120 Best Science Fair Project Ideas for Students

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Science fair is a common education event where students of all academic levels will be given a chance to portray their technical skills and knowledge through science experiments or projects. Usually, for doing a science fair project, a good topic is essential. However, it will be difficult for some students to identify the best topic. So, to simplify the topic selection process, in this blog, we have shared a list of innovative science project ideas on various branches of science. Additionally, we have also explained how to select an ideal topic for your science fair project.

Explore this blog and get interesting science fair project topics on Physics, Chemistry, Biology, Environmental Science, and so on.

In case, your instructor asks you to participate in a science fair, never miss the opportunity. Working on science projects will help you to widen your theoretical and practical knowledge of the subject. Furthermore, it will aid you in improving your problem-solving skills, research skills, and critical thinking skills. Also, it will increase your interest in STEM [Science, Technology, Engineering, and Math] subjects.

Mostly, a science fair will be conducted in a competitive setting. Therefore, make sure to conduct your scientific experiment and present the findings properly.

Know How to Select an Excellent Science Fair Project Topic

Science Fair Project Ideas

Typically, you cannot work on a science project without a topic. So, first, determine a perfect science project topic by following the steps recommended below.

Understand your Science Fair Rules and Guidelines

Before you participate in your science fair, carefully read and understand the specifications provided by the science fair organizers. Reading the guidelines will help you get an idea about the project length, themes to work on, project requirements, and presentation structure.

Also Read: 120 Brilliant 8th Grade Science Fair Projects

Determine your interests

Next, find out your area of interest. Science is a vast field of study that is classified into different branches. So, it is always good to pick an area that interests you the most. It can be either science or technology.

If you choose a passionate project topic, then it will be more comfortable and enjoyable for you to work on.

Narrow down the subject

Once you identify your area of interest, narrow down your search and find a topic related to a specific concept within an area you are passionate about.

For instance, if physics is your favorite subject, then you can limit your search to ‘Electromagnetism’ and choose a unique topic from it.

Gather project ideas

Next, search and list out some best science fair project ideas from the subject you have chosen. At this step, make sure to concentrate on the queries you would like to investigate. Most importantly, instead of worrying about viability, generate as many project topics and ideas as you can.

Check the feasibility of the topic

Brainstorm each idea and check whether it is feasible or not. Also, analyze whether you will have access to the tools and equipment necessary for conducting the science experiment. Furthermore, look at each idea’s difficulty, resources, safety, and preparation time.

Choose a provable hypothesis

After you have narrowed down your choices, select a topic that has a clear and provable hypothesis. Typically, a hypothesis is a result prediction. It should be quantifiable, explicit, and present on prior information.

Discuss with your instructors

If possible, consult with your science teachers and get feedback from them for the topic you have chosen. They will help you in refining your project idea. Also, they will let you know whether your idea matches the educational goals and safety regulations or not.

Also Read: 75 Creative Unit Circle Project Ideas and Activities

List of Amazing Science Fair Project Ideas

Are you searching for the best science fair project topics? If yes, then feel free to take a look at the list shared below. In the list, you will get innovative project ideas on subjects such as physics, chemistry, earth science, biology, and so on.

Simple Science Fair Project Ideas

  1. What level of salt works best to hatch brine shrimp?
  2. How much weight can the surface tension of water hold?
  3. What plant fertilizer works best?
  4. Map atmospheric temperature using weather balloon data.
  5. What type of food allows mold to grow the fastest?
  6. Why do birds fly in a V-form?
  7. What is the effect of salt on the boiling temperature of water?
  8. Develop a psychrometer.
  9. Measure the oxygen content of the air.
  10. Test toxicity in soil or water.
  11. What type of grass seed grows the fastest?
  12. Experiment with plant genetics.
  13. Work with methods of noise control.
  14. Make a potato-powered battery.
  15. Test the chemical properties and physiological effects of saturated, unsaturated, and trans fats.

Outstanding Middle School Science Fair Project Topics

  1. Test the effect of UV rays on bacteria growth.
  2. Compare the properties and effects of organic and chemical fertilizers.
  3. Experiment with flood management and containment methods.
  4. Examine the role of enzymes and yeast in the fermentation or cheese-making process.
  5. Work on Kaleidoscope Science.
  6. Investigate the ‘Mpemba Effect’.
  7. Explain how color affects heating by absorption of light.
  8. Find the horsepower of a toy car.
  9. Measure the speed of moving objects with stroboscopic photography.
  10. Investigate various structures to reduce Tsunami damage.
  11. Make a phonograph using everyday items.
  12. Grow vegan Kombucha leather
  13. Move water with Archimedes Screw Pump.
  14. Analyze the effect of temperature on the elasticity of rubber bands.
  15. Measure your taste threshold.

Also Read: 95 Best Data Science Topics for Academic Projects

Interesting Science Fair Project Ideas

  1. Make a hygrometer with strands of hair.
  2. Analyze the effect of increased carbon dioxide or oxygen concentration on plant germination.
  3. Explore satellites with simulation software.
  4. Track geomagnetic storms in the ionosphere.
  5. Analyze the effect of sunspots on weather patterns.
  6. Conduct an orange juice titration demonstration.
  7. Motorize a robotic hand.
  8. Study photosynthesis using floating leaf disks.
  9. Explore Faraday’s law and Lenz’s law.
  10. Measure the sugar content of a liquid with a laser pointer.
  11. Measure height or distance with a Camera.
  12. Build and play a Theremin instrument.
  13. Measure the vibration frequency with light.
  14. Explain how spark plug gaps affect engine performance.
  15. Test wood adhesive durability.

Excellent Science Fair Project Ideas for High School Students

  1. Study bottle rocket performance with electronic sensors.
  2. Build an Arduino Robot.
  3. Test how pollution affects plants’ transpiration rates.
  4. Build a circuit to automatically water plants.
  5. Measure the speed of light with a microwave Oven.
  6. Design a speaker for bass.
  7. Model the global conveyor belt for the kitchen.
  8. Build an electronic piano with Raspberry Pi
  9. Make a Helio Tracker.
  10. Experiment with making gels.
  11. Model the human cardiovascular system.
  12. Measure the threshold of hearing sounds of various pitches.
  13. Build a heart rate monitor.
  14. Design a game to help Alzheimer’s patients.
  15. Construct a carnival buzzer game with a Raspberry Pi.

Best High School Science Fair Project Ideas

  1. Experiment with the effect of storage temperatures on batteries.
  2. Test the impact of various cooking methods on the depletion of vitamin C in food using indophenol.
  3. Build a miniature self-driving car.
  4. Measure the speed of light in gelatin using a laser.
  5. Analyze how the strength of a magnet changes with temperature.
  6. Build an impossible wind-powered car.
  7. Examine how and when dinoflagellates grow.
  8. Make an electric guitar pickup.
  9. Build a spring scale by applying Hooke’s law.
  10. Make sustainable fabrics from seaweed.
  11. Make a stethoscope.
  12. Measure knee stress with a mechanical model.
  13. Convert plants into biofuel with the power of enzymes.
  14. Measure emotion using pulse rate.
  15. Investigate the kinetics of the color-changing iodine clock reaction.

Also Read: 75 Innovative Science Investigatory Project Ideas

Awesome Science Fair Project Topics

  1. Compare the effect of antibiotics on gram-positive and gram-negative bacteria.
  2. Test the concentration and effect of minerals and pH in soil and water samples.
  3. Analyze the by-products of gasoline
  4. Experiment with the design and function of wind turbines or water wheels.
  5. Explore the chemistry of red flower pigments.
  6. Measure the frequency response of a paper speaker.
  7. Build a raft powered by surface tension.
  8. Measure speed with a video camera.
  9. Mix light to make colors.
  10. Make a rubber band paddle boat.
  11. Test sunscreen effectiveness and water solubility.
  12. Extract energy from grass.
  13. Measure the diameter of the Earth’s core using seismic waves around the globe.
  14. Extract Onion DNA.
  15. Monitor water toxicity using Daphnia.
  1. Compare the bending strength and durability of different building materials.
  2. Experiment with various methods of water filtration
  3. Work on chlorophyll extraction.
  4. Build a Gauss Rifle.
  5. Make a Piezoelectric pickup for Acoustic Guitar.
  6. Build a personal medicine app to help patients.
  7. Test for bias in a photo lineup.
  8. Convert trash to gas.
  9. Locate an earthquake using a global seismic network.
  10. Recycle greywater.
  11. Identify an Exoplanet using the Kepler Space Telescope.
  12. Convert oil into clean fuel.
  13. Build an electric current detector using a magnet.
  14. Make a Pomodoro study clock.
  15. Make a dimmer switch with a pencil.

Innovative Science Fair Project Topics

  1. Investigate methods of improving home insulation.
  2. Analyze how roots grow when the direction of gravity changes.
  3. Build a floating Maglev train.
  4. Make a xylophone out of a copper pipe.
  5. Test the accuracy of eyewitness testimony.
  6. Trace ancient ancestry through DNA.
  7. Suggest alternative sources for paper fiber.
  8. Harvest freshwater with a fog catcher.
  9. Remove silver tarnish with a homemade battery.
  10. Invent an interactive toy with a Raspberry Pi.
  11. Engineer an LED Night lamp.
  12. Design a wearable air quality index monitor.
  13. Create light-up artwork with a Raspberry Pi.
  14. Build a crystal radio.
  15. Make a Reed Switch Motor.

Also Read: R vs. Stata: Which is the Best for Data Science?


From the above-shared list, without any hesitation, choose any project idea of your interest. Hopefully, the list of science project ideas that we have recommended here will allow you to win your science fair competition.

Jacob Smith Research Paper Topics Reading Time: 9 minutes

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