This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

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.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

Get a better understanding of water content by dehydrating carrots.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

In this fun experiment, we'll find out how color affects heat absorption!

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

Examine the effect of pressure on carbonation in soda.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!