High School Science Projects (Page 14)

How to Build an X-ray Machine

Science Fair Project Idea

Scientific Method

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

Build a Voice-Controlled Lamp

Science Fair Project Idea

Engineering Design Process

"Alexa, turn on the lights!" Sometimes it is easy to take the technology around us for granted. But have you ever wondered how a smart speaker like an Amazon Echo® knows what you are saying and how it can control lights and appliances in your home? It can seem like magic if you buy a device that just works when you open the box. In this project, you will learn how it works. You will build your own smart home device to control an appliance with voice commands using an Arduino®. Get… Read more

The Physics of Baseball and Hit Charts

Science Fair Project Idea

Scientific Method

In baseball, coaches use hit charts to track the results of every hit each player makes, giving a measure of the player's performance. Have you ever wondered what things affect where a baseball goes when a player hits it with a bat? In this project you will set up an experiment to hit a ping pong ball in a controlled manner using a toy catapult, then learn about the physics of baseball by making your own hit chart. Read more

Crime Scene Chemistry: The Kastle-Meyer Test for Blood

Science Fair Project Idea

Scientific Method

Police detectives use various scientific tools to analyze evidence at a crime scene. One of the classic tools is the Kastle-Meyer test for the presence of blood. This test is inexpensive, easy to perform, and provides quick results. The test provides evidence if red spots found at a crime scene are actually blood. But the investigator needs to be careful, since other substances can also give a positive result. In this crime scene chemistry science project, you will learn how to perform the… Read more

What Electric Bills Can Tell You About Energy Use

Science Fair Project Idea

Scientific Method

This project is a great way to "bring home" the concept of energy use. All you need to get started is a good-sized sample of monthly electric bills from households in your area. Building from this simple beginning, you can ask questions that can take you in many different directions. For example: How much electricity does the "average" person in your area use per month? How much does electricity use vary among different families? Read more

Build a Model Satellite with Arduino

Science Fair Project Idea

Engineering Design Process

Have you ever wondered how satellites steer themselves? How can a spy satellite aim its camera? How can a satellite keep its solar panels oriented toward the sun? In this project, you will learn about one method satellites use to control their orientation, called a reaction wheel, and build your own working prototype of a miniature satellite. Read more

Talk About a Bad Hair Day!

Science Fair Project Idea

Scientific Method

Did you know that you can make a simple hygrometer (a device for measuring the relative humidity of the air) with hair? Search online for instructions to build one. Does the type of hair used in the hygrometer affect the accuracy of the results? Do some types of hair respond faster than others? Do some types of hair give a larger (or smaller) response? You could get hair samples from classmates, or a local beauty shop. Use hair samples of equal length to construct each hygrometer. To force… Read more

Can You Influence the Compromise Effect of Decision Making?

Science Fair Project Idea

Scientific Method

Have you ever given any thought to the question, "What size drink do you want?" This experiment explores the behavioral neuroscience behind decision-making. It will explore why we make certain choices and even how we rationalize our choices after we make them. Read more

Using a Laser Pointer to Measure the Data Track Spacing on CDs and DVDs

Science Fair Project Idea

Scientific Method

You've probably noticed the colorful patterns "reflecting" from the shiny surface of a CD disk. What you are seeing is actually diffraction of white light, and the rainbows of color are diffraction patterns. In this project you'll learn about how diffraction patterns are generated, and you'll find out how you can use a laser pointer and a protractor to measure the microscopic spacing of data tracks on a CD. Read more

Remove Silver Tarnish with a Homemade Battery

Science Fair Project Idea

Scientific Method

Have you ever wondered why silver jewelry that starts out nice and shiny turns brownish-black and dull over time? The brownish-black stuff is called silver tarnish, and it is the result of a chemical reaction on the silver's surface. Luckily, there are many ways to clean tarnished silver and make it shiny again! In this science project, you will explore how to clean tarnished silver using electrochemistry. The electrochemical silver cleaning reaction requires aluminum and a salt solution. Your… Read more

High School Science Projects (695 results)

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