Questions tagged [ice]

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6
votes
1answer
54 views

What’s the intuition behind snowflake symmetry?

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 ...
2
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2answers
99 views

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 ...
0
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1answer
47 views

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 ...
0
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1answer
41 views

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 ...
-2
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1answer
37 views

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 ...
1
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2answers
68 views

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 ...
-1
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3answers
514 views

Is ice always at 0 degrees Celsius? Does the temperature of ice get below that? [closed]

A rather simple analogy/explanation would be appreciated.
0
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1answer
54 views

What would happen if all water on Earth froze instantaneously? [closed]

What will happen if all water on the surface of the Earth froze instantaneously? Let's take into consideration only the non-frozen part of the oceans, which comes close to all water on the surface. ...
65
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2answers
6k 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 ...
0
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4answers
74 views

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 ...
7
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1answer
48 views

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 ...
0
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0answers
16 views

Can you get currents under lake ice solely due to differences between surface ice covered in snow versus bare

I was asked a question as to can you get a vertical water current due to the temperature difference on a lake where one part is covered in deep snow and the other is bare ice. The question was asked ...
3
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1answer
42 views

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 ...
1
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0answers
25 views

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 ...
4
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1answer
60 views

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 ...
0
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0answers
28 views

How to conduct a stable equilibration of a ice 1h crystal structure in LAMMPS?

I am a beginner both in molecular dynamics and LAMMPS simulations and would appreciate some guidance in this matter. Geometry: I have built an Ice 1h structure using a Python builder code that ...
30
votes
1answer
429 views

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 ...
41
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8answers
7k views

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 ...
1
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1answer
69 views

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 ...
27
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5answers
6k views

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?
2
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0answers
40 views

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 ...
0
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0answers
17 views

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 ...
0
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0answers
36 views

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 ...
-2
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1answer
36 views

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?
2
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2answers
73 views

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 ...
0
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1answer
41 views

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 ...
1
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0answers
13 views

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 ...
4
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2answers
1k views

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 ...
4
votes
1answer
160 views

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 ...
1
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0answers
32 views

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 ...
1
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1answer
46 views

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 ...
1
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0answers
35 views

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 ...
0
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0answers
40 views

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 ...
2
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2answers
53 views

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, ...
-1
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1answer
35 views

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 ...
-5
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1answer
101 views

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". ...
0
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0answers
27 views

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 ...
1
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2answers
61 views

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 ...
3
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1answer
205 views

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 ...
0
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2answers
69 views

Melting ice under pressure

If we put a cube of metal on ice (ice with a certain thickness), under which conditions the cube will penetrate the ice? and how can we calculate the velocity of penetration?
0
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3answers
75 views

What gets warmer faster: icewater or just ice? [closed]

Revised Question (07/07/20 14:00 UTC) Working off of a suggestion by @GiorgioP: "Would it be fair to say that your question is about the difference of melting behavior of ice if surrounded by ...
0
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1answer
61 views

What will happen to a ice cube in space vacuum if you wrap it in aluminium?

What will happen to a ice cube in space vacuum if you wrap it in aluminium and make it orbit the sun like Earth?
10
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1answer
258 views

Why does this ice cube rotate when it melts on a flat platform?

I had incidentally noticed this. An ice cube that fell on the kitchen granite platform started to melt and as it melted it also started to rotate. I tried to stop it by touching it, but it starts to ...
7
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3answers
437 views

Why does an ice stupa not melt for 6 months?

https://www.youtube.com/watch?v=-1s0K_MKAgI&t=303s In this video at 3:55, Mr. Wangchuck explains that the ice stupa doesn't melt because it has less surface area for a given volume compared to ...
20
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1answer
1k views

Why isn't the surface of this frozen iced tea smooth?

Why is the surface of the iced tea in the pictures below so uneven? To give more details, today I tried (and failed) making iced tea. I placed a cup of hot water, after removing the tea bag, in my ...
1
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0answers
28 views

Model for ice sheet thickness [closed]

How should I proceed to find a formula $\lambda(t)$ for the thickness of and ice sheet in terms of The diference $T_{a}(t)-T_w(t)$ of the temperatures of air above the sheet and water below Thermal ...
0
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0answers
32 views

Why are the six prongs of a snowflake the same?

My understanding is that the variety in snowflakes is determined by pressure, temperature, and humidity. This is why the six prongs grow same way, because they are close enough that they are in the ...
0
votes
1answer
82 views

How does the melting ice cube in a glass of water doesn't change the water volume? [duplicate]

that's problably a very noob question, and answer that i found is: the water volume was always the same, what is kinda obivius, but doesn't seen enought to me. So I can't stop thinking, were did the ...
3
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4answers
96 views

If liquid water is constrained in vessel then the temperature is dropped below freezing will ice form?

If liquid water is constrained in vessel then the temperature is dropped below freezing what pressure would be measured assuming the vessel is unbreakable? Or put another way, will ice form if the ...
37
votes
2answers
6k views

Why does ice make such peculiar sounds? [duplicate]

I've come across a couple of videos where some interesting sounds are produced using ice. (Click on the images to see the video.) Here, they drop a block of ice into a deep crevice and as the block ...

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