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Science Fair Project Idea
Water is a valuable resource, and water shortages are a serious problem in many parts of the world. The problem can be made worse by people who waste water; for example, by watering a garden or using sprinklers on their lawn (or a farmer taking care of an entire field) when it has rained recently or the soil is already moist. How can you help conserve water and prevent such waste? One way is to build an electronic soil moisture sensor. This project will show you how to build a circuit that… Read more
Elec_p066
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Time Required Average (6-10 days)
Prerequisites Familiarity with using a solderless breadboard, or willingness to learn.
Material Availability Specialty electronics items are required. A kit is available from the . Time required includes shipping for the kit.
Cost Average ($50 - $100)
Safety Short circuits can get very hot. Double-check all of your wiring before you connect the 9 V battery.
Science Fair Project Idea
Have you ever seen a cat chase a laser pointer or a flashlight beam? What if you could make a robot do that? In this project, you will build a robot that can automatically drive toward a bright light source. The robot uses a simple electronic circuit to track light, so there is no computer programming required! You can also do three other robotics projects using the same kit of parts, so this is a great way to get started with robotics before moving on to more advanced projects. Read more
Robotics_p022
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- Less Details
Time Required Average (6-10 days)
Prerequisites You will need to know how to use a breadboard to do this project. See the Science Buddies reference [# ProjectGuide Name="Breadboard.Tutorial" Value="HtmlAnchor" #] if you have not used a breadboard before.
Material Availability A kit is available in the .
Cost High ($100 - $150)
Safety Short circuits can get very hot and present a burn hazard. Be careful to follow the directions in the Procedure in order to avoid short circuits when building your robot.
Science Fair Project Idea
Sometimes engineers get ideas to build robots from animals in nature. There are robot dogs, robot snakes, robot birds, robot cheetahs, and even tiny robotic insects! In this science project, you will build a robot insect of your own. The robot will automatically drive toward a light source, mimicking a behavior called phototaxis, seen in some insects. You will build your own robot and then make adjustments so it can reliably drive toward a light. Read more
Robotics_p012
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- Less Details
Time Required Average (6-10 days)
Prerequisites none
Material Availability A kit containing all the electronics parts needed for this project can be found in the .
Cost Average ($40 - $80)
Safety No issues
Science Fair Project Idea
If you want to get your friend's attention at a crowded sporting event with lots of people cheering, you need to shout. If you're trying to do the same thing in a quiet library, a whisper works. The detection limit for each of our senses depends on the amount of "background" stimulation that is already present. This project uses an LED control circuit to investigate detection of changes in light levels. Read more
Elec_p039
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Time Required Short (2-5 days)
Prerequisites Understanding of Ohm's Law and an understanding of logarithms. Note: the biggest expense is a powered, solderless breadboard, which can be used for future explorations in electronics.
Material Availability Specialty items
Cost Very High (over $150)
Safety No issues
Science Fair Project Idea
Have you ever wondered how your clothes get their color? Dyeing textiles is a very complicated process and involves a lot of chemistry. Not only are the properties of the dye and fabric important, but the dyeing conditions also have to be exactly right to get optimal color adsorption. Curious about how it works? In this science project, you will color wool with Kool-Aid® and explore the chemistry of dyeing. Read more
Chem_p106
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- Less Details
Time Required Average (6-10 days)
Prerequisites Knowledge of basic chemistry is helpful as well as a good understanding of mathematical operations such as algebra and simple linear regression.
Material Availability This project requires special electronic parts. A kit is available at the . Estimated time required includes time for shipping the kit. For data analysis, a spreadsheet program, such as Google SheetsTM or Microsoft® Excel®, is helpful.
Cost High ($100 - $150)
Safety This project requires working with boiling water. Make sure to take precautions to prevent burns from the hot liquid.
Science Fair Project Idea
How easy is it for you to walk along and follow a line that is painted on the ground? Simple, right? You might be able to follow a line without giving it much thought, but how could a robot do that? In this project, you will build your own automatic line-following robot that can race around a track that you create. This technology has plenty of real-world applications—maybe one day you could help design self-driving cars! Read more
Robotics_p023
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- Less Details
Time Required Average (6-10 days)
Prerequisites You will need to know how to use a breadboard to do this project. See the Science Buddies reference [# ProjectGuide Name="Breadboard.Tutorial" Value="HtmlAnchor" #] if you have not used a breadboard before.
Material Availability A kit for this project is available from the .
Cost High ($100 - $150)
Safety Short circuits can get very hot and present a burn hazard. Be careful to follow the directions in the Procedure in order to avoid short circuits when building your robot.
Science Fair Project Idea
Solar cells are popping up on rooftops everywhere these days and are a model for clean, renewable energy. Did you ever look at those solar panels and wonder how we can get electricity produced by solar cells when the sun is not shining? It is a great question because solar panels do not produce electricity when it is dark outside. One strategy to overcome this challenge is to store the energy produced by solar cells during the day in the form of a fuel that can be used at a later time. In… Read more
Chem_p099
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Time Required Average (6-10 days)
Prerequisites Completion of a basic chemistry class is recommended before trying this science project. You should also know something about circuits, or use the [# ProjectGuide Name="Advanced.ElectronicsPrimerIntroduction" Value="HtmlAnchor" HtmlText="Science Buddies Electronics Primer" #].
Material Availability A number of specialty items are required. For your convenience a kit is available for purchase from the .
Cost Very High (over $150)
Safety Adult supervision is recommended. Use caution when connecting the four 9V batteries. Ensure that the wires/connectors do not come in contact with each other to cause a short or the batteries will become VERY hot and can possibly cause burns. Cobalt nitrate can cause skin and eye irritation. It is recommended to wear disposable gloves when handling cobalt nitrate.
Science Fair Project Idea
Have you ever gone to pour yourself a cup of milk and all you get is milk clumps? What happened to the milk is called coagulation, which is the mechanism that occurs when proteins in the milk clump together. While you do not necessarily want this in your milk, without coagulation (or curdling), there would not be any cheese or yogurt, which is why it is a very important process in the food industry. But what makes milk curdle? In this science project you will use pineapple juice to curdle milk… Read more
BioChem_p032
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Time Required Long (2-4 weeks)
Prerequisites A familiarity with basic chemistry and experience with simple electronics would be helpful, but is not absolutely required.
Material Availability For your convenience a kit is available for this project from the . Time required includes shipping for the kit. For data analysis, a spreadsheet program, such as Google SheetsTM or Microsoft® Excel® is helpful.
Cost Average ($50 - $100)
Science Fair Project Idea
Your drinking water probably started out brown and muddy. Are you surprised? Maybe you were picturing it flowing from a clean mountain spring instead? All over the world, including in 68% of American homes, people get their drinking water from rivers, lakes, and other surface waters. This water is filled with dirt, debris, and other contaminants as it travels hundreds of miles. So, how does your drinking water go from brown and muddy to crystal clear? Often, flocculants—substances that… Read more
EnvEng_p039
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- Less Details
Time Required Average (6-10 days)
Prerequisites Some basic knowledge in chemistry would be helpful, but is not necessary.
Material Availability This project requires special electronic parts. See the Materials and Equipment list for details. For data analysis, a spreadsheet program, such as Google SheetsTM or Microsoft® Excel®, is helpful.
Cost Average ($50 - $100)
Safety No issues
Science Fair Project Idea
LEDs (light-emitting diodes) are electronic components that convert a portion of the electrical energy flowing through them into light. How does the intensity of the light produced vary with the current flowing through the LED? To find out, you'll build some simple circuits to vary the current flowing an LED. You'll also build a simple light-to-voltage converter circuit to measure LED output. Read more
Elec_p037
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- Less Details
Time Required Short (2-5 days)
Prerequisites Understanding of Ohm's Law.
Material Availability Specialty items
Cost Average ($50 - $100)
Safety No issues
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