Check out this cool science fair project idea to explore the relation between onions and eyes and how to prevent eyes from tearing while cutting an onion.

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

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

The objective of this science fair project idea is to determine whether frozen vegetables have more nutrients than canned vegetables.

Ethanol can be used as an alternative fuel! The purpose of this experiment is to identify a starch plant that produces the largest quantity of ethanol.

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

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

This science fair project idea measures physical dexterity as a function of temperature.

The purpose of this science project is to investigate which will grow larger plants: compost, soil and Miracle - Gro, a mixture of both.

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

This project examines the affect of temperature on viscosity and surface tension of different liquids.

The purpose of this science fair project is to investigate which food wrapping works best to keep refrigerated and non-refrigerated foods from spoiling.

This science fair project idea investigates food preference of birds.

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?

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

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

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