This science fair project idea studies the acidity of rain water and whether the acidity is the same on all rainy days or does it fluctuate.

This science experiment explores why leaves change color in the fall and the role of photosynthesis in leaf coloration.

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.

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

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.

This project will examine the relationship between materials and air resistance.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

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

Observe trends in the properties of writing materials over past 5000 years and extrapolate to future time. Prepare a table that compares writing material.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

Analytical chemists perform chromatography to separate colors into pigments. Test the food coloring used in M&M's and Skittles candy in this fun project!

Determine which seeds are most likely to survive harsh winter conditions (low temperatures).

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

Air resistance is a crucial factor when designing a parachute. In this science fair project, students find what type of material works best as a parachute.

The goal of this science fair project is to demonstrate magnetic forces of attraction and repulsion using a magnet and everyday objects.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

Word color association is just a fancy way to talk about the way we connect colors with words.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Find out whether people within a family tend to have matching fingerprints.

In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.

This science fair project idea investigates the relationship between memory and age.

In this science fair project, students test how objects float and sink in liquids of different densities.

This science fair project idea explores discover whether mixing solutions of equal distances from neutral pH (7) will create a solution close to pH 7.