5th - 7th Grade Engineering and Science Inquiry Activities : Page 7

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

Find out whether matte or shiny nail polish lasts longer.

This science fair project idea explores substances that cause a bubble to last longer.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

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

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

This science experiment tests if dog saliva can really help heal wounds.

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.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

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.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

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

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.