Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

Discover whether cheap saline solution bottle cleans and disinfects just as well as more expensive kinds formulated with different ingredients.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

Demonstrate the capillary function in plants by adding food coloring to glasses of water. Slice stalks of celery and leafy tops. Compare color of leaves

Free science fair project idea that examines cheating in school-age children. Project involves a task in which children are tested on various tasks.

This science fair project outlines the uses of gold and explores the monetary value of gold.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

This science fair project idea investigates how images are influenced by changes in light.

Plant sunflower seeds , measure height, calculate average height, compare size and weight of heads. Interpret findings in detailed report.

Determine if picking up fallen food in 5 seconds or less prevents the transfer of bacteria from the ground.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

This fun middle school science fair project idea explores the process of respiration and determines whether boys and girls have the same lung capacity.

Use applied math to model orbital eccentricity in this cool science fair project for 7th grade.

This science project examines the effectiveness of various types of laundry detergents on stains trapped on a white handkerchief.

Develop your child's green thumb with this easy planting activity. These plants are guaranteed to grow fast and are "brown-thumb" proofed!

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

Science fair project in which you will stage an election campaign to determine whether people are more swayed by a positive ad or negative ad.

Create a double-slit interference out of cardboard. Produce an interference pattern that demonstrates the wave and particle characteristics of light.

Figure out which fruit has the most vitamin C (ascorbic acid) in this fun science project!

This cool electricity project teaches kids how connecting batteries in series vs. parallel circuits can contribute to different levels of voltage and amperage.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Kids will love making clouds and learning how to make a water cycle model in this fun science fair project idea that explores evaporation and precipitation.

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

Can cells be frozen? This science fair project provides information to answer this question.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

This science fair project idea determines how quickly germs and bacteria spread.

This science activity will help your student explore the changes that occur to transform an egg from raw to soft to hard-boiled.

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