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Electricity & Electronics Project Ideas

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  Difficulty Level 4-7  

The Frightened Grasshopper: Explore Electronics & Solar Energy with a Solar-Powered Robot Bug Science Fair Project with Video

"How do you frighten a grasshopper? And what does that have to do with light?" These are a couple of questions you're probably asking yourself after reading the title. Well, The Frightened Grasshopper Solar-Powered Bug is actually a toy grasshopper that vibrates when it is placed in sunlight or near a lightbulb. It stores up the energy from light, and converts it into motion. You will use this fun toy to explore how the brightness of the light affects the motion of the solar-powered insect.   Read more...
Difficulty =   3  –  4      Add to favorites     Show others like this

Is this connected to that? Use a homemade electronic tester to find out if electricity can flow between two objects. Science Fair Project Kit to Buy

What do lamps, computers, televisions, printers, and kitchen appliances all have in common? They all need electricity to work. In order for electricity to provide power to these devices, it has to flow into and out of them. In this electronics science fair project, you will make your own simple circuit tester and use it to study how electricity flows through a lamp.   Read more...
Difficulty =   4  –  6      Add to favorites     Show others like this

The Speed of Light: Explore Solar Energy with a Supercapacitor Car Motor!

Solar cells are devices that can be used as a source of power when there is light shining on them, but they stop producing energy when they are not in the light. One way to store the solar energy for later use is to use a solar cell to charge something called a capacitor. The capacitor stores the energy as an electric field, which can be tapped into at any time, in or out of light. In this electronics science project, you will use parts of a solar car to experiment with the energy storage capacity of a supercapacitor.   Read more...
Difficulty =   4  –  5      Add to favorites     Show others like this

Rock On! Recording Digital Data with Magnets

This is a straightforward project that shows you how data can be digitized and stored on magnetic recording media. You'll learn how alpha-numeric characters are digitized, and you'll use bar magnets to represent the individual data "bits." You'll also learn about how much information can be stored in a small space (recording density), and how magnetic data can be erased.   Read more...

The Strength of an Electromagnet

Electric charges in motion create magnetic fields. You can create an electromagnet with a simple coil of wire and a battery. This project has ideas for exploring how the strength of the electromagnet depends on the size of the coil or the voltage supplied to it.   Read more...

Spin Right 'Round with this Simple Electric Motor Science Fair Project Kit to Buy

Did you know that you probably used an electric motor today? Yes, that's right. If you put on clothes that were washed in a washing machine, rode in a car, ate food from a fridge, warmed up lunch in a microwave, or played a video game, you used an electric motor! Try this science fair project and you'll learn how to make a simple electric motor by having two magnets "talk" to each other. As they interact, they will alternate between "liking" each other (being pulled together), and "disliking" each other (pushing away from one another). All that pushing and pulling will create some serious spinning, and you will have built an electric motor!   Read more...
Difficulty =   5  –  7      Add to favorites     Show others like this

Mapping Magnetic Fields *

You probably know that you can use iron filings to reveal the magnetic field produced by a strong magnet. If you sandwich the iron filings between pieces of waxed paper, you can make a permanent...   Read more...

Upstairs, Downstairs: Turning on a Light from Two Places *

Maybe somewhere in your home there's a long hallway or a stairway with a light that you can turn on from either end. It's a nice convenience, but did you ever wonder how it's wired up to work that...   Read more...

Build Your Own Crystal Radio Science Fair Project Kit to Buy

Here's a science fair project that shows you how to build your own radio receiver! You'll learn the basic circuit elements required for receiving radio signals, and you'll be able to listen to AM radio broadcasts with something you made yourself. A nice feature of this project is that you can make it as easy or as advanced as you want.   Read more...
Difficulty =   5  –  9      Add to favorites     Show others like this

Cool Junctions

Everyone is familiar with the idea that electric current passing through devices can heat them up. Most of us have used appliances like electric stoves, hair dryers, and toasters that are made specifically for heating. We've also noticed that things that run on electricity get warm when the current is turned on. Have you ever turned this relationship around and wondered if it is possible to use heat to produce current? Did you ever wonder if it is possible to cool things using electrical current? If so, then look no further! Check out this project to learn about thermoelectricity.   Read more...
Difficulty =   5  –  7      Add to favorites     Show others like this



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Index of Electricity & Electronics Project Ideas
Rubbing Up Against Static Electricity | Pencil Resistors | Which Materials are the Best Conductors? | Induction: How Many Coil Turns Do I Need? | How Do Different Materials React to Static Electricity? | Effect of Different Materials on a Magnetic Field | The Frightened Grasshopper: Explore Electronics & Solar Energy with a Solar-Powered Robot Bug | Is this connected to that? Use a homemade electronic tester to find out if electricity can flow between two objects. | The Speed of Light: Explore Solar Energy with a Supercapacitor Car Motor! | Rock On! Recording Digital Data with Magnets | The Strength of an Electromagnet | Spin Right 'Round with this Simple Electric Motor | Mapping Magnetic Fields | Upstairs, Downstairs: Turning on a Light from Two Places | Cool Junctions | Conductance as a Water Quality Measurement | Where There Is Charge, There Can Be Sparks! | Avoid the Shock of Shocks! Build Your Own Super-sensitive Electric Field Detector | Go, Gadget, Go! Building Robots with LEGO® Mindstorms® | Abracadabra! Levitating with Eddy Currents! | Sliding Light: How to Make a Dimmer Switch | Build a Reed Switch Motor | Dance Mania: Build Your Own Dance Pad! | Use Super-strong Magnets to Make a Simple Motor | Green Technology: Build an Electronic Rain Detector to Conserve Water | Smart Medicine Cabinet: Build a Sensor That Reminds Patients When to Take Medication | Does Your Cell Phone Leak? Measuring Cell Phone Radiation | Water Drops and Sparks! Experimenting with a Kelvin Electrostatic Generator | Using a Magnet as an Electrical Current Detector | Simple Circuit Logic with Switches: An Electric Puzzle | How Does LED Brightness Vary with Current? | How Far Can Sparks Jump? | Where Is 'Full Sun' No Brighter than Twilight? | Three, Two, One...Blast Off! Learn to Design an Ion Engine. | Wire Wilt: How Light-Emitting Diodes Fade As Temperature Increases | Linear vs. Logarithmic Changes: What Works Best for Human Senses? | Color Mixing with Red, Green, & Blue LEDs | How Long Does It Take to Fry a Diode? | Testing a Parabolic Reflector with Light from an LED | Two-Point and Four-Point Methods for Measuring Small Resistances | Make Your Own Low-Power AM Radio Transmitter | Measure Your Magnetism | Icy Hot Electricity: The Thermoelectric Effect | What is in this Water? Experiments with a Homemade Turbidity Meter | Build Your Own Radon Detector | Recording on a Wire |