Physics is the study of matter — what is it made of? How does it behave? What laws or equations describe it? From subatomic particles, to the Big Bang, modern physicists study matter at a tremendous range of scales. There's a whole lot of interesting physics at the human scale, too.
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| Featured Take the Science Buddies Engineering Challenge! Try the annual Engineering Challenge from Science Buddies! Open to all students worldwide, a new challenge and prizes are announced every January. Explore the current challenge as well as ones from past years! Read more
Build a Paper Roller Coaster Log in to add favorite More Menu
STEM Activity 1 2 3 4 5 812 reviews Have you ever ridden a roller coaster? Have you ever wanted to design your own? There are plenty of expensive toys and even video games that will let you build your own coasters—but in this project you'll make one out of paper and tape, and learn about roller coaster physics along the way! Read more
Marble Roller Coaster: How Much Height to Loop the Loop? Log in to add favorite More Menu
Science Fair Project Idea This is a really fun project even if you don't like going on roller coasters yourself. You'll build a roller coaster track for marbles using foam pipe insulation and masking tape, and see how much of an initial drop is required to get the marble to "loop the loop." It's a great way to learn about how stored energy (potential energy) is converted into the energy of motion (kinetic energy). Read more
New Design Your Own Smart LED Lighting System Log in to add favorite More Menu
Science Fair Project Idea Have you ever had lights turn on automatically when you walked into a room? Have you turned on a light with your voice instead of a switch? Maybe you have even seen lights that change color depending on temperature, ambient sounds, or how close you are to something. In this project you will design and build your own smart LED lighting system that can change colors and react to various things in the room. The possibilities are endless! Read more
Rainbow Fire Science Project Log in to add favorite More Menu
Science Fair Project Idea Astronomers can figure out what distant stars are made of (in other words, their atomic composition) by measuring what type of light is emitted by the star. In this science project, you can do something similar by observing the color of flames when various chemicals are burned. Read more
How Does Color Affect Heating by Absorption of Light? Log in to add favorite More Menu
Science Fair Project Idea Why is it more comfortable to wear light-colored clothes on a hot summer day? Why wear a dark-colored jacket for early-morning fishing on a cold lake? How much difference can it make? Here's a project where you can quantify how much difference color makes for absorbing heat. Read more
Rubber Band Car Challenge for Grades 9-12 Log in to add favorite More Menu
Lesson Plan Grade: 9th-12th 1 2 3 4 5 5 reviews In this fun engineering lesson plan, your students will build rubber band-powered cars using readily available craft supplies. The challenge is to build a car that goes as far as possible while making careful use of materials. Elementary school and middle school versions of this lesson plan are also available. You can enter your students' designs in the 2024 Science Buddies Engineering Challenge for a chance to win a cash prize for your school. Read more NGSS Performance Expectations:
New Can You Create a Strategic Connect 4 AI Opponent? Log in to add favorite More Menu
Science Fair Project Idea When you play Connect 4, what strategies do you use to increase your chances of winning? In this project, you will explore how artificial intelligence can make decisions in two-player games such as Connect 4. This project requires little to no coding skill. Instead, you will need patience and an open mind. Why not give it a try yourself? Read more
Marble Roller Coaster: Converting Potential Energy to Kinetic Energy Log in to add favorite More Menu
Science Fair Project Idea If you'd like to investigate the physics of amusem*nt park rides, then this project is for you. You'll build a roller coaster track for marbles using foam pipe insulation and masking tape, and see how much the marble's potential energy at the beginning of the track is converted to kinetic energy at various points along the track. Read more
Launch Time: The Physics of Catapult Projectile Motion Log in to add favorite More Menu
Science Fair Project Idea In physics class, you have probably rolled your eyes at some point after being assigned a "projectile motion" homework problem where you use equations to predict how a ball will move through the air. This experiment will show you just how fun that problem can be by using a real catapult to launch a ball and videotaping it as it flies along its path. Then, you will analyze the video and compare it to what the equations predicted. If you have ever wondered if those equations in your physics… Read more
How to Build an X-ray Machine Log in to add favorite More Menu
Science Fair Project Idea When you have your X-rays taken at the dentist's or doctor's office, do you ever wonder how the X-ray machine works? Or better yet, how you could make one yourself to use for experiments? This how-to guide provides detailed instructions for high school students and adult do-it-yourself (DIY) enthusiasts to construct and use a homemade X-ray machine safely. Read more
Stealthy Shapes: How to Make an Aircraft Invisible to Radar Log in to add favorite More Menu
Science Fair Project Idea Have you ever dreamed about becoming invisible? Or about making something else invisible, like the mess all over your room? Invisibility may sound like the stuff of science fiction (remember Star Trek's "Cloaking Device"?), but in reality, military vehicles, like planes and ships, can be made less observable, or even invisible, to different detection methods—like radar, sonar, or infrared sensors—by using stealth technology. In this engineering science fair project, you'll find out… Read more
Using a Laser to Measure the Speed of Light in Gelatin Log in to add favorite More Menu
Science Fair Project Idea Think it takes expensive, sophisticated equipment to measure the speed of light? Think again! Outfit yourself with a simple handheld laser pointer, a protractor, and gelatin, and you're ready to get started. Read more
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