Fourth Grade Science Projects (Page 4)

2022 Paper Ball Run Challenge

Science Fair Project Idea

Engineering Design Process

In this engineering challenge, you will build a ball run from paper and tape, but there's a twist! You want to make your ball run as slow as possible. How long can you make it take for the ball to get from the entrance to the exit? You can see how other students have tackled this and other annual Science Buddies Engineering Challenges. Read more

Bottle Rocket Blast Off!

Science Fair Project Idea

Scientific Method

3... 2... 1... 0— blastoff! In this science project, you will use a bottle rocket launcher to launch your own bottle rocket. You will load it with water and pressurized air, make several launches, and find out what makes your rocket soar the highest. Read more

Crazy Crystal Creations: How to Grow the Best and the Largest Crystals

Science Fair Project Idea

Scientific Method

Crystals come in all different shapes and sizes. However, the purest and cleanest crystals are usually also the ones that grow to be the largest in size. In this science fair project, you will compare the size and shape of crystals grown in three different temperature conditions: room temperature, in the refrigerator, and in an ice bath. With just water and borax, a household cleaning product, you can discover the best recrystallization method for growing large, pure crystals. Read more

A Battery That Makes Cents

Science Fair Project Idea

Scientific Method

Batteries are expensive, but you can make one for exactly 24 cents! In this experiment, you will make your own voltaic pile using pennies and nickels. How many coins in the pile will make the most electricity? Read more

Making and Testing Edible Rice Paper

Science Fair Project Idea

Scientific Method

If you love cooking, decorating cakes, or making edible table decorations, this is a project for you! You will compare three different recipes for rice paper and discover the recipe that works best for your application! Read more

Paper Chromatography: Is Black Ink Really Black?

Science Fair Project Idea

Scientific Method

Have you ever looked at sunlight through a prism? If so, you know that the prism can separate the sunlight into many different colors of light — a rainbow. Like sunlight, chemical mixtures can also be broken into their component parts. One way of doing this is a simple technique called paper chromatography. What do you think you will see if you use paper chromatography to look at the components of black ink? Is black ink just black? Find out for yourself! Read more

What's the Best Exposure Time for Sun Print Paper?

Science Fair Project Idea

Scientific Method

Did you know you can make paintings or drawings using sunlight? You can do it by leaving objects on top of special sun print paper until the light creates an imprint of the objects. How does this process work? How long should you leave the paper in the sun to get the best result? What does any of this have to do with the process of making the microchips that power our phones and computers? Try this project to find out! Check out this page for more science projects related to this process. Read more

Set Your Table for a Sweet and Sticky Earthquake Shake

Science Fair Project Idea

Scientific Method

Have you ever been in an earthquake? What did it feel like? Did you jiggle back and forth? Up and down? Was there a jolt? Or a rolling motion? Come build a house Hansel and Gretel would love to eat, a special table to shake it on, and see how different soil types can amplify shaking. Read more

What's the Best Container for Elephant Toothpaste?

Science Fair Project Idea

Scientific Method

Check out this video from former NASA engineer Mark Rober, where he sets out to reclaim his title for the world's largest and tallest elephant toothpaste reaction. In the video, he experiments with different container shapes and sizes to determine which will result in the most spectacular reaction. You can turn this into a science project of your own! How do differently sized or shaped containers affect the foaming reaction? Can you find an optimal container that makes the reaction go the… Read more

Liver Stinks!

Science Fair Project Idea

Scientific Method

Sometimes science can be really messy or use pretty disgusting ingredients. That is what it takes to understand how the world works, even if the experiment isn't pretty. Do you like chemical reactions that stink and ooze foamy bubbles? Do you think it sounds fun to make a super gross liver smoothie? Then this is the experiment for you! Read more

Fourth Grade Science Projects (306 results)

Explore Our Science Videos