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What's the difference between centripetal and centrifugal force? Students find out by seeing both in action as they conduct this experiment.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

Show your preschooler how to construct this very special planter for Mom. It makes a great pick-me-up, and it's easy for kids to make in a flash!

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

This science fair project idea focuses on the production of oxygen by plants during the photosynthesis process.

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

The purpose of this science project is to determine whether the amount of air in a soccer ball affects how far it goes when kicked.

A great science fair project on solar oven design that helps kids learn about solar power and solar heating.

In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

This science fair project idea models industrial oil spills and determines if they have an impact on wildlife living beneath the surface of the water.

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!

Science fair project that compares tree leaf size and shape based on the leaf's position in the tree. Is their is a noticeable difference between high and low?

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

Determine which kind of rock (igneous, sedimentary, metamorphic) has the greatest reservoir capacity, which is the ability to hold the most oil and natural gas.

Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!

In this science fair project, students use the streak test to tell minerals apart from each other.

This project examines the amount of saltwater required to affect the growth of plants and subsequent effects on growth and development.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

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.

The objective of this science experiment is to evaluate the affects of high and low heat capacity on a material's heat retention ability.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Kids use applied math to build and test a parabolic mirror solar hot dog cooker in this cool engineering science fair project idea for middle school.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

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

This science fair project idea investigates whether plants can survive being frozen.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

This science fair project idea determines if material and tensile strength of different types of skateboard wheels affects the velocity of the skateboarder.

This science fair project idea provide quantitative data about how well the use of ASL ( American Sign Language) works in communicating with babies.