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Science Fair Project Ideas

Education.com has assembled a vast collection of science fair project ideas written by science teachers, professional scientists, and educational consultants on popular science fair topics ranging from physics and chemistry to biology and even sociology. We offer free science fair ideas suitable for every grade level, be it preschool, kindergarten, elementary school, middle school, or high school. Check the boxes in the sidebar to filter your results, or use the search bar to find that perfect science fair project or experiment your child will be sure to love.

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1,618 results

Apparent Movement of the Sun

The apparent movement of the sun has been used to keep time since the bronze age. In this science fair project, kids plot solar time against mean solar time.

What is a barycenter? Kids learn how gravity and mass influence the orbit of binary systems like planets and moons or stars and planets in this cool experiment.

Kepler's 3rd Law: Orbital Period vs. Distance

This fun science fair project for 8th grade demonstrates what Kepler's 3rd law predicts about a planet's orbital period and its distance from the sun.

Surface Features of the Moon Model

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

The Limewater Carbon Dioxide Test

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

Aquatic Respiration

How do fish breathe? How do gills work? In this science project, learn about aquatic respiration and find a fish's breathing rate in different temperatures.

How to Measure Viscosity of Liquids

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Seafloor Spreading Model

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

What is Topography?

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Scale Model of the Solar System

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Magnifying Power and Focal Length of a Lens

Learn how the focal length of a lens affects a magnifying glass's magnifying power in this cool science fair project idea for 8th grade.

Use the Altitude of Polaris to Find Latitude

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

What Causes the Phases of the Moon?

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

Handedness and Footedness Test

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

Regrow Cabbage: Vegetative Reproduction and Cloning Plants

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

Determine the Effect of Gray Water on Plant Growth

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

Rust Chemistry: How Does Rust Form?

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Rate of Diffusion

Kids learn about Brownian motion, diffusion, and how temperature is a key factor affecting the rate of diffusion in this cool science project.

Plastic Wrap Science Fair Project: Polymer Permeability

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Parts of a Bean Seed

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

Factors Affecting Seed Germination

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Positive and Negative Geotropism

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Goldfish vs. Human Respiration Rate

Do goldfish have a higher respiration rate than humans? Does size affect how fast you breathe? Find out in this fun science project!

Fruit Fly Life Cycle

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

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