Questions tagged [water]

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

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17
votes
5answers
4k views

Getting fresh water in the middle of hypersaline lake in the Bronze Age

An ancient kingdom covers a several rivers in a desert basin all converging on a central, hypersaline, lake. Because of its central location, and the importance of the salt, the lake has important ...
3
votes
3answers
217 views

Is a confluence of more than two rivers plausible?

Two rivers converging into one is obviously extremely common, most often when one is clearly dominant over the other (whereby the lesser one is the 'tributary' of the greater) but also sometimes where ...
8
votes
15answers
4k views

How to supply water to a coastal desert town with no rain and no freshwater aquifers?

Think Tatooine in climate, but with oceans. Here are a few restrictions due to setting: There is modern technology, but not too much electricity ie no super high amperage machines. Population is ...
1
vote
5answers
316 views

Does a character being allergic to water (specifically the $H_2O$ molecule) make rational sense?

I'm writing a drama book and it's meant to be taken 100% seriously, and the main character was born with an allergy to $H_2O$. She does not have Aquagenic Urticaria, as that only affects the skin. She ...
18
votes
3answers
2k views

Closest Proximity of Oceans to Freshwater Springs

I am trying to wrap my head around the geography of a settlement in my world. The settlement is situated along the coast, along a river roughly 500m wide with temperate mixed forests surrounding it, ...
4
votes
1answer
138 views

What construction and physics implications would there be for life in an underwater “high rise building?” [closed]

I'm working on a project in which part of the story takes place on a planet that is mostly ocean. There is a small continent with some manufacturing and refinery structures, but the rest of the planet'...
8
votes
7answers
2k views

How much water is needed to create a Katana capable of cutting flesh, bones and wood?

I've created a character for my world that has the ability to manipulate water with her magic. She applied this ability by using it with a katana hilt. I will try to explain how she uses this ability ...
18
votes
3answers
4k views

Does water in vacuum form a solid shell or freeze solid?

I'm working on a sci-fi setting which includes an aquatic space-faring species. When a human space vessel is ruptured and depressurizes, the gas can escape rapidly and we immediately suffer from the ...
0
votes
4answers
175 views

How significantly would the course of rivers change over 10,000 years?

This one is rather straightforward. A character falls into a magically-induced coma for about 10,000 years and then wakes up to find the world around him different in quite a few ways. There's not a ...
48
votes
13answers
10k views

Pressure inside an infinite ocean?

Handwaving the origin of one such place, imagine a universe where every part of space is filled fully and evenly with liquid water (at, say 1 degree Celsius). What would be the experience of a solid ...
24
votes
8answers
4k views

How could a planet have most of its water in the atmosphere?

I am creating a speculative evolution project for school (and partially for leisure) and I need a planet for my organisms to live on. I have a rough idea of what it may be like but I'm no expert in ...
9
votes
3answers
324 views

Is 'Black' Whitewash Possible?

Question: Is it technically possible to make a 'Black' Whitewash? True Whitewash is a plaster-like substance that has been used to coat stone and wooden walls for cosmetic and waterproofing purposes ...
2
votes
5answers
233 views

Creating the perfect post-apocalyptic suburban town, part I: water source

I'm writing a story set in the immediate (and eventually distant) aftermath of the human race globally being given access to a runic magic system in the modern day. This... eventually goes very, very ...
11
votes
10answers
6k views

Is there enough fresh water in the world to eradicate the drinking water crisis?

Lets assume, by the means of some advanced scientific discovery, scientists find a way to teleport simple matter to any part of the world and use this process to teleport fresh water and/or small ...
6
votes
2answers
169 views

Electrical, Internet and phone connections on an isolated part of a world?

In the world I am creating, a chunk of the USA, specifically in Northern Oregon, is teleported to another world. The teleported section has all infrastructure intact, including power generation in the ...
5
votes
4answers
207 views

What would happen if the boiling point of a section of ocean was lowered to 5C?

Suppose, that in a particular area of the ocean on an earth-like planet, all water molecules are transmuted into an exotic variety of $H_2O$ that is identical to normal water in every way except with ...
11
votes
5answers
2k views

What could trigger powerful quakes on icy world?

Imagine a planet orbiting a star some billions of lightyears away from us, the planet is 4 times the mass of Earth and is covered with ice 100km thick on average. It is believed that liquid ocean ...
10
votes
2answers
1k views

Infrastructure damage from sudden thickening of water

Deep in a laboratory far under the megacity of Exampleville, a scientist is experimenting on a new compound found in an alternate, magical universe. He accidentally knocks over a vial of Handwavium, ...
6
votes
4answers
272 views

Water planet turns into desert world without being rendered uninhabitable

A habitable (human could survive in its atmosphere without suits) desert planet which used to have large oceans is quite common in ScFi. I was thinking about the processes which could have been ...
6
votes
5answers
316 views

Salty or fresh or brackish waters?

So this is a small map of all the continents on the small planet of Parsas Decem. As far as most of the rivers go, I’ve got it figured out. What I’m wondering is, can salt water flowing in from the ...
8
votes
5answers
3k views

How to get rid of human waste without using bodies of water

A particularly religious people living in a land filled with rivers need to get rid of their excreta. They have disfavoured sewers and dumping waste on water because they venerate oceans and rivers, ...
4
votes
4answers
815 views

Could a terrestrial planet have water for a core?

There’s a planet called eaglypt whose surface is 100% barren desert. However, there is a twist: the planet’s core consists of liquid water, and there are a few places where this water seeps through ...
6
votes
2answers
127 views

Maximum realistic salinity level with thriving aquatic environment?

I'm trying to create a planet which environment is not immediately lethal to humans, (reasonable oxygen level) however after closer inspection turns out not to be specially Earth-like. One issues is ...
4
votes
2answers
124 views

What water generating technology would be required to create a planetary scale flood?

Aqadatio is a planet which is completely flooded. This flood was generated by its own government to get out of debt (long story). The inhabitants of this planet are technologically advanced, more so ...
7
votes
4answers
674 views

How common is it for a river to enter a valley from a flatter plain?

before I get into my question I wanted to thank everyone for their input in my first thread about the general principles of river drawing. I have taken your comments under consideration and began ...
8
votes
4answers
312 views

I'm going to have to redraw most of my rivers - what do I need to know to make them true to life?

I'm new here but I've been a worldbuilder for the last decade or so. I'm pretty late to the 'mapping out your country' party and I've only been at it for about 8 months, but I'm starting to see some ...
1
vote
1answer
135 views

Genetic altering to make human lungs strong enough to process water [duplicate]

I am aware that human lungs can't process water due to other reasons, but I am working on a setting that has genetically altered humans of various degrees and one of them can breathe water and air. I ...
68
votes
24answers
16k views

What is the utilitarian purpose of artificial waterfalls?

In sci-fi and fantasy artwork, I often see a city built on top of or incorporating waterfalls: James Gurney's Dinotopia (above) is an egregious example with "waterfall towers". When the city is ...
1
vote
3answers
199 views

How do I build an ancient moisture vaporator?

Let us suppose a world that exists under a harsh red sun. The entire planet, which may once have been fertile, is, in its current state, covered with desert. The civilization living there, which may ...
0
votes
3answers
195 views

What amount of heat would be necessary to evaporate the oceans? Can his heat threshold be reached if there were no ozone layer? [closed]

The problem in my fictional future Earth was: almost the entire ozone layer disappeared due to a massive release of CFCs in the atmosphere. I was trying to calculate if this would lead to the oceans ...
2
votes
0answers
93 views

Why would somebody want to stop the four elements? [closed]

I'm writing a story about the four elements that are in four people. One controls water, one controls fire, and so on for air and earth. Why would the antagonist want to get rid of the four people/...
2
votes
9answers
1k views

Building my Flat Earth, how to make my Ice walls last for eternity [closed]

In a world where Earth does NOT have gravity (Gravity does not exist). Our oceans are created by Ice walls. Ice walls? How can they exist so long? In the Flat Earth model, the Ice walls are situated ...
7
votes
1answer
645 views

Massive tides and resources

Assuming a situation similar to this, where the moon causes slower but massive tides that slowly encircle the globe. Would the poles be constantly underwater or not underwater (like A or B below)?: ...
15
votes
9answers
3k views

Can a house cut off from the world still have water for a short time?

Related to this question a bit, the house I'm talking about was swallowed into another dimension along with parts of its garden. The house itself stays completely intact, but the piping is cut off, ...
3
votes
7answers
2k views

Is it hypothetically possible to create a giant levee that is a non-physical forcefield or electronic membrane?

What examples are there in science fiction of molecular shields that can cancel out or "eat" certain molecules--and are they plausible? Is it hypothetically possible to create a giant levee that is a ...
3
votes
2answers
257 views

World in drought - How long does it take for a forest to die without water?

In my world a powerful earthquake produces an opening in the tectonic plates and changes the geography of an entire continent. Most of the great rivers deviate from their courses or disappear, leaving ...
5
votes
1answer
112 views

Winterizing a Municipal Water System

I'm the last person in a large city. Everyone else has left and I don't know when they will be back, if ever. I'm planning on staying in the city as long as I can. I want to avoid, or minimize, a ...
3
votes
4answers
646 views

What purposes could a technological ruin with a half-mile sphere full of water have served? [closed]

There is a soft sci-fi RPG called Numenera, set on the Earth a billion years in the future, where multiple technologically-advanced civilizations have risen and fallen, and a new human civilization is ...
15
votes
9answers
6k views

Would it be possible to make a water mill without metal?

I'm making a human society that has a lack of metal ore and no knowledge of metalworking at all. However, industry must still continue, metal or not, so I'm thinking about a water mill made out of ...
27
votes
9answers
6k views

Sailing without wind, but with strong currents

Context On my world, there is a lot of water: sea, oceans, ... There are also firm land and islands, so it's interesting to travel on the water. The problem is that there is NO wind at all, and lots ...
6
votes
3answers
480 views

Can you have reduced visibility (due to fog) but an atmosphere that is still breathable?

Is it possible to have an atmosphere that is essentially fog, but still be breathable by humans? I'm basically looking to have an environment where visibility is very low (for suspense reasons) even ...
2
votes
3answers
354 views

Element Handling Justification: Water manipulation

I am roleplaying in a lore where elemental justification is really poor. However, loving a good and strong background, I would like to explain why my character is / would be able to manipulate ...
4
votes
3answers
137 views

A Worldwide Wave

What would have to happen for a giant tidal wave to wash its way around an entire planet? The planet can be like earth, with the same size, mass, and everything else. However the wave must start ...
-3
votes
2answers
102 views

What can cause the formation of a water canopy above the Earth's surface?

Here is a link to the water canopy theory. My question is: how this water could end up there, high above the surface? I was thinking about two possibilities: a comet spreading ice/water as it ...
6
votes
3answers
170 views

Deep Sea Habitat on a Low Gravity Planet

I read somewhere that the lowest depth for a sustainable underwater habitat is estimated to be three-hundred meters. Any lower and the pressure becomes too great for structures that are currently ...
-2
votes
2answers
304 views

Could a 2-litre milk carton be used to knock someone unconscious? [closed]

More specifically: could a 2-litre milk carton like the one pictured below be used to knock someone unconscious via a single blow to the head, or would the carton burst from the force? Here is some ...
25
votes
16answers
6k views

How to make sure humans do not know the meteorological phenomenon rainbow?

You've got to love the rainbow, it's an awesome sight. But I don't want humans to have the pleasure of seeing the rainbow. What change to the earth, atmosphere and so on, is needed so that humans ...
39
votes
30answers
15k views

A way of getting the water to the top of the tall building without electricity?

First, let me explain the situation. Post-apocalypse setting, a group of humans (let's say around a hundred of them) have to find safe places to live at, protected from animals, bandits, and other ...
-1
votes
1answer
107 views

Protect 18th century marines weapons & supplies in water

Sometimes to win a war or battle a nation must conduct amphibious operations and such, that require soldiers to enter water. Experiencing this, "X" nation decided to create a branch of marines/naval ...
-2
votes
1answer
62 views

What would cells with a higher water content do to amphibious humanoid organisms? [closed]

Jellyfish are 95% water, humans 70%, frogs about 80%. What would a cell water content of around 80% mean to a humanoid? It is the size of a human adult with a long tail and some external gills. ...