Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Are you ready to pilot your own airplane? Well, then take to the skies with this high-flying project!

Determine which metal has the highest rate of conductivity.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

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

This project will explore whether people are emotionally susceptible to suggestions of both humor and sorrow.

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.

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

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

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

In this science fair project, students will use four different household objects to see which ones form the most or best crystals.

This project will examine the relationship between wind velocity and direction and the distance a baseball travels.

This science fair project explores different types of endangered frogs, and why some are endangered while others are not.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

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.

Examine the influence of the phase of the moon on moisture capillarity in garden soil. Measure and record the depth at which water is first detected.

Store bowls of fresh fruit in differently lighted environments. Contrast freshness based on appearance.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

This science fair project idea tests whether it is true that humans are in the morning than later during the day/night.

Science fair project that creates fog using bottles of hot and cold water.

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

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

Check out this fun science fair project idea to explore how building on different types of soil affects the relative stability of buildings in an earthquake.

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

This science experiment explores why leaves change color in the fall and the role of photosynthesis in leaf coloration.

Do you think heat can affect a plant's growth rate?

In this fun guessing game, your child uses his sense of smell and taste to figure out what is in the container. Here's how to play:

In this project students determine which instruments composers use to create birdsongs and birdcalls in classical music.

Science fair project that determines how we can change potential energy into kinetic energy.