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Just as air can have different densities, water can have different densities as well. As the salinity of water increases, the density increases as well. Fresh eggs will float in saltwater, but will sink in freshwater. This will show that as the salinity increases the density also increases.
Grade Level   4 5 6 7 8 9 10 11 12
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2
Sailors for the Sea unites boaters to protect the ocean. Get involved with clean regattas, informative articles on ocean health and habitat, and environental lesson plans for kids.
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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3
Quality lesson plans, activities, and other materials for formal and informal educators from the NOW community.
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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Earthguide is dedicated to providing online materials for K-14 students, teachers, and the public that enhances lifelong learning and encourages positive action related to the management of the Earth, its living and natural resources, and society. We do this by building online content for individual...
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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5
Published in 2009
Students in grades 3 to 8 use a tabletop tsunami generator to observe the devastation of these massive waves. They see how a tsunami moves across the ocean and what happens when it reaches the continental shelf. Students make villages of model houses and buildings to test how different material...
Grade Level   3 4 5 6 7 8
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6
"Water freezes at 32 degrees Fahrenheit (0 degrees Celsius). Adding salt to water lowers the freezing point. How low the freezing point goes depends upon the amount of salt in the water. The students will make homemade ice cream but the """"freezing times"""" will vary using different amounts of...
Grade Level   4 5 6 7 8 9 10 11 12
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7
"NOAA's Monitor National Marine Sanctuary offers science, technology, engineering, art, and math lesson plans for K-12 educators. For example, Mock Shipwreck: Mapping the Past, a lesson for students in grades 9-12, challenges teams of """"divers"""" to create sectioned, scaled drawings of a mock...
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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8
Hey Kids! If you are interested in the USS Monitor, marine life, or just fascinated by shipwrecks, this is the place for you! Did you know that the USS Monitor is one of the most famous warships of all time? That it was the Union’s first ironclad and was built in only 100 days? That it sank off...
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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9
This module, intended for grades 3 to 5, includes a storybook and three classroom activities. In the storybook, three kids work collaboratively to explore and investigate surface currents found in the ocean and the Great Lakes while learning about the journey of a seafaring plastic duck. Three...
Grade Level   3 4 5
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10
Explore an ocean's-worth of information related to our efforts to protect and restore the nation's waters from pollution. You'll find experiments and activities for elementary school students and life-long learners alike. We hope the information here helps inspire you and others to further...
Grade Level   K 1 2 3 4 5 6 7 8
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11
"Students complete a form that requires them to make decisions about how severely different types of marine debris affect animals, people, vessels, and habitat. As a class, results are totaled and analyzed to determine which types of marine debris are most harmful to the different categories....
Grade Level   4 5 6 7 8
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12
The Alaska Tsunami Education program blends Alaska Native knowledge and science instruction. Hands-on, standards-aligned classroom lessons, interactive multimedia, and mapping projects for grades K through 12 give students an opportunity to learn the science of tsunamis in a culturally relevant...
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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