Definitely heat, or salt
The process when snow or ice changes to water is called melting.
The salt does not alter the temperature of the snow, but gets into the structure of the ice crystals, causing the water (ice remember is frozen water and snow is ice) to have a lower freezing point.
Snow turns into ice through a process called compaction and melting. Over time, as layers of snow accumulate on the ground, the weight of the snow above compresses the snow underneath, squeezing out the air pockets and transforming the snow crystals into denser ice. When temperatures fluctuate, the snow can partially melt and refreeze, further contributing to the transformation into ice.
Putting salt on ice or snow decreases the melting point of water, a process known as freezing point depression. When salt is added, it disrupts the formation of ice crystals, causing the ice to melt at lower temperatures. This is why salt is commonly used to de-ice roads and walkways in winter.
A melting glacier gets smaller, but a growing glacier gets bigger.
The process when snow or ice changes to water is called melting.
When snow or ice melts into water, it is called "melting." This process occurs when the temperature rises above freezing point, causing the solid ice or snow to transform into liquid water.
Rivers that have started in high mountains from melting ice and snow.
Salt is commonly used to lower the melting point of snow or ice. When salt is applied, it disrupts the hydrogen bonds between water molecules, reducing the freezing point and causing the ice to melt even in subzero temperatures.
A glacier is formed through the accumulation of snow that compresses into ice over time. As more snow falls and compacts, it displaces air and forms glacial ice. This process is aided by the weight of the overlying snow, which causes the lower layers to compress and recrystallize into ice.
Snow primarily changes into ice be melting and refreezing. In glaciers, snow is crushed and recrystallizes under pressure.
Water formed by melting snow and ice is called meltwater. It can flow into rivers, lakes, and oceans, contributing to the water cycle and supporting ecosystems.
abrasion
Ice, Ice Cream, Crayons, Popsicle, Snow, etc.
Sand isn't used for melting snow. Sand is used for traction.
Global warming accelerates the melting of snow and ice by increasing temperatures, which leads to the melting of glaciers and ice caps. This is primarily caused by the release of greenhouse gases, such as carbon dioxide, into the atmosphere from human activities like burning fossil fuels.
A glacier.