An experiment to test what happens when ocean water hits a freshwater estuary. Each step is demonstrated with photographs and the difference between salinity and density is explained.

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

Students investigate differences in ocean water density, and record density data from salt, ice, and hot water samples in their notebooks. Students then simulate ocean water temperature levels in a simulation.

Describes the properties of seawater and the variations depending on its location, e.g., near a shoreline, in an estuary, or as sea ice. Discusses the instruments scientists use to measure the density of water and explains other...

This large PDF file integrates math, science, and language into several lessons about characteristics of the oceans. Topics include ocean currents, tides, density, marine life, and pollution.

Students first predict, then mix several liquids and then add salt to the mix, simulating a lava lamp.

Students map the patterns of the major ocean currents, and learn about the influences of wind, water temperature, landmasses, and water density on currents.