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Questions tagged [water]

For questions that have to do with the liquid form of H2O.

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5
votes
1answer
104 views

Natural hot shower

Was there a geological era in which the rain on earth was harmless and with the same temperature of the water in a hot shower?
0
votes
1answer
180 views

What if the Earth's oceans are added to Mars? [closed]

Imagine if all the water of the Earth's Oceans were added instantaneously to the Martian surface. What wouldhappen in 10 mins? In 10 years? In 1000 years? In 1 billion years? Would life form?
5
votes
4answers
540 views

Water supply on an mountain fortress

I'm envisioning a city-fortress, existing on a plateau atop of a mountain in an island not very far from the coast. I'm trying to figure out how that fortress could have a constant fresh water supply. ...
4
votes
2answers
100 views

Is atmospheric composition based on water content?

More specifically, I've had some debates with a friend on how a planet with low oxygen would work. Of course, it's his IP so he insisted on low oxygen, and we're hand waving aspects of it. But for my ...
5
votes
2answers
519 views

Powerfish - how to use fish movements to power tech

Powerfish - on! I'm thinking about writing about a world where fish are used like lab rats, to power technologies. But I'm thinking about worldwide use. I placed my TV on my fish tank yesterday. The ...
87
votes
13answers
11k views

0g pool: can I keep a big ball of water in space?

I have a super luxury space hotel. It has artificial gravity in the living and shopping area and 0g in some parts of the recreational area. There is a 0g pool available for the guests. I want it to ...
5
votes
3answers
481 views

Could water be extracted/harvested from clouds? Consequences?

I'm a newbie here and I'm slowly building a story based on Ancient Egyptian mythos that revolves around a primarily solar powered city in a vast desert. There will be magic and Gods involved, but I'd ...
-1
votes
2answers
128 views

What landmarks would still be visible after a worldwide flood?

So I'm making a game about a world which is now almost entirely covered in water, and the only ones who survived are those who could find places or things like boats, rafts, or planes sticking out of ...
1
vote
2answers
159 views

Possible: Canal town (e.g. Venice) in a River Valley?

I'm imagining a town in a river valley. The river runs straight through the town and is diverted or spread out into canals that form a grid in the central, low-lying part of the town. Technology is ...
-6
votes
2answers
2k views

Lake Makgadikgadi, 21st Century [closed]

First thing first, to get this out of the way, there are two potential sources of the faraway rivers in this scenario: Lakes Chad and Congo, the result of 30 million years of tropical heat, heavy ...
3
votes
4answers
930 views

How to let water destroy a block of steel? [closed]

I would like to find out what methods can be used to let water either crush or an equivalent word to turn a steel block into smithereens[obviously not by corrosion] but if it's not possible carve a ...
8
votes
6answers
1k views

can a water cycle exist on a planet without oceans?

So there's a planet that is used as a farming world (food) for its system. This planet has a single, Mediterranean sea-sized ocean on it and lacks any other major surface oceans (he hasn't excluded ...
0
votes
1answer
150 views

Would towing icebergs to drought stricken countries be feasible? [closed]

It seems a simple solution to the world's water problems if it were feasible. What Would be entailed for such a monumental task, if say, the iceberg was 100 tons, and traveling from Greenland to the ...
19
votes
7answers
4k views

What's the quickest way to add oceans to a planet?

After writing this question about the ecology of a terraformed planet, I realized that I hadn't quite tied up all the loose ends of the terraforming process itself. I intended for a group of aliens ...
4
votes
1answer
264 views

Breathing underwater

A few years ago, an isolated tribe was found in the middle of South America. They seemed to be a normal tribe, but near their village is a lake with a special property- you can breath underwater ...
6
votes
3answers
490 views

Could humans survive on a planet with only deuterium 'heavy water' made with hydrogen isotopes?

If all the fresh water were at least 25% deuterium, would humans be able to survive? Would there be significant other detrimental side effects to human physiology as a result?
2
votes
5answers
839 views

All fresh water is frozen

If all, or most, fresh water was frozen due to temperature drop over the space of a few generations, what would be the effects on living organisms such as humans and animals? Take in to consideration ...
10
votes
3answers
720 views

If Earth Were Forged by Fire and Ice

Our Earth first came into existence 4,543,000,000 years ago as an inhospitable ball of molten rock that barely survived a crash from a Mars-sized rogue planet whose impact gave rise to the creation of ...
11
votes
1answer
323 views

Would it be possible for a large inland area to have a groundwater system with cenotes, rather than rivers?

I want to create an inland forest on the western side of a large continent that features cenotes instead of rivers. Is this possible, and if so, how can I make it work? Any requirements for altitude ...
0
votes
2answers
180 views

Ocean-Based Travel When Space Travel Has Been Achieved [duplicate]

In a world where interstellar travel is just beginning, and is expensive, does such technology make ocean-based travel obsolete? Does the ability to use air/space flight around the world make water ...
4
votes
5answers
2k views

How useful would a electricity-over-water gun be?

As water guns today can send a jet of water quite a distance away, I wonder how useful would a gun be, that sends an electric current over a jet of water to its target? By useful I mean: Gotta be ...
5
votes
1answer
328 views

Tidal lock on a water moon

Tidally locking a rock or metal moon isn't too hard and the understanding of how a solid moon behaves while tidally locked is relatively well understood. However, can a water moon be tidally locked or ...
6
votes
4answers
455 views

Is waterwalking possible?

I am working on a world situated on the Earth. There is normal gravity, normal conditions of living - normal everything, except the human population itself. The situation: Humanity as a species ...
3
votes
1answer
207 views

Human population vs. rising ocean levels

Because the Earth is a (effectively) closed system and matter can neither be created nor destroyed, only moved or transformed, a wild theory was proposed that increasing the human population could be ...
8
votes
6answers
626 views

How to bring water and heat to an isolated and poor mountain village with extremely low costs?

The village background: It is located at an elevation of 2,119 m (about 6,952 feet) above sea level with a population of about 1,800. It has a continental climate with Oceanic influence. Summers are ...
6
votes
2answers
275 views

Can I get some help with the calculations of my mountain?

Two days ago, I asked a question how to stop a waterfall. I got great replies, and had to reconsider some of my numbers. Now I came up with this calculations, and I would like to check 'm with all the ...
20
votes
9answers
5k views

How to stop a waterfall

My world - think 13th century medieval Europe - has a gigantic waterfall. Imagine Niagara Falls but even bigger, consuming multiple sides of a big mountain. People don't climb the mountain, as it is ...
4
votes
3answers
439 views

How rare is (clean, drinkable or useable) water in the solar system?

Another follow-Up to this question. If you exclude earth as source, which means you can use all other planets and all celestial bodies within neptunes orbit range. Just how hard it is to get your ...
-1
votes
1answer
176 views

Time to Live for Earth before depleting 99% of the water [closed]

I've read we are slowly losing water (due to sun rays separating water into hydrogen wich is blown away by sun wind), does there exist any estimate for how much time we could expect to live before we ...
3
votes
1answer
112 views

In the Depths of the Mediterranean [closed]

The average depth of the Mediterranean Sea is 1500 meters. If that average depth increases to 3767 meters, how greatly will it affect the entire region?
0
votes
1answer
71 views

Project Hide of Leviathan [closed]

Set in distant future, alright let's jump right to the question... Is it possible to apply nanotechnology to manipulate water molecules to squirt super hot streams of highly pressurized jet of water ...
2
votes
1answer
177 views

Water percentage

All the worlds I've seen built by me or others have surfaces that are mainly water. Is it possible for a habitable world to exist if the world is mainly land? I'm only talking about 55-65 percent land....
4
votes
2answers
473 views

Could an ocean planet reflect its watery textures onto earth?

Let's say there's an OCEAN planet smaller than Earth but larger than the Moon. The Sun lights on the ocean planet reflecting the water textures onto Earth. Would it be possible to see watery ...
1
vote
1answer
203 views

A Much Stronger Current in the Ocean [closed]

Some time ago, I asked about the climatic consequences of a 30-hour rotation. One of the results I got was that the ocean currents would get stronger, melting the ice off the poles. But is that all ...
3
votes
4answers
303 views

Bringing water and heat to an isolated mountain village

This is a followup to this question. I have a mining village high in the mountains. It is accessible by road throughout most of the year, and is supplied that way. A few months of the year it is ...
20
votes
11answers
1k views

How can I move a magical water-producing artifact?

An adventurer (named Moses, for humor's sake) finds a clear pool of water deep in a cave. Upon taking a swim, he finds at the bottom of the pool is a mystical stone that eternally puts out water, ...
1
vote
3answers
235 views

Cordoning Corrosive Ocean

Imagine the entire ocean becomes extremely corrosive due to ocean acidification over a couple of decades, all nations have agreed to erect a permanent barrier along all shorelines to seperate land and ...
-1
votes
1answer
214 views

Why are there continents and oceans and where is Earth heading? [closed]

In an ideal world, gravity would have been a equalising influence, all water would have engulfed/flooded all terrestrial/dry land and would have been equally spread across all of the planet and the ...
-3
votes
5answers
739 views

Aliens want our water [closed]

Aliens, for some unknown reason, want all the water (H2O) in our oceans, seas, lakes, rivers, (all large bodies of water on earth), and plan to steal it from us overnight. Luckily for us, they don't ...
26
votes
19answers
8k views

Projectile weaponization of water

Is it possible to weaponize common tap water in some sort of gun? Imagine a basic water gun. It doesn't do much damage at all. But what if we could fire the water out in controlled spurts, at high ...
5
votes
5answers
67k views

Breaking surface tension of water to survive high fall [closed]

I'm writing a sci-fi story where a character has to jump off the top of a 140m (459ft) tall building, and fall into the sea. I think it's pretty obvious that no one could survive such a fall, so my ...
3
votes
7answers
2k views

Lighting circuit without metal

I'm planning to incarcerate a supervillain who has the ability to attract and control metal. As a minimum, I'd quite like to light his cell but obviously putting even small amounts of metal into his ...
5
votes
3answers
704 views

Surface temperature of a icy rogue planet

A certain imaginary stellar system had once a water world. But instead of evaporating away under the stellar wind, this lucky (or unlucky?) water world (made of only water and a gaseous atmosphere) ...
7
votes
4answers
2k views

Is it possible to use Venus' temperature to generate electricity, and how would the electricity be transferred to Earth?

Assumptions: We have materials that can withstand the temperatures/pressures/acidity of Venus. We can get to Venus and back reasonably easily (NASA does shuttles every 3 months). Here is Venus: ...
22
votes
11answers
3k views

How would a town powered mainly by water work?

I have a town that I'm designing (in a D&D campaign, think Neverwinter in terms of technology) that I want to be a town on a river/lake/ocean/whatever. I would like for this town to be unique from ...
26
votes
5answers
41k views

How would the world be different if ice was denser than water?

Ice is strange, in that the solid form is less dense than the liquid water it freezes from. This causes Ice to float on top of the water. How would our planet earth be different if something changed ...
12
votes
5answers
3k views

What effect could drop the freezing temperature of water globally to −40 Celsius?

This question comes up from Is there a man-made or natural event that can cause an abrupt climate change within hours/a day? – trying to get KaguraRap a functional answer to an abrupt temperature drop ...
24
votes
8answers
2k views

How could a generation ship maintain a source of potable water?

A generation spaceship (a spaceship designed for multiple generations of humans to live in) could sail through the galaxy for hundreds of years before finding another planet, let alone a planet with ...