Questions tagged [ice]

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If ice melting does not change the water level in a container - Why is everyone afraid of sea levels rising drasticing from ice sheets [duplicate]

I saw this experiment and am now wonder what I am missing in understanding if ice sheets melt why should they causing the sea levels to rise if it doesn't in a container ?
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Why don't substances other than water ice show regelation?

We know that ice shows regelation,but why don't other substances like iron rods or wood show the same phenomenon? Is there something special about ice?
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-1 votes
1 answer
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What is the adiabatic temperature gradient of ice?

What is the adiabatic temperature gradient of ice at Earth's surface conditions? The adiabatic temperature gradient is a non-conductive spatial temperature difference caused by acceleration on thermal ...
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Pressure of a vacuum left by melted ice

Let's assume we have a completely sealed uncompressible container filled with ice (without no air gap between the ice and the cap). At room temperature, when ice melts in water, as the density of ...
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0 votes
1 answer
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How do you know when to use specific heat for ice or water? [closed]

A copper calorimeter can with mass $\rm 0.100 \ kg$ contains $\rm 0.160 \ kg$ of water and $\rm 0.0180 \ kg$ of ice in thermal equilibrium at atmospheric pressure. If $\rm 0.750 \ kg$ of lead at $\rm ...
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2 answers
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I'm really confused on the formula $Q=mL$ on phase change

"A 6.00 kg piece of solid copper metal at an initial temperature T is placed with 2.00 kg of ice that is initially at -20.0°C. The ice is in an insulated container of negligible mass and no heat ...
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2 votes
0 answers
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Force field lines in surface ice

The question Melting ice pattern shows a single hole melted in ice. The picture below shows multiple holes of the type described in that question, and there are lines in the ice between the melted ...
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2 answers
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How can this dimensional analysis of cooling rate account for a fixed ice cube volume

This Wikipedia article describes an analysis of the dependence of the cooling rate of an ice cube in water on the cube edge length, $L$. It claims that Buckingham's $\pi$ theorem predicts a cooling ...
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34 votes
3 answers
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How does a river freeze when the water keeps moving?

It's cold outside right now, and the biggest river in the country has frozen over. We're talking about a minimum of 500m in width, and I've no idea how deep (but some pretty big ships can sail there). ...
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1 answer
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Does liquid water remain at thermal equilibrium with ice at the melting point of ice?

Suppose, I have a glass of water. Now, I begin cooling it until it reaches $0^{\circ}\rm C$. Just after it reaches $0^{\circ}\rm C$, I stop cooling it. Again suppose I have an ice cube. Now I begin ...
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0 votes
1 answer
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What is the resonant frequency of ice? How could you calculate the resonant frequency of ice for a cylinder of ice? [closed]

Can vibrating frequencies break apart the structure of ice? Or could electromagnetic frequencies do the same?
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1 vote
3 answers
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Why will the water not overflow when ice melts?

This is an old question but still there's something I could not understand. Here it goes: A glass of water has an ice cube floating in it.The water level just touches the rim of the glass. will the ...
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14 votes
1 answer
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Why do my "steel ice cubes" have water in them?

I recently bought steel ice cubes. A better name is probably "steel cubes with unidentified liquid" which I presume is water. When I opened the package I was quite surprised that they ...
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2 answers
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Why is my watter bottle wet after the water inside it unfreezes?

I have a filled, warm, and dry (on the outside) water bottle that I put in the freezer. The next day I come and take the water bottle out of the freezer and towel dry the ice gathered around the ...
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6 votes
1 answer
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What’s the intuition behind snowflake symmetry? [duplicate]

What’s a more rigorous description of why snowflakes are so symmetric? The general explanations of why they’re symmetrical are: Theyre not. The branches actually vary. Snowflakes are somewhat ...
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2 votes
2 answers
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Why do icebergs flip over?

Why do icebergs flip over? Are certain shapes of icebergs more "stable" than others, in that it's harder to flip them over? If so, why? For example, it somehow makes intuitive sense, that a ...
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0 votes
1 answer
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How could you make realistic Frostwalker boots? [closed]

In Minecraft, as you might know, you can enchant boots with Frostwalker, which freezes water as you walk over it. I've been wondering if this would be possible in real life, and if so, how? My idea is ...
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Is supercooling water reversible?

Water can exist in a supercooled state. Even at $-48,3$ degrees Celsius it can be liquid. Below that temperature, the water will freeze. If I cool the ice to, say, $-60$ degrees and heat it slowly ...
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-2 votes
1 answer
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Can ice patterns form on the top of deep water?

Here is a picture of a pattern in ice: There are feathers, or flowers to be seen. The ice has grown on a solid underground. Water condenses on the solid underground and freezes. I have never seen ...
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2 answers
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Time required for the formation of ice of some thickness in a lake

The air above a large lake is at –2°C, while the water of the lake is at 0°C. Assuming that only thermal conduction is important and using relevant data selected from the given below find how many ...
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-1 votes
3 answers
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Is ice always at 0 degrees Celsius? Does the temperature of ice get below that? [closed]

A rather simple analogy/explanation would be appreciated.
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66 votes
2 answers
7k views

Why was water freezing almost instantaneously when shaking a bottle that spent the night outside during a frosty night?

Due to the forecasted frost last night, I placed yesterday evening, some 1.5l standard PET bottles filled up to 90% with warm tap water(+60°C) close to some vegetables that I wanted to protect in my ...
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4 answers
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Can water in solid state (ice) be at such a low temperature that in contact with liquid water at 0, freezes it and leaves it at a lower than zero C°?

I recently had a discussion with a bio engineer and we are both pretty convinced of different outcomes for the same situation: Say you have a glass half full of liquid water at 0°, could you get a ...
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7 votes
1 answer
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How can such a mushroom ice shape grow from a water fountain?

Recently I stumbled upon a funny picture of a frozen water fountain. The frozen fountain resembles a mushroom: Source: https://izismile.com/2021/02/19/this_is_extremely_rare_50_pics.html The longer I ...
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3 votes
1 answer
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Why does ice fragment vertically?

The pool in my back yard froze over, and now that it's warmer it is starting to break up. But I notice that the ice is marred by fractures, and that they all seem to be completely vertical. Handling ...
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1 vote
0 answers
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Physics of ice around: Breaking the Ice

I was removing ice on my driveway and had a very hard time. And I am wondering what are the factors that determines the hardness of ice, and also the stickiness. one thing that I noticed about the ...
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4 votes
1 answer
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What are these geometric patterns on ice?

In a winter day, I noticed the water frozen inside a canal in our building. As you see there are very nice geometric patterns formed by the ice, with specific angles. What is the physical ...
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30 votes
1 answer
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Why are snowflakes flat?

There have been many questions and excellent answers in this community about the symmetry of snowflakes, e.g., here and here. There is however one aspect of snowflakes that does not seem clearly ...
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41 votes
8 answers
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Why do small patches of snow remain on the ground many days or weeks after all the other snow has melted?

I often notice small patches of snow that remain on the ground in seemingly random locations, many days or even weeks after all other snow in an area has melted, and even when temperatures have been ...
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1 vote
1 answer
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What quantity of freezing water could generate 300,000 joules of mechanical energy from expansion - enough to boil an electric kettle? [closed]

When water freezes, it expands with considerable force - enough to break glass and burst through copper water pipes. If this material expansion was harnessed - e.g. liquid water placed in a container ...
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27 votes
5 answers
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Why is the air inside an igloo warmer than its outside?

An igloo is not only used as shelter from snow but also to keep warm. Perhaps, a simple igloo is made of ice and nothing else still, why is its interior warmer than the exterior?
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2 votes
0 answers
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What mass of pure ice would be melted by 1kg of salt at a given temperature? [closed]

Salt melts ice by disrupting the molecular bonds of the lattice, producing salty water (brine). But brine has its own freezing point. If the brine gets too cold, it begins to form ice, and the ...
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Why doesn't ice in a glacier feel as cold when I touch it as the ice I get from my freezer?

When I was in Iceland, I went to a tour in a glacier and I remember the ice that was there. It looked and felt like a huge amorphous block of glass: hard, smooth, not wet, and not that cold. Not as ...
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How do these icicles seem to defy gravity and form in my ice cube tray in my freezer? [duplicate]

I've been seeing this effect in this particular freezer since we purchased it a couple of years ago and I finally want to know the answer. In the picture below you can see that certain ice cubes will ...
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-2 votes
1 answer
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Would bobsleds go faster if the tracks were coated in butter?

Would bobsleds go faster if the ice tracks (and perhaps the bobsled blades as well) were first coated in butter?
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2 votes
2 answers
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Aftermath of melting ice [closed]

This is a familiar question but I have something different to ask . What will be the aftermath when ice melts what will happen to the interface of water and oil will it rise or fall what will happen ...
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0 votes
1 answer
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Why does ice gloat up to the top after staying at the bottom for a while in soda

I noticed this recently when I pour myself a glass of soda and I want to know why this is. When I pour in the soda sometimes the ice will stay at the bottom not floating up for a while even after it ...
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1 vote
0 answers
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What is the nature of the interference patterns inside the ice?

Recently saw some interesting optical effects inside/under the ice on the frozen pool which I never noticed before. Looks pretty much like thin-film interference patterns to me. A quick search did not ...
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4 votes
2 answers
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Does the density of ice increase further when it is further cooled?

As we know, water becomes ice at $0^°$C. After becoming ice, if we lower the temperature further ($<0^°$C), then does the density of ice increase further? If yes, in that case, does the volume ...
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4 votes
1 answer
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Does sugar have a quasi-liquid film on its surface at room temperature?

Background According to an article from Physics Today, ice is slippery because there is a “liquid or liquid-like layer” on its surface. There are 3 mechanisms that can cause this layer to exist, each ...
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1 vote
0 answers
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Symmetry of spherical ice crystals

Page no. 291 of Hidden Unity in Nature's Laws by John C. Taylor says the following - "Take a spherical water drop. No special direction is picked out by such a drop. If we rotate it nothing has ...
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1 vote
1 answer
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When pouring something on ice to make it melt at a lower temperature, does the energy required to melt it change?

When pouring something on ice, like deicing salt or vinegar, to make it melt at a lower temperature, does the energy required to melt it change (in a significant way)? Edit: I am only interested in ...
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1 vote
0 answers
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Is there a difference in speed of ice formation between a thick and thin water layer?

Here in the Netherlands we are always trying to get ice as soon as possible so that got me thinking. If you would build a thick layer of ice by spraying a layer of water and wait till its frozen, is ...
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0 votes
0 answers
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Melt ice faster?

I had a discussion with a friend who claimed that vinegar is useful when defrosting a freezer because it lowers water's melting/freezing point. I disagreed, because I believe that the freezing point ...
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2 votes
2 answers
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Does the visible part of an iceberg depend on size?

Most people heard that we only see some % of an iceberg above water (10% etc). I suspect the exact % depends on the iceberg's shape (e.g. flat disc vs very narrow cylinder). But, assuming a similar, ...
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-1 votes
1 answer
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Consider a cube of ice with volume equal to 3cm³ and a fixed density equal to 916g/cm3, How many of the molecules are in the surface of the cube? [closed]

This was a question that my fluid mechanics teacher ask today in class, I find the number of total molecules, and then my teacher says that we could search the size of one $\rm H_2O$ molecule, then I ...
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-4 votes
1 answer
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Does accelerating ice produce electromagnetic radiation?

There are at least two parts in this question. First one is does the interior of the ice produce radiation when it is accelerated? I guess it does not "because it is electrically neutral". ...
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Is there a frequency to which electromagnetic radiation would make an entire ice cube (or another material) vibrate?

Microwave oven radiation makes water molecules rotate. I just wonder if there is a wavelength, supposedly related to the lattice of water ice, molecules spacing, whatever, that would set the entire ...
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1 vote
2 answers
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Physics of an hypothetical animal attack (orca ramming through sea ice)

Question: Could an aquatic animal weighing 5,000 kg and traveling at 55 km/hr break through solid 11cm-thick ice? Context: I am writing a story and want the physics to be as accurate as possible. I'd ...
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3 votes
1 answer
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While freezing ice from salt water, does the salt dissolve in the ice or is it separated out?

I know that salt decreases the freezing point of water. We have freezing point (in Celsius), $\mathrm{T_f=-K_f\cdot m}$ (molality of salt). But, is it true that all of the solution doesn't freeze at ...
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