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Sea Ice
In this resource, students will discover that there are notable differences between sea ice and fresh-water ice, such as density. In on segment, students learn that the first sign of freezing on the sea is an oily appearance of the water caused by the formation of needle-like crystals. The site explains the relationship between growth and the rate at which heat flows from the water and that the ice pack can alter its shape and dimension due to the movement of winds, currents, thermal expansion, and contraction of the ice. Types of ice described here include new ice, nilas, young ice, first-year ice, and old ice while the forms of ice covered include pancake ice, brash ice, ice cake, floe, and fast ice. The site also explains the meteorological and oceanographic factors that control the amount and movement of ice.
Intended for grade levels:
  • Middle (6-8)
  • High (9-12)
  • College (13-14)
Type of resource:
  • Visual:
    • Illustration - scientific
  • Text:
    • Ref. material
Subject:
  • Cryology
  • Natural hazards
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Information on this site has been posted to be readily available for personal and public non-commercial use. Unless otherwise noted by the application of the copyright symbol, materials on this site may be reproduced, in part or in whole and by any means, without charge or further permission from Canadian Ice Service, Environment Canada. Users exercise due diligence in ensuring the accuracy of the materials reproduced, Environment Canada be identified as the source department, and the reproduction is not represented as an official version of the materials reproduced, nor as having been made in affiliation with or with the endorsement of the departmental organisation.
DLESE Catalog ID: DLESE-000-000-006-164
Educational standards:
  • National Science Education Standards (NSES):
    • 5-8:
      • Unifying concepts and processes:
        • Evidence, models, and explanation
      • D - Earth and space science:
        • Structure of the earth system
      • F - Science in personal / social perspectives:
        • Natural hazards
    • 9-12:
      • Unifying concepts and processes:
        • Evidence, models, and explanation
      • D - Earth and space science:
        • Energy in the earth system
      • F - Science in personal / social perspectives:
        • Natural and human-induced hazards
Resource contact / Creator / Publisher:
Publisher: Canadian Ice Service, Environment Canada