# Is the total water on Earth a fixed amount?

I was watching a TV show this weekend about water conservation. The journalist who prepared the story stated the total amount of all water in the world is fixed. We can't make new water. Is this true?

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• Yogi
Lv 6

YES

The amount of man made water is too small to alter the amount of water on earth. Because of that reason, it is an accepted fact that the earth's water is a constant.

Yes, we can make water as others have mentioned but the amount is miniscule. The amount of water that exists today, existed billions of years ago as well. It may be in different states at different times but the amount is constant.

" ... the Earth has the same amount of water today as it did a million years ago."

http://www.ec.gc.ca/Water/en/info/pubs/NSKit/e_cha...

" Since the hydrological cycle is a closed system, the amount of water in the Earth's hydrosphere is constant."

http://encyclopedia.farlex.com/Properties+of+water

"... that the amount of water on the earth is constant ..."

http://www.visionlearning.com/library/module_viewe...

"...the amount of water on the earth is constant..."

http://www.prairie.org/water-constant

"Although the balance of water on Earth remains fairly constant over time ... "

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

"Although water continuously changes states from solid to liquid to gas the amount of water on Earth remains constant."

http://www.raingardennetwork.com/water.htm

"... water on the earth is virtually constant through time ..."

• 3 years ago

Amount Of Water On Earth

• Holly
Lv 4
4 years ago

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• 4 years ago

RE:

Is the total water on Earth a fixed amount?

I was watching a TV show this weekend about water conservation. The journalist who prepared the story stated the total amount of all water in the world is fixed. We can&#39;t make new water. Is this true?

Source(s): total water earth fixed amount: https://shortly.im/cEFlK
• 1 decade ago

No, this is not totally accurate. We do have the technology to break down the molecules of anything, whether it be a desk or a car, into a new substance. All we have to do is rearrange the electrons in any element to transform it into a completely different element, such as water. However, to do this is very expensive, and would not be worth the cost at all. I believe it costs in the billions, if not the trillions of dollars to do something like that.

The other thing is that the total amount of water on Earth can be altered by meteorites that make it to Earth. If they contain water, then they add to the total water on our planet. The same goes for any elements and compounds that can be deposited on Earth by meteorites.

• Mary
Lv 4
4 years ago

First, depending on the launch date, the cruise to Mars is only 8 months or so. That said, the water you drink today is recycled over an over again. The same holds true for astronauts. Water they consume will pass as urine which can be filtered and reused to say water plants, which would grow and the water seeps through the soil to be captured, to be reused as drinking water after filtering, and the cycle continues. So you don't need 3285 gallons per astronaut just for the voyage.

• 1 decade ago

It's close to being practically true. It is possible to make new water, by burning things like wood, animal dung, and oil. Part of the residue from the burning is water vapor. But world-wide, the process is an insignificant fraction of the of all the water in the air, in lakes and rivers, in the Antarctic and Greenland ice flows, and in the oceans.

By "insignificant" here, I mean less than 1 millionth.

• 1 decade ago

No, it's not true. Because we can react hydrogen with oxygen to produce water (and not all hydrogen is extracted from water, so we didn't have to "consume water to get water"). The simplest example of this is if you burn hydrogen, it produces water vapor because of the reaction with oxygen.