3rd - 8th Grade Science Projects Activities : Page 5

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Find out whether a longer airplane will fly farther or a wider paper airplane.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

The goal of this project is to create an exciting topographical map out of dough.

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

In this science fair project, students create their own miniature salt flats at home.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

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.

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

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

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

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

This science fair project idea determines the most effective method of preserving food.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

How powerful is the reaction between baking soda and vinegar? Find out here!

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.

This science fair project idea produces varying pitches of sound.

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