Nitrogen is one of the essential plant nutrients found in soil. Students measure the amount of nitrogen in several different soils. They then examine the role of nitrogen in plant growth and consider the effect of excess nutrients in an ecosystem. Developed by SEPUP.
Scientific Concepts:
Soil consists of weathered rocks and decomposed organic materials and often has layers with different physical and chemical characteristics
Water is a solvent that carries dissolved material through soil to rivers and oceans
Technological solutions have intended benefits and unintended consequences
Maintaining environmental health involves monitoring soil and water quality
Content List:
1Teacher's Guide with MSDS
32Student Worksheets and Guides
1Potting soil, Vial
1Nitrate testing powder, Vial
2Fertilizer solution, Bottle
3Nitrate extraction solution, Bottle
8Vials labeledN
8Vials labeledB
16AB trays
8Stir sticks
8White scoops
8Filter funnels, SEPUP
8Filter-paper circles, fine
83-mL pipets
8Nitrogen color charts
8Cups, 30-ml, graduated
Classroom Planning:
To complete this kit requires one to two ~50 minute periods