Disappearing Wetlands: Explore the relationship between mass, density, and salinity by measuring the mass and volume of four saltwater solutions of increasing strength.

Students build a saltwater circuit, which is an electrical circuit that uses saltwater as part of the circuit. Students investigate the conductivity of saltwater, and develop an understanding of how the amount of salt in a solution...

Here you can learn all about salt water crocodiles. What makes them different than fresh water crocodiles? Where are they found? What kind of habitat do they live in?

Compare the freshwater stickleback with its saltwater relative and trace the evolutionary changes of the fish. Includes a lecture by Dr. David Kingley, as well as an animation showing the evolution of the stickleback in an Alaskan lake.

An image of the Florida State Saltwater Mammal.

An image of the Florida State Saltwater Mammal.

An image of the Florida State Saltwater Mammal.

An image of the Florida State Saltwater Mammal.

An image of the New Hampshire State Saltwater Game Fish.

An image of the New Hampshire State Saltwater Game Fish.

An image of the New Hampshire State Saltwater Game Fish.

An image of the New Hampshire State Saltwater Game Fish.

An image of the New Hampshire State Saltwater Game Fish.

An image of the New Hampshire State Saltwater Game Fish.

A clipart illustration by Phillip Martin titled "State Salt Water Fish of Alabama - Fighting Tarpon."

A clipart illustration by Phillip Martin titled "Florida State Saltwater Animal -- Porpoise."

A clipart illustration by Phillip Martin titled "Louisiana State Saltwater Fish - Spotted Sea Trout."

A video and a short multiple-choice quiz on the topic of aquatic ecosystems. It discusses the difference between freshwater and saltwater ecosystems, then explains what the three ecozones are in a marine ecosystem.

In this experiment, students are asked to collect data in order to prepare a calibration curve showing the relationship between the percentage of salt and the mass of salt water. Using this graph, students will be able to determine the...

Students use a thermal process approach to design, build and test a small-scale desalination plant that is capable of significantly removing the salt content from a saltwater solution. Students use a saltwater circuit to test the...

Students perform an experiment comparing the impacts of CO2 on salt water and on fresh water. In a short demonstration, students examine how distilled water and seawater are affected differently by increasing carbon dioxide in the air.

Young students are introduced to the complex systems of the Earth through numerous lessons on its natural resources, processes, weather, climate and landforms. Key earth science topics include rocks, soils and minerals, water and natural...

Through 10 lessons and more than 20 hands-on activities, students are introduced to the concept of an environment and the many interactions within it. As they learn about natural and human-made environments, as well as renewable and...

Students are presented with a real-life problem as a challenge to investigate, research and solve. Specifically, they are asked to investigate why salt water helps a sore throat, and how engineers apply this understanding to solve other...