4th Grade Science Projects Activities : Page 5

This science fair project idea investigates the difference in reaction times between boys and girls.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

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

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

This science fair project idea examines whether boys and girls differ in reflexes.

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

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

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

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This project determines what category of person is most likely to be ticklish.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

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

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

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

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

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 explores how osmotic pressure forces water through the root up into the plant.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

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

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.

Test whether plants can grow without sunlight and water.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

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

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.