High School Projects, Lessons, Activities (Page 14)

Effect of Trebuchet Arm Length or Counterweight Mass on Projectile Distance

Science Fair Project Idea

Engineering Design Process

Before cannons widely replaced them, siege engines were often used by armies to throw large stones and other projectiles to break down castle walls. One of the most advanced siege engines used in the Middle Ages was the trebuchet, which used a large counterweight to store energy to launch a payload, or projectile. The horizontal distance the payload would travel is called the trebuchet's range. Figure 1, below, shows a modern reconstruction of a trebuchet. The range of a trebuchet has… Read more

Explore Matchstick Rockets

STEM Activity

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If you have wondered how rockets are propelled forward or if you enjoy the excitement of launching a rocket, this is an activity for you! You will learn how to make tiny rockets from aluminum foil and matchsticks, and how to ignite them safely. Soon, you will be launching one rocket after the other! Your challenge will be to find the most reliable launching mechanism. Read more

Exploring the Chemistry of Red Flower Pigments

Science Fair Project Idea

Scientific Method

Are all reds the same? Find out in this science fair project! Investigate if the pigments in one type of red flower are different from those in another type of red flower. Flowers contain an assortment of amazing chemicals that produce color. In this plant biology project, you will analyze the colored pigments in different plants' red flower petals using paper chromatography, and compare the pigments in the different flowers. Read more

Fuel Cells—Fueling the Future!

Science Fair Project Idea

Scientific Method

You probably know that turning off the lights and the water, and not wasting paper are all ways to help the environment and conserve our resources. Did you know that another way is to use fuel cells? A fuel cell is a device that converts the energy in chemicals to electricity and it creates no pollution. The starting chemical does not have to be something complex — in fact you it can even be water! In this science fair project try your own hand at converting water to electricity with the… Read more

How Blue is Your Sports Drink?

Science Fair Project Idea

Scientific Method

Do you read the list of ingredients in foods and drinks before you buy them at the grocery store? If you do, you may have noticed that many of the items, especially colored drinks, contain dyes with names such as FD&C Blue 1, Red 40, or Yellow 5. But how much dye is needed to create all these colors? In this chemistry science project, you will build a simple spectrophotometer that is able to measure the concentration of colored chemicals in solutions. You will test your device by measuring… Read more

How Does the Tilt of Earth's Axis Affect the Seasons?

Science Fair Project Idea

Scientific Method

Many people are surprised to learn that the season's we experience—winter, spring, summer and fall—have nothing to do with the distance of Earth from the Sun. In this science fair project, you will investigate how the temperature on Earth actually depends on the tilt of Earth's axis of rotation. Read more

How Eco-Friendly is Your Sunscreen?

Science Fair Project Idea

Scientific Method

Imagine a wonderful summer day at the beach. You play in the sand, swim in the ocean—and, of course, put a lot of sunscreen on. The sunscreen protects your skin from harmful ultraviolet (UV) radiation. Special ingredients absorb or reflect the UV rays so they do not harm your skin. Different types of sunscreen have different types of ingredients, and some of them can be harmful to the environment—especially if they get into the ocean. In this science project you will put your… Read more

How Much Fat is in Your Food?

Science Fair Project Idea

Scientific Method

Have you ever been told to avoid certain foods because they contain too much fat? Almost every food we eat has some amount of fat in it; often in an invisible form so we do not even notice. However, eating healthy does not mean getting rid of all fat in your diet. On the contrary, fat is an essential nutrient for your body! Only consuming too much of certain fat types creates problems. Are you curious about how to determine the fat content of different foods? Gather some chips, chocolate, and… Read more

How Sugar Content Changes in Ripening Fruit

Science Fair Project Idea

Scientific Method

You have most likely witnessed the change that occurs as a banana ripens It changes from green and relatively hard to yellow and soft. The flavor also changes, from bitter to sweet. What happens during ripening? One big change is the increase in sugar content. In this food science fair project, you will measure how the sugar content of a banana changes as it ripens. Read more

How to Control a DIY Mini Drone with an Arduino™

Science Fair Project Idea

Engineering Design Process

Most drones fly with a mix of human input and autonomous control based on feedback from electronic sensors. This allows the drone to fly up and down when the human operator presses a joystick on a controller, but automatically hover at a fixed distance above the ground when the operator lets go of the joystick. In this project, you will explore drone programming with an Arduino. What types of inputs and sensors can you make your drone respond to? What behaviors and responses can you program… Read more

High School Projects, Lessons, Activities (850 results)

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