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Perspectives Video: Experts
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Perspectives Video: Expert
Learn how the ocean pressures the climate into changing.
Download the CPALMS Perspectives video student note taking guide.
Type: Perspectives Video: Expert
Video/Audio/Animation
With an often unexpected outcome from a simple experiment, students can discover the factors that cause and influence thermohaline circulation in our oceans. In two 45-minute class periods, students complete activities where they observe the melting of ice cubes in saltwater and freshwater, using basic materials: clear plastic cups, ice cubes, water, salt, food coloring, and thermometers. There are no prerequisites for this lesson but it is helpful if students are familiar with the concepts of density and buoyancy as well as the salinity of seawater. It is also helpful if students understand that dissolving salt in water will lower the freezing point of water. There are additional follow up investigations that help students appreciate and understand the importance of the ocean's influence on Earth's climate.
Type: Video/Audio/Animation
Parent Resources
Perspectives Video: Expert
Learn how the ocean pressures the climate into changing.
Download the CPALMS Perspectives video student note taking guide.
Type: Perspectives Video: Expert