ice machine
Seasonal ice (Seasonal permafrost)
permafrost
The thick layer of ice and snow that forms a permanent crust over Alaska and Antarctica is called an ice sheet. Ice sheets are massive expanses of glacier ice that cover large areas of land.
its not always there
Approximately 68.7% of Earth's freshwater is stored in polar ice caps, glaciers, and permanent snow. This accounts for about 1.7% of the total water on the planet, as the majority of Earth's water (about 97.5%) is saltwater found in oceans. The remaining freshwater is primarily found in lakes, rivers, and underground aquifers.
Antarctica's ice sheet holds about 90% of the earth's store of permanent ice.
The first permanent ice bar is located in Jukkasjärvi, Sweden. It is called the ICEHOTEL and is made entirely of ice and snow, including the bar itself.
The summit of Mount Kilimanjaro
Places such as most of Antarctica are covered with a permanent layer of ice. In other places, ice only forms when the temperature drops below freezing. The ice formed when this happens in non-permanent ice because it is only temporary.
Swampy's Underground Adventures - 2012 On Ice 1-9 was released on: USA: 27 December 2012
No, phase changes in matter are not permanent. They can be reversed by providing or removing energy (such as heat) to the substance. For example, ice can melt into water when heat is applied, and the water can freeze back into ice when it is cooled.
Water below the surface is called groundwater. It is found in aquifers underground and is an important source of drinking water and irrigation for agriculture.