100 Awesome Science Fair Project Ideas

Science fairs are a fun and interactive way to learn about how the world works in an up-close and personal, hands-on manner that  allows a person to showcase their favorite fields. But with so many interesting experiments in the world, how do you narrow your focus down to just one question you want to answer or hypothesis to test? Below is a list of one hundred interesting ideas to help you out in that all-important search for your next science fair project topic. The ideas cover a varied list of fields of study and a wide range of subjects from astronomy to zoology and everything between.

These projects are perfect starter ideas to get you thinking if you are stuck. But they can also be used on their own to create an awesome project that will wow your family, friends and classmates and may even make you the winner of your next science fair.

• How Does a Hovercraft Work?
• How do Duck Feet Swim?
• Design Aerodynamic Paper Airplanes
• Which Kite Flies Best?
• Race Milk Carton Boats.
• What Are Saturn’s Rings?
• Build an Astrolabe
• Test Evaporation Speed of Liquids.
• Do Tea and Coffee Stain Teeth?
• Best Methods for Cleaning Coins
• Vinegar and Baking Soda Balloon Inflation
• How Do Butterflies Fly?
• What is the Link Between the Moon and Tides?
• Why are there Seasons?
• Can Chewing Gum help you Recall Information More Easily?
• Which Food Molds Fastest?
• Physical Effects of Digital Gaming
• Make a Potato Clock
• Does Hair Color Impact Personality?
• Is The Five-Second Rule Reliable?
• Build a volcano.
• Solar oven.
• Does music affect plant growth?
• Do people like natural scents best?
• Does fertile soil conduct electricity more effectively?
• Static electricity. Does the color of hair affect conductivity?
• Climate change and ecosystems.
• Test food acidity.
• Test water for microorganisms.
• Can soda dissolve bone?
• Test ideal stargazing conditions.
• Build a lever.
• Test minerals for fluorescence.
• Make a string telephone.
• Design a device to prevent a dropped egg from smashing.
• Create fossils.
• Build a model cell.
• How do plant leaves get water?
• Make an ant farm.
• Grow a crystal.
• Can plants sunburn?
• How much water is in fruit?
• Use iodine vapor to detect fingerprints.
• How are taste and smell linked?
• Effects of dehydration on a potato.
• Make homemade lightning.
• What makes blood pressure rise?
• Discover the iron in breakfast cereal.
• How does sun block work?
• Peanut power.
• Test the energy of moving water.
• What material conducts electricity best?
• Structural soundness: Which shapes are strongest?
• How does plate tectonics work?
• How do fish breathe?
• Why are bubbles round?
• Best conditions for popping popcorn.
• What causes static electricity?
• Make a gear.
• How does blubber work?
• Pollution and water sources.
• What battery brand lasts longest?
• Build a model of the human heart.
• Demonstrate the water cycle.
• Build a soap-powered boat.
• Will birds eat oddly-colored seeds?
• Make a geyser.
• Make homemade slime.
• Do bacteria look different?
• How does milk become butter?
• Can you make eggs bounce?
• Make a prism.
• Build a molecule.
• Does hot air expand?
• What is buoyancy?
• Does salt in water increase buoyancy?
• Which object is densest?
• Sugar and salt. Which dissolves fastest.
• Make non-frozen ice cream.
• How do plants reproduce?
• What colors attract bees??
• Raise a caterpillar.
• Do worms help plants grow?
• Grow plants in up-side-down pots.
• PH of various soils.
• How do germs spread?
• Information retention while distracted.
• What is noise pollution.
• What makes stars shine?
• Grow a plant in air.
• Rock and mineral display.
• Make a magnifying glass.
• What microorganisms live in air?
• What substances conduct sound best?
• When does bread mold fastest?
• Parts of a seed.
• Why is cold air denser?
• Different types of cells.
• Which feathers fly farthest?
• Perform some optical illusions.

Science is all around you. Every time you wonder how the world works, that is science in action. A science fair, and the project ideas listed above are a catalyst for science and for your own understanding of the world’s workings. And if you win the science fair, that is just another bonus.