Test ability to distinguish between natural and artificial aromatherapy oils. Select fragrance, natural and synthetic sample. Volunteers state preference.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

This project uses toy cars to determine how friction and gravity affect cars and braking.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

Demonstrate Newton's laws of motion by examining the relationship between mass, force, and acceleration during free-fall.

This science fair project examines how seeds hitchhike on animals and clothing.

Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

Check out this fun science project idea to explore different types of starches and learn how removing starch affects the quality and taste of food.

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.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

This science fair project idea uses the process of chemical weathering to change a mineral.

In this science fair experiment, kids will use the acid test to discover how to tell one mineral from another.

This experiment will test whether people are better auditory or visual learners and if there is a link between gender and either of these learning types.

This science fair project idea tests whether tall people have the ability to swim faster than people of average and shorter heights.

Find out whether matte or shiny nail polish lasts longer.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

This science fair project idea explores which fruit molds the fastest.

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

Kids make strong bubbles to investigate the effect different additives have on bubble life in this cool science fair project idea.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

Cleaning can be a chore, but not with this sudsy experiment!

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

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

Test your friends to find out if you can replicate the placebo effect's incredible results.