All Science Fair Projects

Over 1000 FREE Science Fair Project Ideas!

Environmental Pollution: The effect of carbon dioxide on plant growthFeatured science projectScience project video

Materials

  • 1 small bag of potting soil
  • 2 two-liter soda bottles with the tops cut off
  • 4 peat cups with seeds already germinated (just sprouted) in peat cups
  • 2 shallow dishes or paper cups cut in half
  • 30 g baking soda
  • 60 mL white vinegar
  • Scale
  • Graduated cylinder
  • Thermometer
  • Ruler

See our all-time most popular science projects
You might also like these projects
    Search science fair projects Browse science fair projects
    popular science fair projects
    Complexity level:
    7
    Project cost ($):
    Time required:
    Approximately 1 hour to complete initial set-up, with 15 to 30 minutes daily observation and discussion for five days.
    Material availability:
    Safety concerns: