Science Fair Project Ideas for 12th Graders

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Twelfth-grade science fair projects can be interesting and even groundbreaking. High school seniors should be able to identify a project idea on their own and can conduct the science fair project and report on it without much assistance. Most 12th-grade science fair projects will involve proposing a hypothesis and testing it with an experiment. Advanced models and inventions offer other options for a successful 12th-grade project.

12th Grade Science Fair Project Ideas

  • What is the best way to keep the fizz in an opened carbonated soft drink?
  • Find and test a non-toxic antifreeze.
  • Study the toxicity of energy drinks.
  • Measure the toxicity of silver-mercury amalgam fillings.
  • Determine which type of invisible ink is the most invisible.
  • Measure crystal growth rate as a function of temperature.
  • Which pesticide is most effective against cockroaches? ants? fleas? Is it the same chemical? Which pesticide is safest for use around food? Which is friendliest to the environment?
  • Test products for impurities. For example, you could compare the amount of lead in different brands of bottled water. If a label says a product does not contain heavy metal, is the label accurate? Do you see any evidence of leaching of hazardous chemicals from plastic into water over time?
  • Which sunless tanning product produces the most realistic-looking tan?
  • Which brand of disposable contact lenses last the longest before a person decides to switch them out?
  • Formulate a non-toxic or biodegradable ink.
  • Make an edible water bottle and compare the environmental impacts of it versus other water bottles.
  • Test the efficiency of different shapes of fan blades.
  • Can bath water be used for watering plants or the garden?
  • Can you tell how much biodiversity is in a water sample by how murky the water is?
  • Study the effect of landscaping on a building's energy consumption.
  • Determine whether ethanol really does burn more cleanly than gasoline.
  • Is there a correlation between attendance and GPA? Is there a correlation between how close to the front of the classroom a student sits and GPA?
  • Compare the wet strength of different brands of paper towels.
  • Which method of cooking destroys the most bacteria?
  • Are hybrid cars really more energy-efficient than gas or diesel-powered cars?
  • Which disinfectant kills the most bacteria? Which disinfectant is the safest to use?