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Science Fair Project Idea
thumbnail So, you've got your popcorn and are settled into your seat at the movie. The lights dim—it's show time! But wait a second. Did you ever wonder how those lights dim so smoothly? It just wouldn't be the same if the lights suddenly snapped off, would it? In this electronics science fair project, you'll investigate dimmer switches, and even build a simple model of one. Try this project and light up your room, and your mind! Read more
Elec_p056
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety You will need an adult's assistance to use the pocket knife. Adult supervision is required.
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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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
If you like playing electric guitar, this could be a cool project for you. Have you ever wondered how an electric guitar works? In this project you'll wind one or more of your own electric guitar pickups and test them out in an inexpensive electric guitar. How will the sound change with the number of turns you use in the coil? Or with the strength of the magnets you use? Read more
Music_p004
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Time Required Average (6-10 days)
Prerequisites To do this project, you'll need an inexpensive electric guitar in which to install and test the pickup(s) you make. You'll also need a guitar amplifier.
Material Availability Readily available
Cost Very High (over $150)
Safety Adult supervision required when potting (melted wax-coating) the pickup
Science Fair Project Idea
thumbnail What can you do with magnets and ball bearings that makes a lot of noise? Why, build a magnetic rifle, called a Gauss rifle, of course! Now, this rifle is not a weapon, but a way for you to learn a lot more about physics concepts, like momentum. In this physics science project, you will investigate how far a ball bearing launched by a Gauss rifle will fly, depending on how many magnetic acceleration stages are in the rifle and the ball bearing's initial velocity. This science project makes for… Read more
Phys_p081
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Time Required Average (6-10 days)
Prerequisites None
Material Availability Specialty items including neodymium magnets and steel ball bearings are needed for this project. See the Materials and Equipment list for details.
Cost Low ($20 - $50)
Safety A Gauss rifle can produce high velocity projectiles. Do not aim the gun at anyone or anything; do not put your hand in front of the projectile. Operate the Gauss rifle safely. Be sure to read the important safety notes at the beginning of the Experimental Procedure before you begin. Scissors or other metal objects may be attracted to the magnets; use caution when using metal objects near the magnets.
Science Fair Project Idea
thumbnail Our home, Earth, is a living planet. Earthquakes and volcanic eruptions are proof that the geological forces that shaped our planet and created the land masses are ongoing. An amazing example of geologic activity that is less damaging is a geyser. In this geology science fair project, you will build a model geyser and determine how depth of the source affects how the water is ejected. By the end of this project, you will know a lot more about geysers and understand that a geyser is much more… Read more
Geo_p040
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Time Required Long (2-4 weeks)
Prerequisites None
Material Availability Specialty items are required. This science fair project requires using an Erlenmeyer flask and a rubber stopper with a hole through it. See the Materials and Equipment list for details.
Cost High ($100 - $150)
Safety Minor injury is possible, so wear safety goggles. Adult supervision is required.
Science Fair Project Idea
thumbnail You may be familiar with permanent magnets—the kind that hang on a refrigerator. But did you know that other magnets, called electromagnets, can be turned on and off? When turned on, electromagnets act just like permanent magnets, but if you turn them off, their magnetic properties disappear. Electromagnets are an important part of many electronic devices, like motors, loudspeakers, and hard drives. You can create an electromagnet with a simple coil of wire and a battery. In this science… Read more
Elec_p035
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- Less Details
Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety The electromagnet can become hot during periods of extended use.
Science Fair Project Idea
thumbnail Here is a project that is almost like a magic trick: with a strong magnet and a simple apparatus you can build yourself, you can make a coin "walk" up and down a wire coat hanger! This project is an interesting way to learn about the distance over which magnetic forces act on magnetic materials. Read more
Phys_p024
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Time Required Short (2-5 days)
Prerequisites None
Material Availability Specialty items
Cost Low ($20 - $50)
Safety Use strong magnets with care! See safety notes below.
Science Fair Project Idea
thumbnail Want to know how electrical engineers "trap" the energy in a circuit to make your favorite electrical appliance? Video games, computers, phones, and many other electrical devices use "resistors" in different ways to control the electricity in a circuit. In this experiment, you can make your own resistors out of pencils, and test the effect a resistor has on a circuit. Read more
Elec_p013
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Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety Requires adult supervision
Science Fair Project Idea
thumbnail Do you know how to find the north and the south poles of a magnet? What materials are more magnetic than others? Is there a way to measure how strong a magnet is? Is there a way to measure the strength of an electromagnet? How much does the material that is in the core of the electromagnet affect its magnetic strength? With this project, you'll be able to answer these questions and many others. You will learn how to build and use a simple meter for measuring magnetic field intensity. Read more
Elec_p030
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- Less Details
Time Required Average (6-10 days)
Prerequisites None
Material Availability Specialty items are needed. See the Materials tab for details.
Cost Low ($20 - $50)
Safety No issues
Science Fair Project Idea
thumbnail Renewable energy is the energy that is extracted from natural sources, such the Sun (solar), earth (geothermal), wind, and water (hydropower). These sources are renewable because they can be replenished by the same natural sources within a short period of time. Hydropower energy is extracted from moving water, like ocean wave energy and tidal energy. In this energy science fair project, you will make a model of a tidal barrage (also known as a dam) and investigate how emptying the tidal barrage… Read more
Energy_p028
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- Less Details
Time Required Short (2-5 days)
Prerequisites You will need access to a drill and hole saws.
Material Availability Readily available
Cost Average ($50 - $100)
Safety Minor injury is possible. Use caution when using a drill. Always wear safety goggles when working with power tools. Adult supervision is required.
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