A glacier is on land, moving down-slope like a frozen river.
When it meets the sea, it breaks off in pieces, "calving" icebergs, which float in the ocean.
A glacier is older than an iceberg, because an iceberg is a piece of ice that fell off a glacier.
a glacier is huge ice mountain in the arctic ocean.An iceberg is a chunk of ice that falls off the glacier into the ocean.
glacier
An ice that breaks off a glacier and floats away is called an iceberg.
An iceberg
Iceberg or an ice sheet
pressure is put on a glacier and causes a chunk of ice to float of on its own. This is a iceberg.
The end of the glacier where melting occurs.
Iceberg.
An iceberg
A large detached piece of a glacier is called an iceberg. The process by which this happens is called calving.There isn't really a term for a detached piece of an iceberg. See related question.
the iceberg that sunk Titanic may have been spawned from the Jakobshavn Glacier (western Greenland).