Question 55 TV02 - Towing Vessels - Great Lakes and Inland

The Correct Answer is A. A **Bergy bit** is a medium-sized fragment of ice (larger than a growler, but smaller than a true iceberg) that has broken off an ice shelf or glacier. Since glaciers and ice shelves are land-based formations of freshwater ice, the bergy bit is, by definition, an example of ice of land origin. --- **Why the other options are incorrect:** B) **Shuga** refers to an accumulation of white, spongy lumps of ice a few centimeters across, formed from grease ice or slush. Shuga is a form of *sea ice*, originating from the freezing of seawater. C) **Spicule** (in the context of ice terminology) refers to thin, needle-like crystals of ice. These are typically formed rapidly when freezing happens and are associated with the initial formation of sea ice or frozen precipitation (like hoarfrost), but the term is not used to denote a substantial piece of ice broken off a glacier. It is not classified as land-origin ice in the same category as an iceberg or bergy bit. D) **Floe** is a flat, massive piece of sea ice 20 meters or more across. Floes are formed entirely from the freezing of seawater and are therefore of *sea origin*.