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Science Fair Project Idea
You know there is sugar in non-diet soda, but just how much sugar? Sure, you can look on the ingredients label, but how do food scientists actually measure the amount of sugar in a solution? They use a simple scientific device called a hydrometer. The hydrometer floats in the solution that is being tested, and the higher it floats, the more sugar there is! In this science fair project, you will use a precision hydrometer to measure the amount of sugar in soda. Read more
FoodSci_p056
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability A precision hydrometer is required. See the Materials and Equipment list for details.
Cost Average ($50 - $100)
Safety Adult supervision is recommended. Use caution, as the hydrometer could break into sharp pieces of glass if dropped.
Science Fair Project Idea
thumbnail Have you ever been swimming at the beach and gotten some water in your mouth by mistake? Then you know that the ocean is very salty. But what about other bodies of water? How much salt do they have compared to the ocean? Read more
OceanSci_p009
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
Ocean currents have a profound effect on the climates of the continents, especially those regions bordering on the ocean. The Gulf Stream makes northwest Europe much more temperate than any other region at the same latitude, and the California Current keeps Hawaii cooler than other land masses at the same latitude. In this ocean science fair project, you will model the behavior of these "rivers" of hot and cold water within the ocean to find out how temperature affects the currents' velocity. Read more
OceanSci_p012
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety Adult supervision is required. Use caution when working with the lighter or matches.
Science Fair Project Idea
thumbnail Some objects float on top of the ocean, and other objects sink to the bottom. Why? Try this eggsperiment to find out! Read more
OceanSci_p003
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- Less Details
Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety Always wash your hands after handling uncooked eggs because they may carry Salmonella.
Science Fair Project Idea
thumbnail Have you ever thought about being stranded on a desert island? How would you find water to drink? What would you need to survive? In this science fair project you'll discover how to turn the ocean into a source of freshwater by using the power of the Sun. Read more
EnvEng_p027
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety Adult supervision required when boiling, stirring, and pouring hot water, or when using a microwave oven or knife. Students who are allergic to red dyes should use beets for coloring.
Science Fair Project Idea
thumbnail How can seawater from the oceans be turned into fresh water that is suitable for people to drink? Through a process called solar desalination! In this science project, you will make a solar desalination apparatus using readily available materials, and a power source that is free. How much water can the device produce, and is it still salty at all? What factors affect how effectively saltwater is turned into fresh water? Read more
EnvEng_p022
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability Some specialty items needed, see Materials list for details. For your convenience a Science Buddies Kit is available for purchase.
Cost Average ($50 - $100)
Safety A hand drill is needed for some steps. Adult assistance is needed for the steps involving a hand drill. All items in the Science Buddies Kit come pre-drilled, eliminating this safety issue.
Science Fair Project Idea
thumbnail The enormous task of cleaning up oil spills in oceans and seas has burdened industry, government, and environmentalists for decades. The cleanup is almost always difficult. It involves great amounts of time, resources, and money to remove the oil from the water, and the cleanup is often only partially successful. Today, however, scientists are coming to the rescue, developing a new technique that combines nanotechnology and magnetism. In this science project, you will test the proposed… Read more
EnvEng_p036
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability Specialty items (ferrofluid and neodymium magnet) are needed for this project. See the Materials and Equipment list for details.
Cost Low ($20 - $50)
Safety Neodymium magnets are very strong. Some have the capacity to interfere or reset pacemakers. Never put a neodymium magnet in your mouth. Always keep them away from computers, credit cards, and other magnetized objects.

Ferrofluids create stains on skin and other materials, so take appropriate measures to keep the fluid contained to the working area.

Science Fair Project Idea
thumbnail To survive, we need oxygen in the air we breathe. Oxygen is also essential for most aquatic organisms, but there is much less oxygen available in water than in air. How much oxygen can dissolve in water? Does the temperature of the water matter? Learn how to measure dissolved oxygen and then see how oxygen concentration changes with water temperature. Read more
EnvSci_p014
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability A dissolved oxygen test kit is needed, see the Materials tab for more details.
Cost Average ($50 - $100)
Safety Adult supervision recommended.
Science Fair Project Idea
thumbnail Have you ever looked in the kitchen cupboard and found a container of tiny white grains, but you were not sure if they were sugar or salt? They look very similar. How could you tell them apart? Well, you know that sugar and salt taste very different. Taste is actually called a property, and properties are used to describe and identify different materials. Properties can also be used to physically separate things. In this science project, you will use different properties to create a way… Read more
BioChem_p046
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability Iron filings and neodymium magnets may need to be specially ordered. See the Materials and Equipment list for details.
Cost Low ($20 - $50)
Safety An adult's help may be needed for using a knife and scissors to cut a plastic bottle. Follow all safety precautions when handling the neodymium magnets; these magnets should never slam together, never pinch fingers or skin, never be swallowed, and should be kept away from all electronic devices. Keep them out of reach of all young children and pets. An adult should help if a stovetop or oven is used.
Science Fair Project Idea
thumbnail Big, puffy, cotton-like clouds, and the bubbles in a pot of boiling water may not seem like they have much in common, but they do—both are formed by a heat-transfer process called convection. Warmed gases and liquids rise, while cooler ones fall, creating currents and mixing things up. Whether making processed foods in a factory or making plastic or metal parts, knowing how to mix up a big tank of hot and cold liquids or gases quickly is important. Engineers must rely on experimentation… Read more
ApMech_p044
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety Adult supervision is recommended while pouring the boiling water.
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