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Others Like “Batteries: The Shocking Truth”

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Science Fair Project Idea
Imagine telling your friends about your latest science project: using a battery to make a light turn on. You might get some blank stares...sounds a little boring and basic, right? Now tell them you will do it with a potato! Yes, you can actually use fruits and vegetables as part of an electric power source! Batteries power many things around you, including cell phones, wireless video game controllers, and smoke detectors. In this science project, you will learn about the basics of battery… Read more
Energy_p010
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability A kit is available for this project from the . Estimated time required includes time for shipping the kit.
Cost Average ($40 - $80)
Safety Do not eat the potatoes after they have been used as batteries.
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 wondered how your cell phone or laptop keeps running once you unplug it? Sure, it is the battery that makes your portable electronics work, but how exactly does a battery do that, and from where does the electricity come? Generally, in a battery chemical energy is converted into electrical energy. In fact, many different types of batteries exist that are all based on a different set of chemical reactions. In this science project, you will explore a special battery variant called… Read more
Chem_p107
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Time Required Average (6-10 days)
Prerequisites Some knowledge of basic chemistry and familiarity with the concept of electrochemistry would be helpful.
Material Availability This science project requires specialty electronics items. A structure is available. Estimated time required includes time for shipping the kit.
Cost Average ($40 - $80)
Safety Hydrogen peroxide can irritate the skin and eyes. When working with this chemical, make sure to wear eye and skin protection in case of any splashes or spills. In case of chemical contact, rinse skin or eyes immediately with plenty of water.
Science Fair Project Idea
What do you do with your old wooden pencils when they get too short to hold? Don't throw them away; you can use them to make circuits! This project will show you how to use pencils to make resistors, an important part of many electrical circuits, and test how they affect the brightness of a lightbulb in a simple circuit. Read more
Elec_p013
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability A kit for this project is available from the . Estimated project time includes time for shipping the kit.
Cost Low ($20 - $50)
Safety Short circuits can get very hot and present a burn hazard. Never connect the positive and negative ends (red and black wires) of the battery pack directly to each other. Adult supervision is required for cutting the pencils.
Science Fair Project Idea
Dimmer switches let us control the brightness of a light, anywhere from completely off to full brightness. This can be nice when you want to set the brightness "just right," as opposed to a regular light switch that only lets you turn a light on or off. It turns out that you can make a dimmer switch out of an everyday object—a pencil! Try this project to find out how a dimmer switch can control the brightness of a light. Read more
Elec_p056
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability For your convenience a kit for this project is available at the . Estimated project time includes time for shipping the kit.
Cost Low ($20 - $50)
Safety Short circuits can get very hot and present a burn hazard. Never connect the positive and negative ends (red and black wires) of the battery pack directly to each other. Adult supervision is required for whittling the pencil.
Science Fair Project Idea
Electric paint is a fun way to include a circuit with lights in an art project, but it presents a challenge not found in traditional electronic circuits. What happens if you change the length or width of your strokes of paint, such as by painting longer, curvier lines or using a thicker brush? Could this affect the electrical properties of your circuit? Try this project to find out! Read more
Elec_p086
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- Less Details
Time Required Average (6-10 days)
Prerequisites To do this project, you will need to use a multimeter. See the Science Buddies reference [# ProjectGuide Name="Advanced.ElectronicsPrimerMultimeter" Value="HtmlAnchor" #] to learn how to use one.
Material Availability This project requires special circuit materials. See the Materials and Equipment list for details. "Time required" includes time for shipping specialty materials.
Cost Average ($40 - $80)
Safety No issues
Science Fair Project Idea
Electricity powers many of the devices we use every day, from lights to video games and computers. Engineers have to use certain materials to make electrical devices work. In this experiment, you will find out which materials let electricity flow through them (conductors) and which ones prevent electricity from flowing through them (insulators). Read more
Elec_p018
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability For your convenience, a kit is available for this project from the . Estimated project time includes time for shipping the kit.
Cost Low ($20 - $50)
Safety Short circuits can get very hot and present a burn hazard. Never connect the positive and negative ends (red and black wires) of the battery pack directly to each other.
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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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
You have probably heard about using renewable energy sources like wind and solar power to provide electricity to homes and buildings, as well as hybrid or fully electric cars that use less (or zero) gasoline. But what about solar-powered robots? As robots become more common, it is increasingly important to use "green" energy sources to power them. In this project, you will build and test a popular robot called a bristlebot — a tiny robot made using toothbrushes—that can operate on… Read more
Robotics_p026
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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 . Time required includes estimated time for shipping the kit.
Cost Average ($40 - $80)
Safety No issues
Science Fair Project Idea
Do you ever wish you could hire someone to guard your favorite toys, or keep certain people from coming into your room? What if you could make a robot to do it for you? This project will show you how to build a simple security robot controlled by a motion-detecting sensor. When someone comes near your valuables or enters the room, the robot will spring to life and (hopefully) scare them away! Read more
Robotics_p024
+ More Details
- 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 at the .
Cost High ($100 - $150)
Safety Short circuits can get very hot and present a burn hazard. Be careful to avoid short circuits when building your robot. See the Procedure for more information.
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