This science project involves comparing the relative effectiveness of salt, pepper and dehydration in food preservation.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

Science fair project idea that compares number and relative sizes of leaf stomata. Collect leaves of plant species, identify, observe stomata with microscope.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

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

In this fun science fair project idea learn the difference between additive and subtractive color and why they are handled differently.

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?

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

How do cold packs work? Explore endothermic reactions by comparing the temperature change that results from various chemicals added to water to find out!

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

Science fair project idea that measures fuel efficiency in cars. Calculate cost per mile by comparing fuel cost and consumption data.

Determine the efficiency of multi-tasking by comparing how long it takes students to complete different tasks. Collate data, complete Summary Chart.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

In this science project idea learn about working of different types of smoke detectors and find out which one is the most effective for you.

This science fair project explores discover whether the acidity of sour candy is comparable to that of battery acid.

Science fair project which identifies the most effective insulator that you could use to make a winter coat by comparing how well cloth and cotton trap heat.

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

The goal of this science fair project was to examine how different angles of decline affect the tipping point of a vehicle.

This experiment investigates whether there are certain sounds that affect men and women differently

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

This experiment evaluates whether a person's eye color affects their ability to identify colors in low light.

In this science fair project, students will learn how to calculate the formula for the thermal decomposition of potassium chlorate.

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

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

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

In this science fair project, young children discover what happens when two fluids that have different densities get together.

This project compares test subjects' responses to whining and other "attachment" and attention-getting sounds to determine which sounds are most distracting.

This science fair project idea demonstrates that plants give off water.