This lesson plan is part of the DiscoverySchool.com lesson plan library for grades 6-8. It focuses on icebergs and water salinity, as well as the environment of the continent of Antarctica. Students research this area and do an experiment demonstrating the relationship between water salinity and ice floating or sinking in the ocean. Included are objectives, materials, procedures, discussion questions, evaluation ideas, suggested readings, and vocabulary. There are videos available to order which complement this lesson, an audio-enhanced vocabulary list, and links to teaching tools for making custom quizzes, worksheets, puzzles and lesson plans.