Third Grade Science Experiments (Page 46)

The Physics of Cheating in Baseball

Science Fair Project Idea

Scientific Method

Do corked bats really hit the ball further? What about other materials? Here's a project to find out. Read more

Understanding Lactose Intolerance

Science Fair Project Idea

Scientific Method

What do pizza, milk shakes, and ice cream sundaes have in common, besides being delicious and loaded with calories? You might be surprised to learn that these foods, because they contain dairy products, cannot be eaten by the majority of people around the world. Dairy products contain the sugar molecule lactose, and the majority of people on the planet slowly begin to lose the ability to digest lactose after the age of 2. In this human biology and health science fair project, you will… Read more

Which Is the Better Insulation Material?

Science Fair Project Idea

Scientific Method

You've probably noticed that the price of gasoline has been going up and up lately. Heating oil will probably cost more this winter than last winter, too. Using good insulation material is one way to conserve energy and save money. What insulation materials work better than others? Read more

Which Materials are the Best Conductors?

Science Fair Project Idea

Scientific Method

Electricity powers many of the devices we use every day, from lights to video games and computers. Engineers have to use certain materials to make electrical devices work. In this experiment, you will find out which materials let electricity flow through them (conductors) and which ones prevent electricity from flowing through them (insulators). Read more

Why Are Teens Stressed?

Science Fair Project Idea

Scientific Method

What causes the most stress for teenagers? Is it school? family relationships? peer pressure? worries about the future? Design a survey to find out what contributes to teens' stress levels. Possible variations include: How do teenagers deal with stress? Are today's teens more or less stressed than their parents were as teenagers? Were the sources of stress the same for your parent's generation or different? (Idea from De Biasi, 2003) Read more

13 Boat and Submarine Science Projects and Experiments

Blog Post

Investigate the physics of boat design, floating, sinking, and more with boat and boat design science and engineering projects, including DIY sailboats, submarines, and underwater ROVs. Boat and Submarine Science Experiments For students fascinated with boats, submarines, and other water vehicles, science projects can make great hands-on explorations. These projects can be fun in summer months or for a school science project or the science fair.… Read more

A Juicy Project: Extracting Apple Juice with Pectinase

Science Fair Project Idea

Scientific Method

Do you know why enzymes are oftentimes called the workhorses of biochemistry? It's because they can speed up a wide variety of chemical reactions, and chemists and biologists use enzymes to do all kinds of jobs. In this project, pectinase, an enzyme frequently used in the food industry, will be used to extract juice from apples. Read more

A Model of Gravity in Our Solar System

Science Fair Project Idea

Scientific Method

Why do the planets orbit the sun without flying off into space? Do they move in perfect circles or do their orbits take a different shape? And how could you possibly do a science project about any of this—you can't do an experiment with the planets! However, you can build a model of our solar system that demonstrates the concept of gravity, using balls of different sizes to represent the sun and planets. Watch the summary video for an excellent introduction to the model. Think about how… Read more

Aerodynamics Science Projects: Planes, Rockets, Kites, Drones & More

Blog Post

Explore aerodynamics with science projects related to planes, helicopters, drones, rockets, and more! Aerodynamics Sciences Projects and Experiments Students interested in the science of flight or the design of things like planes, rockets, and helicopters, can experiment with science projects like the ones highlighted below. These experiments cover important principles of aerodynamics, aeronautics, and physics, including the four forces that act… Read more

Agrivoltaics: What Crops Grow Best Under Solar Panels?

Science Fair Project Idea

Scientific Method

We need farms for food, and we need solar panels for renewable energy. What if we could combine the two? Find out if certain crops can grow well under the partial shade of solar panels in this agrivoltaics science project. (Note: you do not need access to real solar panels to do this project. Any source of shade will work.) Read more

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