This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

In this science project, learn about soil porosity and measure the percent porosity of sand, silt, and clay.

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

This interactive project invites science fair-goers to participate in examination and recording to demonstrate the importance of firsthand observation.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

This science fair project idea tests the effect of heat- at varying temperatures- on the viability of biological enzymes.

The objective of this science fair project is the compare the rate and efficiency of disaccharide and polysaccharide fermentation by yeast.

This science fair project idea determines whether the diet and taste preferences of humans relate to their personality.

This science fair project idea examines the differences between bottle water, filtered water, and tap water.

This science fair project idea explores what common compounds can be easily separated out in a centrifuge.

Does nail polish really slow the growth of nails? Explore in this science fair project idea.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

This science fair project idea observes products available in the school cafeteria and waste produced by these products.

This science fair project idea discovers the mechanism of laminar flow and encourages technological progress based on this concept.

This science fair project idea's objective is to become familiar with items your family regularly throws in the trash.

This science fair project idea identifies the properties of soap bubbles and invents a new or improved bubble solution.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

Learn how acid-base catalysis affects enzymes and enzymatic reactions in this science project.

In this science fair project, students test how objects float and sink in liquids of different densities.

Observe if dissolved aspirin will help plants grow healthier and faster in this science fair project idea.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

This science fair project idea's objective is to understand the architecture and function of neurons and their key components.

This science project establishes a "breakability index" - basically to assess how much damage is done in different circumstances.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Use applied math to model orbital eccentricity in this cool science fair project for 7th grade.

This science fair project idea measures and compares effects of chemical weathering, specifically carbonation, on different kinds of rocks.

This science fair project idea creates cool new colorful fabric pattern designs and experiments with the mixing of colors.