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Others Like “Is this connected to that? Use a homemade electronic tester to find out if electricity can flow between two objects.”

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Science Fair Project Idea
thumbnail Cars that can drive themselves might sound like science-fiction, but they are a reality. Self-driving cars are cars that use sensors and computer programs to automatically drive on roads, without intervention from a human driver. However, the cars still have to follow all the same rules of the road as human drivers, including staying in the correct lane, obeying road signs and traffic lights, and avoiding obstacles like potholes or fallen tree limbs. In this project you will build a simplified… Read more
Robotics_p023
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- Less Details
Time Required Average (6-10 days)
Prerequisites While no previous electronics or robotics experience is required to do this project, it will be helpful if you are familiar with basic circuit concepts and with using a breadboard. The Bibliography section in the Background tab has many tutorials you can use to get started.
Material Availability This project requires specific circuit components from an electronics vendor. See the Materials and Equipment list for details.
Cost Average ($40 - $80)
Science Fair Project Idea
There are two main types of materials when it comes to electricity, conductors, and insulators. What are they made of? Find out by testing different materials in a circuit to see which ones conduct the most electricity. Read more
Elec_p018
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Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety When working with electricity, take precautions and beware of electric shock.
Science Fair Project Idea
thumbnail Do you think it is possible to build a robot you can steer, without programming a computer to tell the robot what to do? Believe it or not, it is! In this engineering project, you will build a robot using a simple electronic circuit that steers the robot left or right to make it follow a bright light. Then you will make some adjustments to the robot to see if you can improve its steering. How well will you be able to control your robot? Read more
Robotics_p022
+ More Details
- Less Details
Time Required Average (6-10 days)
Prerequisites While no previous electronics or robotics experience is required to do this project, it will be helpful if you are familiar with basic circuit concepts and with using a breadboard. The Bibliography section in the Background tab has many tutorials you can use to get started.
Material Availability This project requires specific circuit components from an electronics vendor. See the Materials and Equipment list for details.
Cost Average ($40 - $80)
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.
Science Fair Project Idea
thumbnail 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
Science Fair Project Idea
thumbnail You probably know that turning off the lights and the water, and not wasting paper are all ways to help the environment and conserve our resources. Did you know that another way is to use fuel cells? A fuel cell is a device that converts the energy in chemicals to electricity and it creates no pollution. The starting chemical does not have to be something complex — in fact you it can even be water! In this science fair project try your own hand at converting water to electricity with the… Read more
Energy_p002
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- Less Details
Time Required Long (2-4 weeks)
Prerequisites None
Material Availability Specialty items required. See the Materials and Equipment list for details.
Cost High ($100 - $150)
Safety To do this science fair project, you will need to electrolyze water into hydrogen and oxygen. Hydrogen is flammable, so keep the fuel cell and hydrogen storage tank away from sparks.
Science Fair Project Idea
thumbnail Measuring the value of a resistor with an ohmmeter is pretty simple. You connect the meter to the resistor, and read off the measurement from the meter. But what if the resistance you want to measure is very low? This project shows you how to use a four-point resistance measurement method to measure low resistance values. Read more
Elec_p025
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- Less Details
Time Required Short (2-5 days)
Prerequisites To do this project, you should be familiar with Ohm's Law, and with the basics of using a digital multimeter.
Material Availability Readily available
Cost Average ($50 - $100)
Safety No issues
Science Fair Project Idea
thumbnail It's fun to host and attend parties. You can meet your friends, watch movies, and eat party food. Another thing that people like to do at parties is dance to music. Dancing is great exercise and just makes people happy. What if at the next party you attend, you could do your science fair project? Doesn't sound like a good idea? Well, in this electricity and electronics science fair project, you will make a dance pad that flashes lights when you step on it. Have your friends test it out for you.… Read more
Elec_p062
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- Less Details
Time Required Long (2-4 weeks)
Prerequisites None
Material Availability Readily available
Cost Average ($50 - $100)
Safety You must exercise caution when you use wire strippers.
Science Fair Project Idea
thumbnail Do you enjoy sculpting animals and other three-dimensional creations with play dough and modeling clay? Imagine adding lights to a house you've built, or glowing eyes on a dinosaur you've created. There are countless possibilities! In this science project, you will make play dough that conducts electricity so you can add lights to your three-dimensional creations. This science project is the third in a three-part series on squishy circuits, which can all be done with the same materials. We… Read more
Elec_p075
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Time Required Average (6-10 days)
Prerequisites This science project requires understanding the Introduction material in the first two "Electric Play Dough" science projects: [# ProjectIdea Name="Elec_p073" Value="HtmlAnchor" HtmlText="Make Your Play Dough Light Up, Buzz, & Move!" #] and [# ProjectIdea Name="Elec_p074" Value="HtmlAnchor" HtmlText="Rig Your Creations with Lots of Lights!" #]
Material Availability This science project requires a Squishy Circuits Kit and ingredients to make conductive and insulating play dough. See the Materials and Equipment list for details.
Cost Low ($20 - $50)
Safety Ask for an adult's help when using the stove to make the conductive play dough. Never connect the battery pack's terminals directly to each other; this is called a short circuit and can make the batteries and wires get very hot. Do not connect the LEDs directly to the battery pack without using play dough; this will burn out the LEDs.
Science Fair Project Idea
thumbnail Everyone knows electricity can create heat, especially because our electrical appliances tend to warm up when turned on. But wouldn't it be cool to do the reverse — generate electricity from heat? In this science project, you will study why it happens, measure the effect, and then use the phenomenon to build your own device, a thermocouple thermometer, that will enable you to convert heat into electrical energy. Read more
Elec_p072
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- Less Details
Time Required Short (2-5 days)
Prerequisites Understanding of or willingness to look into the concepts of temperature, heat, electrical current, electrical potential, and different theories of modeling electric conductors.
Material Availability Readily available.
Cost Low ($20 - $50)
Safety No issues.
Science Fair Project Idea
thumbnail Light interacts with matter in a variety of ways—it can be absorbed, reflected, refracted (bent), and scattered. The scattering of light explains why the sky is blue, why milk is white, and why the Mississippi River is called "The Big Muddy." In this biochemistry science fair project, you will make an electronic device to measure the amount of scattered light in milk. You will also use the device to track the activity of protease (a type of enzyme) in pineapple juice, based on its ability… Read more
BioChem_p032
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- Less Details
Time Required Long (2-4 weeks)
Prerequisites A familiarity with basic chemistry is required. Experience with simple electronics would be helpful, but is not absolutely required. Although the procedure provides step-by-step instructions, this is a DIY (do-it-yourself) science fair project that may call for some creative problem solving on your part.
Material Availability Electronic components are required. See the Materials & Equipment list for details.
Cost Average ($50 - $100)
Safety Use caution when working with laser pointers. Wear safety goggles when using the drill.
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