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Science Fair Project Idea
Plants need nitrogen to build proteins and nucleic acids to grow healthy stems and leaves. Though the Earth's atmosphere is made up of 79% nitrogen, the form of nitrogen found in the atmosphere cannot be used by plants. In this experiment, you will compare plants grown without nitrogen fertilizer to plants grown with nitrogen fertilizer. Read more
PlantBio_p012
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- Less Details
Time Required Long (2-4 weeks)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety Adult supervision recommended during preparation of nitrogen fertilizer solution
Science Fair Project Idea
Have you ever made your own ice cream? If you have, you probably surrounded the ice cream container with ice and rock salt to get the mixture cold enough to freeze. But why does that work? How does adding salt (or other substances) affect the freezing point of water? Find out with this ice-cold science project. Read more
FoodSci_p013
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- Less Details
Time Required Short (2-5 days)
Prerequisites Understanding the concepts of molecular weight and moles.
Material Availability Specialty items are needed. See the Materials tab for details
Cost Average ($40 - $80)
Safety No issues
Science Fair Project Idea
Generating power from mud sounds like science fiction, but it is actually real science, and a promising source of alternative energy. Topsoil is packed with bacteria that generate electricity when placed in a microbial fuel cell. Because such bacteria-laden soil is found almost everywhere on Earth, microbial fuel cells can make clean, renewable electricity nearly anyplace around the globe. They are an up-and-coming technology that scientists and engineers are working on making even more… Read more
Elec_p071
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- Less Details
Time Required Very Long (1+ months)
Prerequisites Having used a voltmeter/multimeter before is helpful, but not required.
Material Availability The microbial fuel cell kit needs to be special ordered from the [# Link Name="Elec_p071.7" Value="HtmlAnchor" #].
Cost Average ($50 - $100)
Safety Be sure to wear the gloves supplied with the kit when handling the microbial fuel cell's electrodes (its cathode and anode). The electrodes are made of a conductive material called graphite fiber and should not be placed near electronics, power plugs, or have their fibers dispersed in the air. The fibers will cause electrical shortages when in contact with electronics.
Science Fair Project Idea
Pennies are bright and shiny when they're new, but become quite dull with time. What causes such a drastic change? Oxygen in the air combines with the copper in the penny to form copper oxide, which makes the penny look dull and dingy. You can make the pennies look like new again by soaking them in water that is corrosive enough to strip off the copper oxide layer. It turns out, however, that the same process that makes the pennies shiny has bad consequences when it comes to copper pipes: it… Read more
Chem_p090
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability A copper test kit and other specialty supplies needed for this project are available through the [# Link Name="Chem_p090.7" Value="HtmlAnchor" #].
Cost Average ($40 - $80)
Safety Adult supervision is recommended.
Science Fair Project Idea
Have you ever planted a garden? It is a real pleasure to see a garden where all of the plants lie in neat rows and are healthy and thriving. Plants need sunlight and nutritious soil to grow and be healthy, right? Not always! Hydroponics is the science of growing plants in nutrient-rich water. Does it work? Try this project and see for yourself! Read more
PlantBio_p045
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- Less Details
Time Required Very Long (1+ months)
Prerequisites None
Material Availability A hydroponics terrarium is required and, for your convenience, can be purchased at the [# Link Name="PlantBio_p045.1" Value="HtmlAnchor" #].
Cost Average ($50 - $100)
Safety Use gloves and safety goggles when handling chemicals. Adult supervision is required.
Science Fair Project Idea
Have you ever experienced heartburn after eating a large, greasy meal? Or have you heard of someone complaining about heartburn pains? It's very common; over 60 million people in the U.S. have heartburn at least once every month. Heartburn pain usually results from stomach acids escaping from the stomach and irritating the esophagus above it. Luckily, there are medical drugs, called antacids, which can help relieve heartburn pain. But how do antacids work, and how effective are they? In this… Read more
BioMed_p010
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety Wear safety goggles and gloves and have an adult help you when handling and working with the artificial stomach acid solution. Hydrochloric acid is corrosive to hands and eyes.
Science Fair Project Idea
Alka-Seltzer® tablets fizz furiously when dropped into water. The moment the tablet starts dissolving, a chemical reaction occurs that releases carbon dioxide gas. Can you make Alka-Seltzer fizz faster or slower by changing the temperature of the water? How big of a difference in the rate of a chemical reaction can temperature make? Read more
Chem_p027
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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 may be needed when working with hot water solutions.
Science Fair Project Idea
You are probably very familiar with the fact that over time, exercise changes your muscles, your lungs, your bones, and even your mindset; but did you know it has an immediate effect on your body's biochemistry? You can see this in the amount of glucose (a type of sugar your body uses for fuel) circulating in your blood. Blood glucose levels change as you exercise. For most people, this is not a big deal. But for top-level athletes in the middle of intense exercise (like a marathon), or for… Read more
HumBio_p039
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Time Required Long (2-4 weeks)
Prerequisites Informed consent must be obtained from participants in this experiment (parental consent must be granted for minors). The experimental design (including consent forms) must be approved by your fair's Scientific Review Committee ([# ProjectGuide Name="Advanced.ScientificReviewCommitteeSRC" Value="HtmlAnchor" HtmlText="SRC" #]).
Material Availability A blood glucose monitoring system is required to do this science project. See the Materials list for details.
Cost Average ($40 - $80)
Safety Follow all safety precautions when using the blood glucose monitoring kit and when handling blood, as described in the Procedure. If somebody who has diabetes wants to participate in this science project, review the safety notes at the beginning of the Procedure before starting.
Science Fair Project Idea
One way to test for the presence of toxic compounds in a water sample is a bioassay. In a bioassay, a living organism serves as a detector for toxins—the same way canaries were used in coal mines to detect invisible toxic gases. In this project, water fleas (Daphnia magna), a freshwater crustacean, are used in a bioassay to monitor water quality. Many variations of this experiment are possible. Read more
EnvSci_p043
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability Specialty items
Cost Average ($40 - $80)
Safety Adult supervision required when collecting sediment samples from parking lot.
Science Fair Project Idea
If you have ever prepared a cup of coffee or tea with sugar, you have probably seen that the grains of sugar quickly dissolve and completely disappear in hot water. But sugar is not the only type of solid that can readily dissolve in a liquid. In fact, there are some types of rocks that can be dissolved by common liquids. It might be hard to imagine large, hard rocks being eaten away by some ordinary fluids, right? But it actually happens all the time! In this geology science project, you will… Read more
Geo_p047
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- Less Details
Time Required Long (2-4 weeks)
Prerequisites None
Material Availability Small limestone rocks are needed to do this science project. See the Materials and Equipment list for details. Note: The listed time required to do this science project includes shipping time.
Cost Average ($50 - $100)
Safety No issues
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