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Fourth Grade Science Fair Project Ideas

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

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This science fair project idea determines which method of hand cleansing is the most effective.
Effective Hand Washing
Fourth Grade
Elementary School
How Does a Compass Work?
Fourth Grade
Elementary School
In this science fair project, students will use the streak test to tell minerals apart from each other.
Streak Test: A Way to Tell Minerals Apart
Fourth Grade
Elementary School
In this science fair project, students create their own miniature salt flats at home.
Create Your Own Miniature Salt Flats!
Fourth Grade
Fifth Grade
This science fair project explores how osmotic pressure forces water through the root up into the plant.
How Does Water Travel Up the Root of a Plant?
Fourth Grade
Elementary School
This science fair project idea investigates the concept that the color of an object is based on the color of light that it reflects.
Light Absorption
Fourth Grade
Fifth Grade
The purpose of this science fair project is to determine the strength of a magnet based on the distance it moves a magnetic toy car.
Can a Toy Car Reveal the Strength of a Magnet?
Fourth Grade
Elementary School
Using a nine-volt battery to create an electrical field around a nail, students make their own electromagnet.
DIY Electromagnet
Fourth Grade
Fifth Grade
In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.
Edge Effect
Fourth Grade
Hard
In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.
Fastest Way to Cool a Soda
Fourth Grade
Easy
In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.
When Seeds Explode
Fourth Grade
Elementary School
The goal of this science fair project is to investigate how distance affects the strength of the magnet. All you need is graph paper, a compass, and a magnet.
How Does Distance Affect the Strength of a Magnet?
Fourth Grade
Elementary School
In this science fair project, students discover how sedimentary layers form as sediments like mud silt and sand settle over time.
How do Sedimentary Layers Form?
Fourth Grade
Elementary School
This science fair project will help students learn about non-vascular plants, such as mosses.
Water and Mosses
Fourth Grade
Second Grade
The purpose of this science fair project is to investigate how salt concentration affects the rate at which brine shrimp eggs hatch.
How Does a Salt Concentration Affect the Hatching of Brine Shrimp Eggs?
Fourth Grade
Elementary School

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