Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

Science fair project which compares the rates of photosynthesis for various light sources. Which type of light will be best for photosynthesis and why?

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

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

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

This science fair project tested various nose cones to determine which would be the most ideal shape for propelling a water rocket.

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

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.

Kids learn how fiber optics work with a dramatic total internal reflection experiment using a fish tank, water, and a laser pointer.

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

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

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

Take a dive into the candy jar with this yummy science experiment.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

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!

This science fair project idea focuses on saturated and unsaturated lipids (fats and oils).

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

Determine how good we are at direct and indirect observation.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

This science fair project idea examines which is the best way to get rid of water stains (stains caused by just water) on fabric.

Ethanol can be used as an alternative fuel! The purpose of this experiment is to identify a starch plant that produces the largest quantity of ethanol.