Icebergs.
The icebergs that break off do so because the glacier of which they are a part flows toward the sea, like a river, only much slower.
When a fracture or a vulnerable sheer exists in the glacier, and the glacier tongue drifts far enough into open water, and the sea currents or waves exert enough pressure on the tongue, the tongue splits off from the glacier and becomes an iceberg.
an ice sheet
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.
The Arctic Ocean is located at the North Pole. Also a huge ice sheet.
Huge ice blankets are called ice sheets. These are large expanses of glacial ice covering more than 50,000 square kilometers of land. The two largest ice sheets on Earth are the Antarctic Ice Sheet and the Greenland Ice Sheet.
There are glaciers in the Arctic, but the North Pole itself is not glaciated. This is because, by their very definition, glaciers are regions of fresh water ice on land, and quite different to sea ice. The North Pole itself does not lie on any land mass, but on a floating ice sheet known as the Greenland or Arctic ice sheet - therefore, there can be no glaciers on the North Pole.
a sheet of ice is called a glacier
An ice sheet is a large mass of glacial ice that covers land, while an iceberg is a large floating mass of ice that has broken off from a glacier or ice shelf and is floating in the ocean. Ice sheets are stationary, while icebergs can drift with ocean currents.
an ice sheet
In Canada, at least, the sheet of ice is simply referred to as a rink.
The ice covering 98% of the Antarctic continent is called an ice sheet.
The North Pole sits on a floating ice sheet which is called the Arctic ice sheet.
All of the ice that covers 98% of the Antarctic continent is called an ice sheet. Several glaciers are named, and the ice sheet is named the Antarctic Ice Sheet.
A Glacier an ice sheet an ice cap
The process of ice breaking off a glacier or ice sheet is called "calving".
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.
The waters of the Southern Ocean freeze around the Antarctic shores during the extreme cold and sunless winter. As opposed to the permanent ice, glaciers, and ice shelves, this sea ice extends for miles into the ocean, covering an ocean area about twice the size of the Antarctic continent (14 million km2). This ice melts again during the summer. The continent itself does not change in size, but the ice sheet that covers 98% of the continent merges with the frozen sea ice, essentially doubling the size of the ice sheet.
They create a white sheet of ice across the ocean ( as Far as it can without being melted by the sun