Twelfth Grade Science Experiments (Page 120)

Come One, Come All! Explore the Effect of Light on the Speed of the Amazing Rotating Radiometer!

Science Fair Project Idea

Scientific Method

Radiometers are fun-to-watch novelty items, but they also have a distinguished scientific history, having been studied by James Clerk Maxwell and Albert Einstein. A radiometer has a set of four vanes (like small sails) connected to a spindle that is free to rotate. When the radiometer is placed in bright light, the vanes and spindle start to spin. It looks like a magic trick, but there is a scientific explanation for this weird behavior. In this science fair project, you will experiment with… Read more

Comparing Vocal Ranges: How High and Low Can Your Voice Go?

Science Fair Project Idea

Scientific Method

What is the highest note you can sing? How about the lowest? Do you think males and females can reach the same notes? How about children and adults? Find out the answers to all these questions in this "note"-worthy science fair project! Read more

Compression of Wet Sand

Science Fair Project Idea

Scientific Method

Did you ever notice the cool patterns around your footprints when you take a walk in the wet sand at the beach? The pressure of your feet has effects far outside your footprints. Here's a project that uses a simple experimental apparatus to investigate how the volume of wet sand changes under pressure. Read more

Conserving Angular Momentum, Without the Ice Skates

STEM Activity

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You might have heard about “conservation of angular momentum” and that it has something to do with ice skating. But how can you demonstrate it if you don’t have any ice skates around? Find out in this simple activity that only requires common household supplies! Read more

Construct a Carnival Buzzer Game with a Raspberry Pi

Science Fair Project Idea

Scientific Method

Have you ever played a game that tested the steadiness of your hands? Operation® is a popular board game that requires you to perform "surgery" without bumping a tool against the edges of the game. There are also popular amusement park or carnival games where you try to move a metal loop along a wavy metal wire without letting the two touch. You can build your own version of these games using a Raspberry Pi. Check out the video to see what this simple, but fun, project looks… Read more

Cookies: Can You Blame the Burnt Ones On the Cookie Sheet?

Science Fair Project Idea

Scientific Method

Have you ever bitten into a beautiful golden-brown cookie only to realize in dismay that the bottom is burned and black? What causes that uneven baking? Can it be prevented? You can discover the answer by conducting a science fair project to determine whether different types of cookie sheets result in noticeably different cookies. First you'll need to do some background research to figure out what kinds of baking sheets you can buy. For example, there are aluminum, steel, insulated, and… Read more

Correlation of Coronal Mass Ejections with the Solar Sunspot Cycle

Science Fair Project Idea

Scientific Method

Scientists have known for hundreds of years that sunspot activity waxes and wanes over a cycle that lasts approximately 11 years. In the 1970's, scientists discovered that the sun periodically blasts electrified gases into space, in huge outbursts called 'coronal mass ejections,' or CMEs. This project asks the question: do CMEs follow the solar sunspot cycle? Read more

Create and View Your Own 3D Models in Virtual Reality

Science Fair Project Idea

Engineering Design Process

Virtual reality (VR) headsets are becoming increasingly popular. Video game designers use a variety of programs to create the amazing 3D worlds that you see when you turn on your favorite video game, and many of those worlds are now also designed to be compatible with VR headsets. Can you use a computer-aided design (CAD) program or video game engine to design your own virtual world that can be viewed using a VR headset? Table 1 lists several CAD programs and websites that you can use to make… Read more

Creating a Video Game for Players with Visual Impairments

Science Fair Project Idea

Engineering Design Process

Do you enjoy playing video games? Do you like the challenge of reaching a difficult game level and scoring lots of points? Video games include many graphic elements that are great to watch, but did you know that not only sighted people enjoy video games? Blind and visually impaired players can also play video games by relying on sound cues — the pings, pops, bangs, and bursts of music that make a game fun or exciting. When building a game that will be accessible to differently abled… Read more

Crystal Ball Math: Predicting Population Growth with Models

Science Fair Project Idea

Scientific Method

When is an animal considered endangered? When will it become extinct? What happens when a population has reached the limits of its resources? What happens to a population when a habitat changes? These are some of the questions population biologists try to answer. They use population models, created from math equations, to predict what will happen to a population over time. If you want to see how modeling is done and make some predictions of your own, you certainly won't need a crystal… Read more

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