Twelfth Grade Science Experiments (Page 22)

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Have you ever wondered why some objects float on top of the ocean, and other objects sink to the bottom? It has to do with the density of the objects compared to the density of the salt water surrounding them in the ocean. If you add salt to plain water, it increases the density of the water. In fact, if you add enough salt, you can make the water so dense that an egg will actually float in it! Explore how this works in this science activity. Read more

Suck It Up! How Water Moves Through Plants

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Have you ever heard someone say, "That plant is thirsty," or, "Give that plant a drink of water"? We know that all plants need water to survive, even bouquets of cut flowers and plants living in deserts. But have you ever thought about how the water moves within the plant? In this activity, you will put carnations in dyed water to figure out where the water goes. Where do you think the dyed water will travel, and what will this tell you about how the water moves in the cut flowers? Read more

16+ Engineering Challenges for Middle School

Blog Post

Inspire students to think like engineers with hands-on building and design challenges! Spark interest and build engineering design skills with one of these free engineering projects for middle school students. 16+ Engineering Design Projects to Inspire Middle School Students! Engineering design projects and challenges are a great way to ignite student interest in STEM. When students tackle an engineering design challenge, they are encouraged to… Read more

7 Rainbow Experiments for Science Class

Blog Post

Making learning fun is sometimes half the battle! With the right activities, educators can ensure learning about science and engineering involves hands-on fun for students of all ages. Build in some colorful science exploration with STEM experiments on a rainbow theme! Rainbow STEM! The science of visible light and the physics involved in what we see as a rainbow can lead to exciting hands-on science investigations and experiments. The "cool factor" of… Read more

Build a Bird Nest

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Different types of birds lay their eggs in different places. Some build tiny nests in bushes, some build enormous nests in tall trees. Some lay their eggs directly on the ground or on rocky ledges. Those that build nests use many different types of materials. In this project you will try to build your own bird nest using only natural materials that you can find outside. Can you do better than a bird? Read more

Build a Solar Updraft Tower

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Have you ever had a sunburn? If so, you know how powerful the Sun's heat can be! Did you know that this heat can also be turned into electrical energy? You may have heard about solar cells, but what about a solar updraft tower? This very simple structure uses the sun to heat up air, which then powers a turbine within a large tower. In this activity, you will build one of these towers yourself. Do you think you can make a propeller spin with just hot air? Read more

Build a Two-Stage Balloon Rocket

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If you have ever watched a rocket launch on TV, you might have noticed that rockets have multiple stages. Some parts of the rocket fall off and burn up in the atmosphere whereas the rest of the rocket keeps going. Why does this happen? Try this activity to find out and build your own two-stage rocket using balloons! Read more

Build Your Own Super-sensitive Electric Field Detector

Science Fair Project Idea

Scientific Method

Wouldn't it be nice to avoid those nasty electric shocks you get after you have walked around on carpet and then touch a doorknob? These shocks are caused by static electricity. In this project, you will build a super-sensitive charge detector to investigate the electric fields created by static electricity. The detector can sense invisible electric fields before you touch something and get zapped, so try this project to avoid the shock of shocks! Read more

Burning Calories: How Much Energy is Stored in Different Types of Food?

Science Fair Project Idea

Scientific Method

Have you ever wondered how nutritionists know how many Calories a certain food contains? In this project you will learn a method for measuring how many Calories (how much chemical energy) is available in different types of food. You will build your own calorimeter to capture the energy released by burning a small food item, like a nut or a piece of popcorn. This project gives a new meaning to the phrase "burning calories!" Read more

Crack the Code! Make a Caesar Cipher

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If you need to send a secret message to a friend, how could you prevent other people from reading it? One way is to encrypt the message, or use a secret code that only you and your friend know. Try this activity to learn how to create your own "Caesar cipher," a popular type of code that is easy to learn. Read more

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