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Why Is the Water Green? Student Laboratory Kit

By: The Flinn Staff

Item #: FB1795

Price: $67.20

In the Why is the Water Green? Pollution Laboratory Kit for environmental science, examine the effects of common pollutants on an organism that is abundant in all aquatic environments—algae.

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This item can only be shipped to schools, museums and science centers

Product Details

Examine the effects of common pollutants on an organism that is abundant in all aquatic environments—algae! Simulated fertilizer run-off containing nitrates and phosphates is added to locally collected algae-rich pond water or to purchased algae cultures. The amount of growth is compared against control samples without adding nutrients. Students also examine the algal cells using a microscope and record cell counts. After completion of this activity, students will understand how fertilizer run-off leads to algae blooms and why nitrate and phosphate pollution is an important environmental concern.

Enough materials provided for a class of 30 students working in pairs. Desmids cultures are requited and available separately.


Materials Included in Kit: 
Ammonium phosphate solution, 0.1 M, 100 mL
Bristol’s algae media, concentrate, 100x, 100 mL
Sodium nitrate solution, 0.1 M, 100 mL
Cover slips, plastic, 18 mm x 18 mm, pkg/100
Microscope slides, glass, pkg/72
Pipet, Beral-type, wide stem, 60
Vial, snap-on cap, clear plastic, 50 mL, 40

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Asking questions and defining problems
Analyzing and interpreting data
Planning and carrying out investigations
Engaging in argument from evidence

Disciplinary Core Ideas

MS-LS2.B: Cycle of Matter and Energy Transfer in Ecosystems
HS-LS2.B: Cycle of Matter and Energy Transfer in Ecosystems

Crosscutting Concepts

Cause and effect
Scale, proportion, and quantity
Energy and matter

Performance Expectations

HS-LS2-4. Use mathematical representations to support claims for the cycling of matter and flow of energy among organisms in an ecosystem.