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!

This science fair project investigates why the number of visible stars changes from place to place.

Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

This science fair project teaches students about wilting and browning of salad greens.

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

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

Your child will create her own falling snowflakes using white paper and glue them over a tree, so it appears as if they are falling from the sky.

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

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.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

Help your child celebrate the summer and the sun by making a sandy seascape.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.