100+ 8th Grade Science Fair Projects & Ideas
Are you an 8th grade student looking to come up with a science fair project idea? Look no further! In this blog post, we are sharing over 100 8th grade science fair project ideas. From biology to chemistry to video games, there is bound to be an idea on this list that piques your interest!
How to Pick a Good Topic
When choosing a topic for an 8th grade science fair project, it’s extremely important that you pick one that sparks your curiosity over a “smart” topic. It’s tempting to choose a topic that is advanced, but if you are not initially interested in it, the choice will be fruitless.
Choosing a topic that interests you will not only help you appear more passionate about your topic when presenting, but also help you stay interested throughout the process. However, there are times when regular topics don’t stand out to you, so, I have compiled a list of 8th Grade Science Fair Projects sorted by category for you to look through.
Still, it’s important that you don’t feel confined to the topics presented online. If anything, find a topic that you’re interested in and ask for advice from your teachers or classmates to find a more specific topic to do your project on.
8th Grade Science Fair Project Categories (Alphabetically)
Biology 8th Grade Science Fair Projects
Extract Onion, Banana, Strawberry, or your own DNA
Determine your threshold of taste (sweet, sour, and salty)
Make a heart rate monitor circuit
Create a blood simulation to investigate anticoagulants and blood disorders
Measure your threshold of hearing
Measure how body temperature and reaction time vary throughout the day
Model the human cardiovascular system
Use spin tests to discover how your eyes and ears affect your balance and dizziness
Determine how much huddling reduces heat loss in warm-blooded animals
Conduct fingerprint analysis
Cast animal tracks
Explore symbiosis with nitrogen-fixing bacteria
Chemistry 8th Grade Science Fair Projects
Find different ways to melt ice faster
Investigate how particle size affects drinking water filtration
Demonstrate the chemistry of making ice cream
Make a battery with metal, air, and salt water
Make your own shampoo
Show the reaction between baking soda and vinegar
Show how an instant cold pack works
Color changing iodine clock reaction
Test what orange juice has the most Vitamin C
Use pennies to test pH and copper corrosion
Compare electrolytes in sports drinks
Split hydrogen and oxygen in water
Extract bismuth from Pepto-Bismol
Make your own crystals
Computer Science 8th Grade Science Fair Projects
Teach a computer to play tic-tac-toe
Use Artificial Intelligence to classify emotions
Build an App
Identify objects with Machine Learning
Make a Motion Sensor Alarm
Design your own video game
Code a calculator
Make an encryption program
Ecosystem 8th Grade Science Fair Projects
Test water quality in your area
Study the effects of acid rain
Test the makeup of different soils
Demonstrate the effects of pollution in water
Test the effects of acid rain
See how plants can stop soil erosion
Investigate the Greenhouse Effect
Investigate Deforestation
Do Earthworm diets affect the soil quality?
How heavy metals affect aquatic environments
The effect of fertilizer runoff on water quality
Guide a plant to the sun through a maze
Dissect a flower
Engineering 8th Grade Science Fair Projects
Build an electric motor
Make your own radio
Build a lightbulb
Build a battery
Design a robotic hand
Make a Newton’s cradle
Make a hydraulic elevator
Assemble a spring scale
Build cars out of different materials and crash test them
Find the center of gravity
Create a solar oven
Build an infinity mirror
Build your own solar-powered car
Build a geothermal power plant model
Food Science 8th Grade Science Fair Projects
See if eating healthy has an effect on physical fitness
Explore the controversy in genetically modified foods
Does caffeine affect fruit flies' survival rate?
Explore the concentration of Carbon Dioxide in Soda
How do food preservatives help fight against microbes?
Do fruits and vegetables have an electric charge?
Does light affect how fast food spoils?
Are there negative effects of reusing water bottles?
How can one control the ripening of fruits?
Make your own marshmallows
Green Energy 8th Grade Science Fair Projects
Explore the different sizes of windmill blades
Benefits of glass recycling
Create a hydroponics garden
Explore the effects of plant growth after planting the same crop for a while
How well do enzymes work in laundry when you wash it with cold water?
How Eco-Friendly is your sunscreen?
Make fabrics from seaweed
Grow vegan leather
Explore biodegradable packaging
Physics 8th Grade Science Fair Projects
Stand on a pile of paper cups
Measure buoyancy over time
Explore Newton’s Laws
Explore how color affects heating by light absorption
Measure the speed of light in different materials
Build a levitating water fountain
Measure surface tension of different liquids
Model gravity in our solar system
Explore how the size of blood spatter correlates to the distance it fell
Make your own Cloud Chamber
Discover the physics of artificial gravity
See if water can remain a liquid below its freezing point
Test different insulation materials
Sports Science 8th Grade Science Fair Projects
Measure changes in Carbon Dioxide levels before and after exercising
Determine the intensity level of impacts during sports games or practice
Determine if regular aerobic exercise can increase lung capacity
Explore where a ball’s bouncing energy goes
See how your heart rate changes with exercise
Explore the geometry of banking a basket in basketball
See what bat is better for baseball, wood or aluminum?
See if eye dominance affects basketball shooting
How under-inflated tires affect riding a bike
How high can you throw different sports balls?
How does hockey stick flex affect the accuracy and speed of a shot
Video Games 8th Grade Science Fair Projects
Compare reaction times of video game players and non-video game players
Design your own virtual reality headset
Create your own 3D models in virtual reality
Explore how hit boxes size affects score
Evaluate how changing the timing between animation pose affects how you perceive the quality of the game
Design a city of the future with SimCity
Create a flight simulator
Investigate the role of music in video games
Moving Forward on a Topic
Also, the topics I have listed won’t explain themselves and are very broad. If a topic piques your interest, do some research about it. This will help you gain background knowledge and know if the topic will work for your 8th Grade Science Fair Project. Good luck!
About Inspirit AI
AI Scholars Live Online is a 10 session (25-hour) program that exposes high school students to fundamental AI concepts and guides them to build a socially impactful project. Taught by our team of graduate students from Stanford, MIT, and more, students receive a personalized learning experience in small groups with a student-teacher ratio of 5:1.
