Showing Results for how when : Page 7

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

Every time a sound is produced it emits a sound wave. This experiment demonstrates how sound travels, using nothing more than a spoon and a string!

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, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

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

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

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

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

Discover whether a metal will expand under hot water.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

This science fair project idea explores whether white light can be separated into different colors.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

Test whether plants can grow without sunlight and water.

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

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

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