Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

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

Consult astronomers for opinions and advice. Devise a mathematical argument regarding the probability of other planets supporting extra-terrestrial life.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

Find out whether matching resonant frequencies can cause objects to shatter.

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.

Free science fair project idea examining how different types of water affect plant germination and growth.

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

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.

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.

This science fair project ideaexplores whether cooking food destroys potential vitamin levels.

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.

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.

How do crystals form? In this science fair project, students will use three different saturated solutions to see how different minerals form crystals over time.

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.