Twelfth Grade Science Experiments (Page 89)

Science Fair Project Idea

Engineering Design Process

How do you design a program that can pilot a self-driving race car? By using machine learning. In this project, you will train your own machine learning model for an autonomous vehicle, the AWS (Amazon Web Services) DeepRacer. You can run your car's machine learning model on a simulated racetrack (Figure 1), or you can purchase a 1/18 scale model vehicle that can race on a physical track (Figure 2 - note: new cars are no longer for sale, but you may be able to purchase a used one on a site like… Read more

Dust Busters: How No-Plow Farmers Try to Save Our Soil

Science Fair Project Idea

Scientific Method

Do you have any great-grandparents who lived through the Great Depression in the United States during the 1930's? If so, they might have stories to tell about terrible dust storms that blackened the skies, from the Midwest to the east coast. Severe drought was a factor in causing this "Dust Bowl" era, but decades of poor farming practices contributed to it, too. In this environmental science fair project, you'll learn about farming methods that help keep dirt from drying up into dust, and help… Read more

Ears: Do design, size and shape matter?

STEM Activity

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Have you ever been puzzled by a faint noise nearby, trying to discover what it is? Maybe you turned your head or cupped your hand behind your ear, hoping to hear the sound better. What if we could make this cup huge? After all, some animals with exceptional hearing have big ears, like a serval (a type of wildcat), which can hear a mouse wiggling its way underground. Birds are even believed to use their entire head as an outer ear. In this activity, you will design and test your newest hearing… Read more

Earthquake Rollers

STEM Activity

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Earthquakes can cause serious damage to buildings and even loss of human life. Many of the world’s most populous cities are in earthquake-prone regions. How can engineers keep the millions of people in those cities safe? Find out how you can use science to save lives in this fun activity! Read more

Efficient Propeller Design

Science Fair Project Idea

Scientific Method

How does a helicopter generate enough lift to fly? How does a speedboat get moving fast enough to pull someone on water skis? Here's a project on designing propellers to do the job. Read more

Engineer an LED Night-Light

Science Fair Project Idea

Engineering Design Process

Night-lights can be found in many homes; you might even have one in your bedroom! Using a night-light is a great way to avoid stubbing your toe on furniture during a midnight trip to the bathroom. In this fun engineering project, you will design and build your own night-light. You will need to build the circuit, but you will also need to think about the physical design of the product. Most people probably do not want an ugly, bare circuit board sitting around their house. Can you make a… Read more

Explore How Chromatography Can Unmix Mixtures

Science Fair Project Idea

Scientific Method

Did you know that mixtures can be unmixed? Chromatography is an analytical technique in chemistry to separate mixtures and identify each of its individual compounds. In this project, you will separate ink dyes found in different markers using a strip of paper, chalk and different liquids. By comparing different chromatography substrates and solvents, you will learn how different attractive forces between substances can affect the separation of a mixture into its individual components. Read more

Exploring Nanotechnology: Fold, Roll, & Stack Your Way to Super-Strong Materials

Science Fair Project Idea

Scientific Method

Advertisements for high-tech sports gear or the latest and greatest outdoor material promise lighter and stronger products every season. Is it a scam? How can engineers keep creating materials that are both lighter and stronger than anything known so far? The answer is in the nanoscale! Using nanotechnology, scientists can play around with the detailed structure of matter, leading to a whole new range of materials, some with amazing qualities. In this science project, you will get a glimpse… Read more

Exploring the Uncanny Valley

Science Fair Project Idea

Scientific Method

What do you consider creepy? Clowns? Zombies? Video game characters with jerky movement? In 1970, a roboticist by the name of Masahiro Mori suggested that people are "creeped out" by robots that are almost, but not exactly, humanlike. He called this phenomena the uncanny valley. But researchers are still exploring and defining the uncanny valley. In this science project, you can do your own exploration—just try not to creep your friends out too badly! Read more

Expression Cloning

Science Fair Project Idea

Scientific Method

What is expression cloning and how is it used in the biotechnology industry? How are plasmids constructed for use in a bacterial expression system? You can investigate these questions and more using bacterial expression kits meant for high school classes. You will need a laboratory space equipped to grow bacteria and carry out simple molecular biology. A kit with plasmids and bacterial cells to transform are also needed. Here are two possibilities: BioBuilder What a Colorful World Kit … Read more

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