How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

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

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

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 demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

This science fair project idea examines the reason boats are shaped and engineered.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

Determine if gender affects the ability to identify different smells.

Using a toy race car kids create a visual model of the Doppler Effect.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

In this fun activity, your child will create their very own solar oven to bake s'mores!

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Find out whether a longer airplane will fly farther or a wider paper airplane.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Construct and experiment with a periscope using reflected light rays to gather an image.

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

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

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

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

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

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

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

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

This science fair project idea investigates if webbed feet help a duck (and others) swim.