Search 4th Grade Science Projects: Page 4

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

This science fair project idea determines what household items are good conductors of electricity.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

This science fair project idea determines which method of hand cleansing is the most effective.

This science fair project idea examines which type of insulation holds in the most heat.

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

This science fair project idea provides evidence that air is everywhere and takes up space.

This science fair project idea explores the different properties of matter.

This science fair project idea produces varying pitches of sound.

This science fair project idea determines what household items are good conductors of electricity.

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

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

This science fair project idea determines if the color of light affects the growth of plants.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

This science fair project idea identifies trees using a dichotomous key.

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