Sea Water Mixing and Sinking

Water with varying amounts of dissolved salt are dyed and then used to compare densities. The objective is to discover the effect of salinity, and therefore density, on ocean water on the stability of the ocean. Many branches of science...

Learners study the vent and non vent deep sea and see the differences in habitats.  For this investigative lesson students complete a worksheet and work in groups.

Many arctic mammals, such as polar bears, seals, and walruses, depend on the sea ice about 3 m thick for their habitat. Pupils investigate the properties of polar water and polar ice and their properties through readings, videos, and...

Seawater density varies depending upon your location, which means that ships float higher or lower in the ocean depending upon their location as well. In a hands-on activity, individuals explore the density of ocean water. In groups,...

Is your current lesson plan for salt and freshwater literacy leaving you high and dry? If so, dive into part one of a seven-part series that explores the physical features of Earth's salt and freshwater sources. Junior hydrologists...

In this drinking water worksheet, students complete a crossword puzzle given 23 clues about drinking water purification, water content, contaminants, and softeners.

Want to get your learners motivated in science class? Given only a piece of aluminum foil, assign groups the task of designing a "barge" that will support the weight of a bunch of pennies.  The group who is able to put the most pennies...

How does water vapor move from point A to point B? The second installment in a series of four on the water cycle allows scholars to analyze satellite images to answer this question. The satellite animations show how evaporation and wind...

Students experiment with different salinities of water using straws and different colors of water. They collect and interpret data from the experiment.

Students set up working models demonstrating lake turnover and the formation of deep water masses in the oceans.