This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

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

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Word color association is just a fancy way to talk about the way we connect colors with words.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

This science fair project idea provides evidence that air is everywhere and takes up space.

This project investigates the affect of storage temperature on microwave popcorn.

This science fair project idea produces sounds by creating vibrations using different objects.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

Explore scientific concepts with this experiment that introduces kids to the scientific method!

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

This project determines what category of person is most likely to be ticklish.

Examine the effect of pressure on carbonation in soda.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

This science experiment tests if dog saliva can really help heal wounds.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

This science fair project idea identifies trees using a dichotomous key.

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.