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JEE Main 2026 Preparation: Question Papers, Solutions, Mock Tests & Strategy Unacademy » JEE Study Material » Physics » Regelation

Regelation

In this article, we are going to understand the topic regelation, its examples etc

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Regelation is the process by which ice melts to the water below 0°C when pressure is applied and then refreezes back to ice when the pressure is released. It is a common event in the ice industry. It is in this post that we will go over it in detail and learn about the regelation of ice, instances of regelation of ice, technique and many other interesting topics in a thorough manner. Regelation is a demonstration of the concept of compressing ice and changing it into water under pressure and then when the pressure is released, the ice will solidify again. Because of regelation, the glaciers, for example, serve as a source of water for the river. The melting of glaciers occurs when the air temperature rises beyond the freezing point of water, allowing liquid water to flow from the glacier base to lower elevations under the right conditions. In a similar vein, the preparation of the ice ball is necessary.

Relegation of ice

Regelation is the process of generating meltwater from ice that has been subjected to higher pressures than normal. When the melting point of an ice mass is reduced by increased pressure, the ice begins to melt. For this phenomenon to be demonstrated, the melting of glacier ice would be the most appropriate example to use. The massive mass of glacier ice can exert enough pressure on its lower surface (the glacier base) to lower the melting point of its ice, allowing it to become more liquid. It is possible for the glacier to migrate from one elevation to another through melting at its base, which occurs during glacial advancement and retreat.

Regulation associated with the production of melt emerges from subglacial systems in the form of a thin layer of water on the ice surface. The primary function of the water film is to move water from high-pressure areas of the glacier bed to areas of regelation and back again (often described as low-pressure areas).

Examples of relegation 

Regelation can be found in glaciers. As a glacier grows in size, it exerts enough pressure on the ice at its base to lower the freezing point of the ice, melting it and allowing the glacier to glide over the liquid underneath. When the correct conditions are met, liquid water can flow from the glacier’s base. The water behind the glacier begins to refreeze.

The presentation of ice on a wire is yet another example of regelation in action. Place an ice cube in the middle of a fine wire and attach a heavyweight to the wire. The pressure that the wire applies to the ice causes it to melt, allowing the wire to travel through it without breaking. You can draw the wire through the ice cube while leaving the ice cube intact because the water refreezes behind the wire’s path as it passes through it. While regelation is taking place, a portion of the melting is caused by the heating of the wire under stress.

Ice skating works because the pressure exerted by the skater presses down on the skate blade, causing some of the ice to melt and become liquid water. The skate then glides across the water surface. The pressure required to melt the ice is insufficient when the temperature is too low; as a result, skating is not possible. Besides the process of regelation, there are a number of other elements that influence ice skating.

Conclusion

Regelation is a demonstration of the concept of compressing ice and changing it into water under pressure. Because of regelation, the glaciers, for example, serve as a source of water for the river. The melting of glacier ice occurs when the air temperature rises beyond the freezing point of water, allowing liquid water to flow from the glacier base to lower elevations.The presentation of ice on a wire is yet another example of regelation in action. Place an ice cube in the middle of a fine wire and attach a heavyweight to the ice cube. Regelation occurs when liquid water moves water from high-pressure areas of the glacier bed to areas of regelation and back again. While regelation is taking place, a portion of the melting is caused by the heating of the wire under stress.

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Frequently asked questions

Get answers to the most common queries related to the IIT JEE Examination Preparation.

Will compressed ice melt?

Ans: Packed ice is a totally solid block that can have any ob...Read full

What is Regelation?

Ans: When ice melts under pressure, it will refreeze when the...Read full

In what aspects of our daily lives do we see regelation?

Ans:  Among the many examples of regelation are the followin...Read full

Ans: Packed ice is a totally solid block that can have any object placed on top of it. Packed ice, unlike regular ice, does not melt when exposed to light. Because it can’t be made back into ice, packed ice isn’t a storage block.

Ans: When ice melts under pressure, it will refreeze when the pressure is reduced. This can be illustrated by wrapping a fine wire around a block of ice and then attaching a heavyweight to the end of the wire loop.

Ans:  Among the many examples of regelation are the following: Because of regelation, a glacier can serve as a river’s source. The glacier’s mass puts pressure on the lower surface, lowering the melting point of the ice at the glacier’s base as a result. This causes the ice to melt and the glacier to slide over the liquid, causing it to slide over the liquid.

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