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What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

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.

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.

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

This science fair project idea focuses on two classes of sugars monosaccharides (fructose) and disaccharides (sucrose or table sugar).

Check out this fun science fair project idea for middle school students to learn about the effects of temperature on the density of a gas such as air.

The objective of this science fair project is to examine the cleanliness of salad preparation techniques.

Explore the relationship between personality traits and birth order effects.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Study structure of the lens found in the human eye and determine whether it is concave or convex. Prepare a ray diagram, formulate hypothesis.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Build a magnetic linear accelerator using a ruler, neodymium magnets, and small metal balls in this fun science fair project exploring magnetic propulsion.

In this design challenge, your child will create a parachute for a small toy using typical household items.

The purpose of this science fair project is to learn which substance best preserves apples. Learn about enzyme interactions in fruit and scientific processes.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

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.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Kids will make a homemade electroscope and explain how it detects static charges through induction in this fun science fair project idea.

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

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

Determine whether magic salt is more effective at melting snow than regular salt. Pour one ounce of salt over the ice cubes, compare the melt downs.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

What is the Doppler Effect, or the Doppler Shift? The purpose of this science fair project is to determine how distance impacts the Doppler Effect.

The purpose of this science fair experiment is to investigate whether the color of your hair affects how much static electricity is carried.

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

What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

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