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Middle School Science Fair Project Ideas

Great selection of middle school science fair project ideas. These science fair projects can help you find middle school level ideas for your science fair.

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Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.
Do Plants Need Water?
Third Grade
Fourth Grade
In this experiment we use Scotch Guard to make sand that resists water.
Hydrophobic Sand
Middle School
Seventh Grade
In this free science fair project, you'll explore the unique characteristics and distinctive behaviors of reptiles. Great project for middle school students.
Raising Reptiles
Middle School
Easy
A hydrometer is an instrument used to compare the density (mass per unit volume) of a liquid substance to the density of pure water. Learn how to make one!
Hydrometer
Middle School
Easy
Explore fun facts about tropical rain forests and learn how to measure relative humidity in this cool science fair project idea.
Rain Forests and High Humidity: How to Measure Relative Humidity?
Middle School
Easy
In this free science fair project idea, we learn about fronts and how they move about and affect the weather.
Fronts: Moving Air Masses
Middle School
Earth & Space Science
Check out this free and fun science fair project for middle school students demonstrating the scattering of light by oxygen molecules in Earth's atmosphere.
Demonstration of the Phenomenon of Scattering of Light
Middle School
Easy
In this free science fair project idea, we demonstrate and analyze the effects of erosion on crustal material.
Erosion: The Breakdown and Movement of Crustal Material
Middle School
Earth & Space Science
In this free science fair project idea, we model Focault's pendulum and the rotation of the earth around its axis.
Rotation: The Spinning of the Earth on Its Axis
Middle School
Earth & Space Science
What color do you get when you mix red and green colors? It could be yellow or brown depending on the process. Do the free science fair project to find out.
Color Addition
Middle School
Easy
Check out this fun middle school science fair project idea on how mixture works and experiment with separating the particles in different kinds of mixtures.
Mix it Up! Separate Particles in Different Kinds of Mixture
Middle School
Easy
The objective of this science fair project is to analyze the effects of salinity and temperature on water.
How Does Salinity and Temperature Affect the Density of Water?
Middle School
Elementary School
This project researches how big a forest has to be to contain key forest interior species?
The Effect of Forest Fragmentation on Forest Interior Species
Middle School
Zoology

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