Fourth Grade Science Projects (Page 9)

The Moon and Tides

Science Fair Project Idea

Scientific Method

Have you ever wondered what causes the tides in Earth's oceans? In this astronomy project, you will discover the answer for yourself! You will investigate how the Sun and Moon control tides in Earth's oceans. Read more

The Paper Plate Hovercraft

Science Fair Project Idea

Scientific Method

You can make a very simple hovercraft with a stiff, disposable plate-a pie plate should work well-and a balloon. Glue a square of cardboard in the center of the bottom of the plate. Make a small hole through the center of both of these layers. Enlarge the hole slightly with a pencil. Push a balloon through the hole so that the opening is on the front side of the plate, and rest of the balloon sticks out from the back. Blow up the balloon, then set the plate down (balloon side up). What… Read more

Yeasty Beasties

Science Fair Project Idea

Scientific Method

While looking at a package of dry yeast it is hard to believe that the package has organisms in it that are alive. But add the right ingredients and presto, the mixture becomes a bubbly, oozing, mess of life! What are the right ingredients? What does that yeast need to become active? Do this science project and figure it out for yourself! Read more

Volleyball Machine Challenge

Science Fair Project Idea

Engineering Design Process

Can you build a volleyball machine? It will need one part to launch a ping pong ball over a net and another to return the ball. How many back-and-forth volleys can you get before the ball touches the ground? Looking for inspiration? You can see how other students have tackled this and other annual Science Buddies Engineering Challenges. Teachers, lesson plan versions of this challenge are available. Read more

Which Cheesecake Baking Method is the Best?

Science Fair Project Idea

Scientific Method

Since ancient times, nothing has said "special" and "dessert" quite like cheesecake! The Romans even sacrificed their form of cheesecake, called libum, in religious ceremonies. Modern cheesecakes are more likely to be eaten at parties and at restaurants than used as sacrificial offerings, but no matter how they're enjoyed, all cheesecakes require some finesse in their baking and mixing to avoid common cheesecake faults, like cracking, collapsing, or failure to rise. In this cooking and food… 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

Comparing the Sweetness of Sugar & Sugar Substitutes

Science Fair Project Idea

Scientific Method

Cake, cookies, pie, ice cream, hot chocolate, lemonade... Yum! What do all these delicious treats have in common? Sugar. In addition to providing sweetness, sugar adds bulk, flavor, and structure to foods. But is it necessary to add sugar to achieve sweetness? Can the same sweetness be achieved using sugar substitutes like artificial or natural sweeteners? In this project, you will test sugar and sugar substitutes and compare the sweetness of each in relation to sugar. In the end, your day will… Read more

How Much Do Different Pet Species Eat Compared to Each Other?

Science Fair Project Idea

Scientific Method

Are you in charge of feeding your family pet? How much food do you think your pet eats compared to other kinds of pets? After adjusting for your pet's body weight, you might be surprised how it will compare to other kinds of pets. What type of pet do you think will eat the most for its body weight? Read more

How Well Do Disinfectants Work?

Science Fair Project Idea

Scientific Method

Germs are everywhere! We try and clean our home with disinfectants, but do we really get rid of all the germs? Find out with this "hands-on" experiment. Read more

How Do the Seasons Change in Each Hemisphere?

Science Fair Project Idea

Scientific Method

On a rainy day, do you ever wonder what the weather is like on the other side of the planet? Different regions around the globe can have very different seasonal weather patterns. In this experiment, you can test if these seasonal variations are related to which hemisphere each region is located in. Read more

Fourth Grade Science Projects (307 results)

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