How icebergs form
An iceberg is a very large mass of ice that floats in the sea.90% of icebergs are under the water. Examples of icebergs are a dome pinnacle wedge a dome is a iceberg with a round top a pinnacle is a iceberg wit one or more spires on.An iceberg can be bits of ice that have been broken off of glaciers or the water can freeze salt water starts to freeze at -1.8c(28.8f) and fresh water freezes at (32f).
Glaciers are formed when snow accumulates over time and turns into ice and it begins to flow outward and downward under the pressure of its weight The upper parts of glaciers generally accumulate more snow than they lose from melting.
Sea calving is when chunks of ice break the terminus or end of a glacier and they break off because the forward motion of the glacier makes the terminus become unstable.
The typical diameter of an iceberg is 300–500 metres or 1,000–1,600 feet. The types of icebergs are tabular or non-tabular; tabular icebergs have steep sides and a flat top non-tabular icebergs have different shapes with domes and spires.
The cold surface of icebergs cools the air around it and causes the water vapor present in the warmer air to condense into tiny droplets when it comes in contact with cold air resulting in fog.