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Science Fair Project Idea
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
EnvSci_p054
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Time Required Very Long (1+ months)
Material Availability You will need access to a pond or a lake from which to collect water. Students who do not have access to a pond or a lake might want to look at some of the variations, at the end of the project, which use purchased algae cultures.
Cost Low ($20 - $50)
Safety Adult supervision is recommended.
Science Fair Project Idea
Many essential chemical reactions and natural biochemical processes occur in liquid solutions, so understanding the chemical properties of liquid solutions is fundamentally important. This project asks the basic question, how much of a substance can dissolve in water, for three different substances: ordinary table salt, Epsom salts, and sugar. Read more
Chem_p050
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
Science Fair Project Idea
thumbnail Are oranges highest in vitamin C when they are fresh from the tree (or, in a pinch, the grocery shelf)? Does the amount of vitamin C in an orange change over time, after it has been picked? In this science project, you will find answers to these questions by measuring the amount of vitamin C in a solution using an iodine titration method. Read more
Chem_p043
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Time Required Long (2-4 weeks)
Prerequisites Ideally you would have your own citrus tree with ripe fruit for this science project. The second-best option is to use citrus fruit from a store.
Material Availability Titration equipment and supplies are needed. A kit is available at the Science Buddies Store. See the Materials tab for details.
Cost High ($100 - $150)
Safety Adult supervision required. Concentrated iodine is poisonous if swallowed. Read and follow all safety guidelines in the Procedure. More information is available from the iodine [# Link Name="Chem_p044.1" Value="HtmlAnchor" HtmlText="Materials Safety Data Sheet" #].
Science Fair Project Idea
thumbnail Which type of orange juice has the most vitamin C? In this science project, you will learn how to measure the amount of vitamin C in a solution using an iodine titration method. You will compare the amount of vitamin C in three different types of orange juice: homemade, premium not-from-concentrate, and orange juice made from frozen concentrate. Which do you think will have the most vitamin C? Read more
Chem_p044
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Time Required Average (6-10 days)
Material Availability Titration equipment and supplies are needed. A kit is available from the [# Link Name="Chem_p044.7" Value="HtmlAnchor" #]. See the Materials tab for details.
Cost High ($100 - $150)
Safety Adult supervision required. Concentrated iodine is poisonous if swallowed. Read and follow all safety guidelines in the Procedure. More information is available from the iodine [# Link Name="Chem_p044.1" Value="HtmlAnchor" HtmlText="Materials Safety Data Sheet" #].
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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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
This is a straightforward project on glucose metabolism in yeast. You'll grow yeast under aerobic and anaerobic conditions and measure carbon dioxide output to assess metabolic efficiency. Read more
MicroBio_p009
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
Science Fair Project Idea
thumbnail 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 and Equipment 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
thumbnail 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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Time Required Very Long (1+ months)
Prerequisites Having used a voltmeter/multimeter before is helpful, but not required.
Material Availability The microbial fuel cell needs to be special ordered from Science Buddies. See the Materials tab for details.
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
The iodine clock reaction is a favorite demonstration reaction in chemistry classes. Two clear liquids are mixed, resulting in another clear liquid. After a few seconds, the solution suddenly turns dark blue. The reaction is called a clock reaction because the amount of time that elapses before the solution turns blue depends on the concentrations of the starting chemicals. In this chemistry science fair project, you will explore factors that affect the rate of the iodine clock reaction. Read more
Chem_p091
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Time Required Average (6-10 days)
Prerequisites You should be attending or already have taken an introductory chemistry class. This science fair project requires careful attention to detail and will involve some creative problem solving and independent research on your part.
Material Availability You will need to order a chemical kinetics kit online. See the Materials and Equipment list for details.
Cost Average ($50 - $100)
Safety Wear safety goggles when working with all chemicals. Hydrochloric acid is corrosive to hands and eyes. Wear splash goggles and gloves when handling acids.
Science Fair Project Idea
thumbnail Instant cold packs are popular with coaches and parents for treating minor bumps and bruises. The instant cold packs are not pre-cooled—you just squeeze the cold pack and its starts to get cold. So how does it work? In this chemistry science fair project, you will investigate the chemical reaction that occurs in instant cold packs. Read more
Chem_p081
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Time Required Average (6-10 days)
Prerequisites None
Material Availability A few specialty items, including instant cold packs containing ammonium nitrate, are needed.
Cost Average ($50 - $100)
Safety Adult supervision is required. Ammonium nitrate is potentially hazardous, wear gloves and safety goggles when working with it. Avoid contact with skin and eyes.
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