What factors influence ice coverage on the Great Lakes?

What impacts do you think ice on the Great Lakes might have on the surrounding area? Ice actually has a considerable impact. Shipping is shut down for a part of the year. Fish spawning can be impacted. Shoreline structures can be damaged. Even the climate itself is impacted by the ice coverage.


  • Develop a hypothesis identifying the major factors involved in ice coverage of the Great Lakes.
  • Design an investigation of relationships in the Earth System.
  • Evaluate your hypothesis and suggest other investigations related to it.

External Curriculum Materials


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