• 1.800.860.6272
  • Shopping Cart

    There are 0 items in your cart.

    You have no items in your shopping cart.

    Cart Subtotal: $0.00

    Home / Science projects / High School Science Fair Projects
    • High School Science Fair Projects

      High School Science Fair Projects

      Below are ideas to get you started developing a project of your own. Choose a topic that interests you, then begin your research and build your project's hypothesis from there!

      All high school projects require a high level of original thought and development, so these ideas are merely springboards to help you develop your own project. To participate in upper-level competition, a project should be relevant to current science and technology and should present a benefit to society. Start brainstorming by looking at the ISEF categories; it's also a good idea to check the ISEF guidelines before you choose a topic.

      - For tips on performing your experiment and presenting your project, see our free science fair guide.

      - Browse our Science Fair Supplies category for more project ideas and helpful kits.

      Life Science

      • Compare the effect of antibiotics on gram-positive and gram-negative bacteria. (Grow your own cultures with agar & petri dishes. For a sample procedure and more project ideas, see our bacteria science project guide.)
      • Run a bioassay to test for toxicity in water or soil.
      • Test the effect of ultraviolet radiation on bacteria growth.
      • Do different types of bread grow different types of mold? Does temperature or light affect mold growth?
      • Experiment with plant genetics (plant hybrids, cross-breeding).
      • Test factors like smoke or pollution that might affect transpiration rates for plants.
      • Investigate the effects of increased oxygen or carbon dioxide concentration on plant germination.
      • Find out the differences in properties and effects of organic vs. chemical fertilizers.

      reward graphicGet 5% back on every online order!
      It's easy and hassle free. Learn more.

      Earth Science

      • Explore methods of erosion prevention, test effects of different soil composition on erosion (e.g. how does more clay compare to more sand?).
      • Experiment with methods of flood management and containment.
      • Investigate the effects of sunspots on weather patterns.
      • Work with methods for forecasting weather.
      • Test the concentration and effect of minerals and pH in soil and water samples. (Use water test strips and a soil analyzer.)
      • Determine chemical makeup of rain in your area; test possible hazardous effects.

      Physical Science

      • Study acoustic models and methods of noise control. (A sound measurement kit might be helpful.)
      • Experiment with the effect of storage temperatures on batteries.
      • Develop improvements in battery chargers; try methods of using solar cells to recharge batteries.
      • Compare the bending strength and durability of different building materials.
      • Experiment with building materials that are fire-preventative.
      • Design industrial uses of magnets; test the effects of magnetic and electromagnetic fields on living organisms such as brine shrimp.
      • Design a project in advanced robotic programming.


      • Test the effects of the pH level of a solution on the corrosion of iron and copper; explore different methods of corrosion prevention.
      • Experiment with types, effectiveness, and the impact on nutritional value of preservatives in food.
      • Compare the properties and effects of artificial sweetener vs. sugar or other natural sweeteners. (For this and the following tests, you might consider the Chemistry of Food kit.)
      • Test the chemical properties and physiological impact of saturated, unsaturated, and trans fats.
      • Use indophenol to test the effect of different cooking methods on the depletion of vitamin C in food.
      • Investigate the role of enzymes and yeast in the fermentation or cheese-making process.
      • Experiment with different methods of water filtration/purification (such as solar distillation).
      • Analyze the by-products of gasoline; compare efficiency of various octane levels.

      Environmental Science

      • Compare or develop methods of hydrogen production and storage for use in fuel cells.
      • Investigate methods of improving home insulation.
      • Experiment with expanded uses of solar energy.
      • Test methods for cleaning up and neutralizing the effect of oil in salt water with this oil spill cleanup kit.
      • Work with methods of processing/recycling non-biodegradable items; experiment with decomposition aids.
      • Experiment with design and function of wind turbines or water wheels.
      • Test for harmful effects of pesticides; test or develop natural/organic alternatives; test the effectiveness of common pesticides such as DEET.
      • Which type and color of roofing material provides the most energy efficiency?

      For more in-depth project ideas, we recommend the Science Buddies website.

    « Previous Article: Bioassay Test for Toxicity

    Next Article: Make a Plant Herbarium »

    « Previous Article: Storms

    Next Article: Ocean Animals Worksheet »


    By: kylee
    Date: Apr 08, 2017

    how to clean up oil’s spills by using paper towel,cottons ball, iron fillings and margenent

    By: zykemia venerable
    Date: Dec 18, 2015

    nice job I love the ideas like the one forecasting weather NICE JOB!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    By: p.a.aditya
    Date: Sep 08, 2015

    how can produce electricity from bio-gas?

    By: Samkelo Pilson
    Date: Jul 22, 2015

    I will like to do physics science because I’m more interested in electrons devices.

    By: roneshia
    Date: Jan 16, 2015

    i want a sample projet to do for school and that is it

    By: Habeke Bekele
    Date: Sep 28, 2014

    Well, I have two in mind right now and the only reason I’m not working on them is because One of them is well…. freaky!

    Here are the two projects:

    Effect of caffeine on daphnia heart rate

    Effect of music on bacterial growth

    By: jj
    Date: Sep 07, 2014

    Heyyyyyy… i’m in 9th grade and I need to do a science project (on anything). if you have any ideas, please email me.