Curated OER
Subsurface Contamination of Groundwater
Students evaluate the potential problems associated with underground storage tanks. They research the potential hazards from various subsurface pollutants and simulate a superfund site cleanup.
Curated OER
Teacher's Guide For: Water Temperature and Salinity Experiment
Learners experiment with water density, temperature and salinity. For this water lesson, students observe how the coldest water sinks to the bottom of a test tube, and how saltwater sinks in comparison to freshwater.