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Industry, Innovation and Infrastructure, Third Grade, Mechanical Engineering Science Projects (20 results)

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Rubber Bands for Energy
Science Fair Project Idea
Scientific Method
If you have ever been shot with a rubber band then you know it has energy in it, enough energy to smack you in the arm and cause a sting! But just how much energy does a rubber band have? In this experiment you will find out how the stretching of a rubber band affects the amount of energy that springs out of it. Read more
There's a Machine in My Toy Box!
Science Fair Project Idea
Scientific Method
"What?! Many of my toys are also machines?" That's right—simple machines! Simple machines are everywhere! Under your feet when you climb stairs, in your hand when you use a utensil to eat your dinner, even in your arm when you throw a ball. Come visit this science fair project and explore the six types of simple machines. Find out how many are hiding under the hinged lid (yes, another simple machine) of your toy box! Read more
Build a Water Clock to Show the Drip, Drip, Drip of Time
Science Fair Project Idea
Scientific Method
What are some of the ways we keep track of time? We have alarm clocks, wristwatches, and cell-phone clocks, to name a few. Just a few hundred years ago, our ancestors did not have any of these conveniences, yet they found ways to tell time. How? By using devices such as water clocks. In this science project, you will follow in the footsteps of early engineers and build a water clock that tracks time for three hours. Read more
Slinking Slinkies
Science Fair Project Idea
Scientific Method
Want to do a project with a toy your parents, or even grandparents, might have played with? Slinkies are fun toys that also make great physics and engineering projects. In this science project you will investigate how changing the angle of an inclined plane affects how the Slinky walks down it. What angle will enable the Slinky to go for the best walk? Read more
Gears-Go-Round!
Science Fair Project Idea
Scientific Method
Music boxes, bicycles, and clocks all have one thing in common: GEARS! You might say that gears make the world turn, since they are in so many mechanical instruments. How do they work and how do you know which gears to use? Find out in this simple experiment. Read more
You Nailed It! Hammering Force for Different Types of Wood
Science Fair Project Idea
Scientific Method
How much force does it take to drive a nail through different types of wood? In this project you'll build a simple test apparatus to swing a hammer reproducibly so you can find out. Read more
Veggie Snap! Modifying Bending Stresses in a Flexible Rod
Science Fair Project Idea
Scientific Method
Have you ever broken a fishing rod? Or seen a treetop bend over and touch the ground (or even snap off) during an ice storm? These are examples of the effect of bending stresses on flexible rods. There are scientists who actually study this phenomenon and discover ways to prevent breakage, which leads to stronger fishing rods, building materials, car parts, and more. In this science project, you'll explore the bending stresses in flexible rods by testing asparagus stalks. Read more
Engineer a Cell Phone Stand
Science Fair Project Idea
Engineering Design Process
Look around you. What types of objects do you see in the room? Furniture, lights, a computer, a fan, pencils, books, etc.? Where did they come from? Odds are you did not build them yourself. You or your parents probably bought them at a store. Before that, they were built in a factory somewhere. And even before that, they were probably designed by engineers. You might think of engineers when you think of complex machines like rockets or huge structures like bridges, but engineers also design… Read more
Understand Shock Levels and Packaging Principles
Science Fair Project Idea
Scientific Method
When you open up your presents on your birthday, you probably don't spend a lot of time admiring the wrapping—you'd much rather see what's inside. It can be the same way with the packaging that products come in, but packaging is important for protecting the things we buy as they make their way from the factory to our homes. How much shock force is produced when a box gets dropped accidentally? What kinds of materials work best to protect products from damage? This project can show you… Read more
Time is Money
Science Fair Project Idea
Scientific Method
How many times have you heard from your parents: "Clean up your room!" or "Don't forget to unload the dishwasher!" By applying principles of industrial engineering and time management, you can speed through your chores and have more time to kick back and relax. Read more
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