Water Science for Schools - Excellent teaching resource from U.S.G.S on water, from basic properties to water quality, inventory of world water sources, how to measure streamflow, components of water use patterns, human impacts, offers a quiz in the interactive Activity Center. Site also available in Spanish, interactive diagram with details of water cycle is available in 50 languages. Provides map and data libraries on who uses water and what for purposes, glossary, question and answer page, pictures and related links. Also available in Spanish.

Why Is the Ocean Salty? - An easy-to-understand primer on salinity including the orgin of the oceans, the source of the ocean's salts, and the complexity and variability of salinity.

Trolling the Seas for New Medicines - The American Chemical Society brings you this website with information on how scientists discover and test potentially life-saving drugs from organisms in the ocean. This site also suggests connections to chemistry curriculum, classroom demonstrations and lessons, student projects, and answers to anticipated students' questions. High school level.

Water - Sea World's educational guide for grades 4-8 on the properties and characteristics of water.

Water Systems -"This is a great site with facts about water, the water cycle, and specific water systems like oceans, rivers and lakes. The site also visits the relationship between water and climate and real life concerns about water. The easy navigability of this site is especially useful for students and teachers alike. The site includes possible reasearch topics and a webquest. The site is user friendly and pertinent. Grades 4-8." Teena, 4th and 5th grade teacher

Water on the Web - A curriculum development project for advanced high school and undergraduate students that uses real-time environmental date to teach about lake systems. Lesson plan topics include oxygen solubility, conductivity, pH, water quality, water properties, and more.

Alpha 106 - The Iron Hypothesis - Why would scientists load their research vessel with 10 tonnes of iron sulphate and tip their precious cargo into the wild Southern Ocean? These modern-day scientist adventurers must have had a good reason. They did they wanted to test the iron (Fe) hypothesis. Grades 11,12.

Intute Earth Sciences Gateway - Intute provides free access to high quality internet resources for students, researchers and practitioners in the physical sciences, specifically in: astronomy, chemistry, earth sciences, materials science, physics, and general science. Available information includes lecture notes, text book chapters, tutorials, government publications, theses, and more. PSIgate also features scientific timelines, science career information, and access to their magazine, Spotlight.

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