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Elementary School Science Projects (737 results)

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Study the Effect of Fertilizers on Algal Growth
Science Fair Project Idea
Scientific Method
You might not know it, but a lake without algae would be a very dull place. If there were no algae, there would be no small animals feeding on the algae, and there wouldn't be any fish eating the small animals that eat the algae. You might conclude that since some algae is good, more algae is even better, but algae growth has a down side. If there is too much algae, they can deplete the oxygen in the water, killing off other species in the water. What is one culprit that leads to algal growth?… Read more
Do You Love the Taste of Food? Find Out if You Are a Supertaster!
Science Fair Project Idea
Scientific Method
Are you really picky about food? Or do you know someone who is? It might be because he or she is a supertaster! To supertasters, the flavors of foods are much stronger than to average tasters. Are you a supertaster? Find out with this tongue-based science fair project! Read more
Use the Sun's Energy to Heat Your Own Water
Science Fair Project Idea
Scientific Method
Isn't it nice to take a nice, hot shower or bath after a long day of playing outside? But have you really thought about how the hot water in your shower or bath gets hot? Sure, the water heater in your house gets it hot, but what makes the water heater work? Water heaters are powered by natural gas or electricity. But are there any other ways to heat water? What about using the Sun? In this science fair project, you'll give it a try by capturing energy from the Sun to heat water. Read more
A Puzzling Parallax
Science Fair Project Idea
Scientific Method
Do you enjoy going stargazing? In a good location on a clear night, you can see a huge number of stars twinkling in the night's sky. Have you ever wondered how far those stars are from us? Ancient astronomers actually discovered a way figure this out, measuring the distance from Earth to faraway stars. How did they do it without modern technologies? In this astronomy science project you will find out by exploring the link between the distance of an object and perspective (also known as… Read more
Can Beeswax Wraps Replace Plastic Wraps?
Science Fair Project Idea
Scientific Method
Do you ever use plastic wrap to cover a container? Did you know that it is made of plastic, which significantly contributes to the amount of waste in our landfills? There are many alternatives to plastic, and one popular product is beeswax wraps. Are beeswax wraps a suitable replacement for plastic wrap? Find out in this experiment! Read more
Primary Productivity and Plankton
Science Fair Project Idea
Scientific Method
Have you seen plankton? I am not talking about the evil villain trying to steal the Krabby Patty recipe from Mr. Krab. I am talking about plankton that live in the ocean. In this experiment you can learn how to collect your own plankton samples and see the wonderful diversity in shape and form of planktonic organisms. Read more
Pop Goes the Metal: How Temperature Affects Snap Time of a Jumping Disc
Science Fair Project Idea
Scientific Method
Jumping discs can be a fun toy to play with, and with their sudden POP!, they can even be a good way to startle people who have never heard them before. Jumping discs use a neat trick to jump. They are made of two different types of metal, and these metals expand when they heat up (or shrink when they cool down), but not by exactly the same amount. In this science project you will explore how temperature affects the reactions of your jumping discs— and how to get the timing right if you… Read more
What's the Point of Boiling?
Science Fair Project Idea
Scientific Method
You know that water can exist in three separate phases: solid (ice), liquid (water), and vapor (steam). To change from one phase to another, you simply add (or remove) heat. When water boils, what happens to molecules (for example sugar or salt) that are dissolved in the water? Do they boil off too, or do they stay behind? Read more
Leaky Clues to Dam Design: How Reservoir Height Affects Hydroelectric Power Production
Science Fair Project Idea
Scientific Method
It's hard to believe that the same water that you use every day to quench your thirst, cook with, bathe in, swim in, and wash your clothes and dishes, is capable of another trick—it can make electricity! Electricity can be generated through the flow or through the fall of water. A big, fast-flowing river, for instance, contains a lot of moving energy that provides enough pressure to turn the blades of a turbine and run an electric generator. This same pressure can also be created though… Read more
Comparing Different Types of Irrigation Systems
Science Fair Project Idea
Scientific Method
With heat waves impacting the world globally, many gardeners, farmers, and scientists are turning to passive irrigation systems that reduce fossil fuel emissions while keeping plants well-watered and alive in the sweltering heat. In this science experiment, you will compare and contrast the effectiveness of passive irrigation systems compared to traditional surface irrigation systems and their impact on overall plant growth. Read more
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