Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

In this experiment a spectrometer is used to analyze the light emitted by burning ion solutions.

Explore the relationship between personality traits and birth order effects.

Why are some pennies shiny and others dark and dull? Find out with this cleaning copper coins experiment, which transforms dark pennies to bright ones.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

Compare ability of selected materials to block UV-A radiation. Shine black light though glass at detecting beads underneath. Note color intensity.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

This experiment will explore how manipulating a graph of historical information might reveal new information about data.

This science fair project examines the vein structure (venation) of leaves in order to determine the class of the plant sample.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

This project analyzes people's emotional responses to images in painting vs similar images in photographs.

The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

Engineers in training can get started with this simple wheel-and-axle construction activity.

The objective of this project is to evaluate whether a top will spin at different rates during different phases of the moon.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

This science fair project idea studies the acidity of rain water and whether the acidity is the same on all rainy days or does it fluctuate.

This science fair project idea compares the mass and density of objects.

This experiment uses Rosenberg's Self Esteem Scale to evaluate if there is a correlation between family size and self esteem.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.