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Water has the highest density at 4 degrees celcius.
So when there is ice at the top, the temperature increases to the bottom.
Only when all the water is cooled off, it freezes.
If water behaved like most other materials, it whould just get heavier as the temperature decreases, and lakes would freeze from the bottom.
Without circulation, they might never thaw in the summer.
What else can I help you with?
What would be the effect if ice were denser than water?
Since the density of ice is less than the density of water, bodies of water freeze from the top to the bottom. This actually provides insulation to the water under the ice, preventing all the water from freezing. This allows life to continue under the ice, provided there is sufficient nutrients. If the density of ice was greater than the density of water, bodies of water would freeze from the bottom to the top, providing no insulation, and allowing all the water to freeze. This environment is not suitable for many life forms.
What would melt faster a normal ice cube or a sea water ice cube?
A sea water ice cube would melt faster than a normal ice cube because sea water has a lower freezing point due to the presence of salt. This means that it would require less heat energy to melt the sea water ice cube compared to a normal ice cube.
What is the water availability in Antarctica?
Water is abundant by melting glacial ice or by desalinating sea water.
What changes would happen if ice melts?
if the ice caps where to melt it would result in a rise in sea level. Coastal areas like Bangladesh would eventually become submerged in sea water.
Why do ponds often freeze in winter but the sea rarely freezes?
When it snows the ice only freezes the top leaving the bottom still water and when you crack that ice the water is still there and the fishes in the sea are still alive. :) i hoped you have learnt
What are two major ways that an ocean can become saltier?
Evaporation: When water evaporates from the ocean's surface, it leaves behind salts, increasing the overall salinity of the water. Formation of sea ice: When sea ice forms, the salt in the water is excluded, leading to the surrounding water becoming saltier.
Why would melting the Arctic ice cap not cause a rise in sea level on its own?
If you put an ice cube in a glass of water the water level will rise because the cube displaces the water. Now if you check the water level after the cube melts, it will be the same. So ocean levels will not change if floating chunks of ice melt. However, If the ice is on land and melts and the water runs into the ocean, that will increase the water level.
What would happen to a river if a lot of snow did not melt?
The water would freeze, ice would SINK to the bottom. More water would freeze and ice would sink to the bottom again. Eventually the entire lake, river, stream, sea and ocean would be solid ice. All (or virtually all) life would cease in the waters.
What 2 water forms in Antarctica?
Any water in Antarctica forms into ice, either sea ice or fresh-water ice.
Why is ice so important to sea levels?
Land ice is very important to sea levels, because when it melts, all the water that was on land moves into the oceans. Sea ice melting will not raise sea levels, because it is already in the water.
Why is sea ice melt does not contribute directly to sea level?
Sea ice is already in the water, so melting it doesn't affect sea levels.
What are 3 examples of water?
ice, sea water, steam, fresh water
