycle)

Answer 4

The Total Amount Of Air Is Changes Slowly Or Never Does

Answer 5

no it doesn't change cuz of the water cycle: parcipitation( falling from louds to earth), evaporation ( turning into a vapor) and concensation( turning back into the liquid form).

Answer 6

The total amount of water is the same, because gravity keeps it here. The amount of liquid water changes according to the seasons, and weather.

Answer 7

Slowly