Determine the differences between various bicep exercises, both in terms of how much muscle exertion they create and how they affect your heart rate.

Demonstrate the relationship between mass, volume and density. Measure displaced water, and weigh object to calculate mass and density.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

Research overview of architecural acoustics. Design and build a whispering wall from wood or plastic. Test which materials work best.

This science fair project investigates why the number of visible stars changes from place to place.

Research fruits and their ripening stages, follow and document the different stages. Analyze what causes fruit to continue ripening after being picked.

Determine the effect of homework on academic performance. Collect grade info at the end of a semester, determine correlation between grades, amount of homework

The objective of this science fair project idea is to explore which brands of "anti-fade" shampoos work the best to keep hair color looking fresh.

Find out whether matte or shiny nail polish lasts longer.

Science fair project which uses a camera to observe the surface of a balloon in the moment of its explosion.

This experiment will explore whether adding different substances to a gel affects its strength.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

This experiment will determine how different kinds of light affects the strength of bakerâs yeast.

The objective of this science fair project is to observe the properties of friction and apply this knowledge to search for a near-frictionless surface.

Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

Determine whether the application of Febreeze will lower the bacterial count.

Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.

Get a cool and easy science fair project idea which helps high school students in understanding concepts behind the working of a microphone.

Get a cool science fair project idea for middle schoolers on the effect of adding sugar to the growth of green plants.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

This science fair project idea investigates if fats add to the flavor of food.

Determine how wind speed affects the stability of a kite and the ease of getting it into the air.

Are red apples really sweeter than green apples? The objective of this science fair project is to test the theory with quantitative evidence.

This social science experiment assesses whether the timing of peak mental performance shifts from afternoon to morning as we age.

The goal of this science fair project is to demonstrate current methods of detecting counterfeit money, in particular counterfeit detection pens.

The aim of this science fair project is to examine the differences between brands of bottled water and analyze consumer preferences through a taste test.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This science fair project idea explores whether the types and brands of faucet filters are relevant to their performance.