Search 4th Grade Science Science Projects

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

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

This science fair project idea experiments with spinning color wheels and optical illusions.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

This science fair project idea explores whether talking to a plant will help it grow.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

This science fair project idea produces varying pitches of sound.

Find out whether packaged seeds actually do expire in this new science fair project idea.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

This science fair project idea produces sounds by creating vibrations using different objects.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

In this science fair project, students make their own rain gauge to measure rainfall.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.