The actual factors affecting friction may surprise you! Learn about the coefficient of friction and put some trigonometry into practice in this science project.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

This science fair project idea explores whether cats can be trained in the same way that dogs can.

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.

This study observes plants, insects and an animal living in proximity to a known source of EMF.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This science fair project idea explores alcoholic fermentation at work by making your own soda.

In this science fair project, students examine how the flow rate in a stream affects the growth of aquatic plants.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

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

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

Science fair project that helps visualize how the human brain functions by constructing a model of a brain.

Determine if each hemisphere specializes in dealing with specific functions. Include illustrations of the brain, it hemispheres.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Explore the effect of wind speed on the burning rate of a candle.

This experiment observes inattentional blindness and investigates whether certain age groups or genders are more likely to demonstrate this phenomenon.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Explore how you can achieve magnetic levitation with the Meissner Effect! This cool science project explains formation and applications of a superconductor.

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

Science fair project which examines how stopping a tomato's ripening process using the enzyme ethylene effects the tomato plant and its reproduction cycle.

Learn how to convert gravitational potential energy into mechanical energy in this fun science fair project idea.

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

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

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Kids love the dramatic Mentos and Diet Coke experiment conducted in this awesome science fair project.

This experiment will explore whether adding different substances to a gel affects its strength.

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

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

Science fair project that explores the variety of webs that spiders weave and collect specimens for identification.

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.