What Does Water Testing Tell Us about Water Quality?
Students test water from multiple locations on the Potomac River for dissolved oxygen, nitrates, phosphates, pH levels, salinity, and turbidity. What do these tests tell us about the health of the river? Related videos on…
Food Waste
Food waste is a challenging global concern that affects resources such as land, energy and water. This video will show students that food is wasted along various steps of the growing, distributing, selling and consumptio…
The Chemistry of Water Quality Tests
How can we ensure that fresh water continues to be available for human use? The Hach company explores the chemistry that goes into the testing of water quality – how to design an environmentally friendly and valuable …
What Do Land Use and Bird Species Tell Us about the Health of the Potomac River?
Join students and educators from the Chesapeake Bay Foundation as they assess the health of the Potomac River based on land use and observed bird species. Additional videos on water testing and a species diversity are rec…
How Do Land Use, Physical Parameters, and Benthic Surveys Measure the Health of a Stream?
Looking at multiple factors (water quality testing, macroinvertebrates, and land use), students assess the health of the Davis Branch Stream in Howard County, Maryland. The impact of land use, in particular, is a complex …