
100 Science Fair Projects For High School
Do hamsters suffer from jet lag? Find out if hamsters have a circadian rhythm!
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Can you make a pineapple grow faster in soil, sand, or water? Let's find out!
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Have you ever wondered what happens when you put an egg in salt water? Find out in this science project!
Hard
Make a hologram with nothing more than a compass and some scraps of plexiglas!
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Can dogs tell the difference between blue and yellow? Find out in this science project!
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Have you ever wondered what happens when you add salt or sugar to water? Find out in this science project!
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Can plants learn? Find out if the Mimosa Pudica plant can be conditioned to respond to stimuli like animals do!
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Learn how to use Galileo's inclined plane experiment to demonstrate acceleration with a fun and easy science project!
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How does precision affect chaos? Join us as we explore the varying effects of precision on iterative processes!
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Have you ever wondered what kind of light we can't see? In this experiment, you will explore the invisible light called infrared and measure its temperature.
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Get your hands messy with this mysterious substance! Is it a liquid or a solid? Mix, squish and play to uncover its secrets!
Easy
How hard is that rock? You can learn how to classify your own rocks by their hardness just like geologists!
Medium
Create your own solar system model to scale on the sidewalk and take a walk through space!
Medium
What happens to seawater when the ocean temperatures rise? Let's explore how temperature affects the pH and salinity of seawater!
Hard
Let's find out how quickly biodegradable spoons can decompose in soil!
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Have you ever wondered why leaves change color in the fall? Let's find out by using chromatography to separate the colors of a green leaf!
Medium
Does physical activity before an exam help you do better?
Medium
Have you ever wondered how to make glow-in-the-dark stickers glow longer?
Medium
Can Monarch butterflies survive wet and freezing cold temperatures brought on by global warming? Find out in this science project!
Hard
Learn how to use parabolic mirrors to get the most out of solar cells and turn sunlight into electricity!
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Do different types of firewood produce different amounts of heat? Find out in this fun experiment!
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Can sea water help or hurt bamboo plants? Find out in this experiment!
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Do you like your food hot or cold? Find out how temperature affects your taste buds in this fun experiment!
Medium
Have you ever wondered how long soap bubbles can stay afloat in carbon dioxide? Let's find out!
Medium
Have you ever wondered how electricity is made? In this science project, you will explore the power of galvanic cells and discover how electricity is created!
Hard
Let's find out if aluminum foil can keep a bottle of water cold for a longer period of time!
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Do you want to find out if the number of people you survey affects the accuracy of the results?
Hard
Let's explore the differences between waterless and water-based urinals and see which one is more hygienic!
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Let's explore how temperature affects the amount of substances that can be dissolved in water!
Medium
Does classical music help children fall asleep faster? Find out in this science project!
Hard
Have you ever wanted to defy gravity? With this experiment, you can! Learn how to make a lifter that will levitate using the Biefeld-Brown effect.
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Discover how stalactites and stalagmites form in caves with this fun experiment!
Medium
Learn how to build bridges that can hold a lot of weight using triangles and squares!
Medium
Take a journey into a drop of water and explore the five kingdoms of life!
Medium
Join us on an adventure to explore the different kinds of insects living on three different species of trees!
Easy
Ever wondered what the odds are of you looking like your relative? Let's take a trip to Planet Planktonia and find out!
Hard
Join us on an adventure to save the world from mutant plantmonsters! We'll use Mendelian genetics to identify plantfairies that can be used for biocontrol projects.
Hard
Discover how different types of plants can affect the biodiversity of a region!
Medium
Does music affect your blood pressure? Find out in this fun experiment!
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Find out if boys have a higher or lower lung volume than girls in this fun experiment!
Medium
Learn about plate tectonics and earthquakes by building a model of the Earth's outer 300 km!
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Learn how humidity affects the size of different types of wood by measuring and drying them in an oven!
Hard
Let's find out which cooking oil has the highest saturated fat content and how long it takes for the iodine test to lose its color!
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Does the height of your ceiling affect the temperature of your room? Find out in this science project!
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Can adults learn a new language faster than children? Find out in this science project!
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Do you love playing video games? Do you know how it affects your health? Find out in this science project!
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Does antibacterial soap really kill more bacteria than regular soap? Find out in this fun science project!
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Can you remember 10 animals just by hearing a story? Find out how story linking can help you improve your memory!
Hard
Are horizontal mattress sutures stronger than vertical ones? Find out in this experiment!
Hard
Discover how denitrifying bacteria can help reduce nitrate levels in water and save the aquatic ecosystem!
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Discover how the Bernoulli's Principle works with different shapes and how it affects lift!
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Plant different types of plants together to see if they help each other grow better!
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How does age affect our ability to process conflicting information? Find out in this science project!
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Can cell phone radiation heat up water? Find out in this science project!
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Are African-American teenagers more likely to be obese than Caucasian teenagers? Find out in this science project!
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Does temperature affect the sound of a tuning fork? Find out in this science project!
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Find out how propeller size affects the thrust produced with this fun experiment!
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In this science project, you will compare the thermal insulation of air, sand, and Styrofoam to see which one can keep water warm the longest.
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How do skyscrapers withstand the force of wind? Build model skyscrapers and find out!
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Can oil absorbing polymers help clean up contaminated soil and make it suitable for growing plants? Find out in this science project!
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Are you curious about how different types of glass windows can affect the temperature inside a room? Find out in this science project!
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Can electricity help plants grow faster? Find out in this science project!
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Have you ever wondered what happens when you increase the voltage during electrolysis? Find out in this science project!
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Does sunlight kill bacteria in water? Find out in this science project!
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Does a corked bat make a baseball travel further than a wooden bat? Find out in this science project!
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Can herbal green tea reduce the heart rate of daphnia? Find out in this science project!
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Does acid rain affect the growth of sunflowers? Find out by testing different pH levels of water on sunflower plants!
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Does the density of a material affect how much sound it transmits? Find out in this science project!
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Find out what happens when you drop a metal ball on glass at different temperatures!
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Can calcium help brine shrimp eggs hatch faster? Find out in this science project!
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Does music help athletes run faster and farther? Find out in this fun experiment!
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Compare the efficiency of hydropower and wind power with this science project!
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Does the size of a speaker affect its frequency response? Find out in this science project!
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Is the water from a water cooler really more bacteria-filled than tap water? Find out in this science project!
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Does your computer take forever to start up? Find out how to make it faster with this science project!
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Have you ever noticed a strong smell when someone takes off their shoes? Find out why and how to reduce it in this science project!
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Does the color of your clothing affect how much UV radiation you're exposed to? Find out in this science project!
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Are you curious to know which type of wood is the strongest? Find out by comparing the strength of solid wood with that of plywood in this science project!
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Do you live near the sea? Find out if it affects how much water you use!
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Do you have trouble sleeping? Do you suffer from body aches and stress? This science project will explore how grounding our bodies while we sleep can help us get better ...
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Learn how wood changes size when exposed to different levels of humidity!
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Does vitamin D help plants grow faster? Find out in this science project!
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Find out if brushing your teeth with toothpaste can reduce the amount of bacteria in your mouth!
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Discover how to create beautiful shapes and images using simple geometric shapes and mathematical formulae.
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Does temperature affect the sound of a tuning fork? Find out in this science project!
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Find out which natural insect repellant is more effective: DEET or lemon grass oil?
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Does the size of a speaker enclosure affect the sound it produces? Find out in this science project!
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Do you ever feel like you can't concentrate in school because you didn't get enough sleep? Find out if lack of sleep really affects your grades in this science project!
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Does drinking isotonic drinks help long-distance runners improve their performance? Find out in this science project!
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Learn how to protect yourself from the sun's harmful UV radiation by testing different types of glass!
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Learn how temperature affects the resistance of a wire and how it affects the flow of electricity.
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Does the way you hold your tennis racquet affect how tired your muscles get? Find out in this science project!
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