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How to make a mini iceberg
Icebergs are large pieces of ice that break off from ice floes and glaciers . You can only see the tip of an iceberg because the rest is hidden underwater . Observe this phenomenon yourself by creating a miniature iceberg at home . Simple follow these seven steps .
1 . Fill a recyclable plastic cup with tap water 2 . Add a few drops of blue food dye 3 . Put the cup in the freezer for about four hours or until the water is completely frozen 4 . In the meantime , fill a large container , like a salad bowl , with warm water 5 . Take the plastic cup out of the freezer and remove the ice 6 . Place the miniature iceberg in the container of water 7 . Watch what happens
Explanation
The iceberg floats because of a phenomenon called buoyancy . When an object is immersed in water , it tends to rise to the surface . Since ice is less dense than water , the iceberg floats near the surface , while 90 percent of its volume hides below the waterline .
If you want , you can repeat this experiment using another color for the iceberg . n
Did you know ? Real icebergs , like those in Alaska , are over 10,000 years old .
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