This substance may appear in alternating light and dark bands called ogives, based on motion over the year.
This substance may appear in alternating light and dark bands called ogives, based on motion over the year. The ablation of this substance may be abrupt, as in calving events, or may be gradual, as in sublimation or other erosion processes. This substance has a density of roughly (*) 0.9 grams per cubic centimeter, slightly less than in its liquid form. For ten points, name this solid substance that makes up bergs that float in the ocean, as well as glaciers.
This substance may appear in alternating light and dark bands called ogives, based on motion over the year.
ice (accept glacier or iceberg before they are read)