How do organic materials become soil? This science experiment measures what materials biodegrade.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

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

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

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

Explore if planting seeds in a certain direction will affect how fast it germinates.

In this project, the affect of acid rain is simulated by the acid, vinegar.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

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.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

Do you think heat can affect a plant's growth rate?

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

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 idea examines whether plants are still able to grow normally if they are turned upside-down.

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

This science fair project idea explores whether talking to a plant will help it grow.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

This science experiment has students test whether a snail moves faster on concrete or dirt.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

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

This biodiversity project examines the biodiversity in your own backyard.

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 determines if crystals will absorb food dye and if colors will mix by the process of diffusion.