An iceberg is ice that breaks off of glaciers or ice flats and floats into a lake or ocean. To be classified as an iceberg, it must have a height of 16 feet or more above sea level. Icebergs can be many different shapes and sizes. The Northern Atlantic and other cold waters are where you can find most icebergs.
Smaller icebergs may be called “bergy bits” or “growlers.” Small icebergs are very dangerous for ships because they are difficult to see. After the Titanic sank, 14 countries agreed to form an international ice patrol to warn ships of dangerous icebergs in the Northern Atlantic.
Scientists use icebergs to learn about climate change and how it is affecting the wildlife. They can do this by collecting ice cores. Then they compare ice cores from all around the world to test how climate change affects different regions.