Eighth Grade Science Projects (Page 15)

Science Fair Project Idea

Scientific Method

Have you ever dropped something and wondered how fast it was moving while falling? If it was something fragile, like a cell phone, you might not have been thinking about this at the time — you may have been too busy trying to grab the phone! But you probably wanted to find out just how hard it hit the ground afterwards. We know that gravity forces an object to fall, but how does this affect how quickly something falls and how hard it hits the ground? For example, did the phone move faster… Read more

Manipulating Magnets to Improve Generator Output

Science Fair Project Idea

Scientific Method

The electricity you use to power everyday devices is generated by electrical generators. These fascinating and powerful machines rely on magnets to function. Though they might seem extremely complicated, once you finish this science project, you will understand how, why, and when they generate electricity. You will build your own generator, make small changes in how exactly the magnets are placed, and test when moving magnets generate electricity. Read more

Predicting How Urban Wildfires Will Spread

Science Fair Project Idea

Scientific Method

Urban wildfires can cause devastating loss of life and property. Can we save lives by predicting how and where these fires will spread? What protective measures can we take to save buildings from the fires? In this project you will use a computer model to simulate how wildfires spread in populated areas, and experiment with different protective measures to try and save houses from burning. Read more

Measuring Antimicrobial Effectiveness with Zones of Inhibition

Science Fair Project Idea

Scientific Method

Have you heard that garlic powder is supposed to inhibit the growth of bacteria? Which do you think would make a better disinfectant: a solution of garlic powder or a solution of bleach? This project shows you a straightforward way to compare the effectiveness of different disinfectants (or other antimicrobial agents), by measuring zones of inhibition on a culture plate. Read more

Battle of the Senses: Taste Versus Smell

Science Fair Project Idea

Scientific Method

Have you ever tried an apple that tastes like a banana? It sounds weird, but what actually makes the apple taste like an apple? Our tongue is definitely important for identifying food flavors, but if you have ever had a stuffy nose, you probably noticed that your smell contributes to taste as well. Which of those senses has more influence on flavor? Imagine eating an apple and, at the same time, smelling a really strong banana scent. How to you think the apple will taste? Will the nose or the… Read more

Blood Clotting to the Rescue: How to Stop Too Much Blood from Flowing

Science Fair Project Idea

Scientific Method

Have you ever had a cut or a bloody nose that seemed like it would bleed forever? Though it might have seemed like a long time, it probably did stop pretty quickly. This is because different factors in a person's blood normally work together to plug the opening caused by the cut in a process called blood clotting or coagulation. However, some people have a genetic disorder called hemophilia that causes them to bleed excessively. If a person has hemophilia, he or she is usually missing some of… Read more

A Juicy Project: Extracting Apple Juice with Pectinase

Science Fair Project Idea

Scientific Method

Do you know why enzymes are oftentimes called the workhorses of biochemistry? It's because they can speed up a wide variety of chemical reactions, and chemists and biologists use enzymes to do all kinds of jobs. In this project, pectinase, an enzyme frequently used in the food industry, will be used to extract juice from apples. Read more

Blowing Bottle Tops: Making Music with Bottles

Science Fair Project Idea

Scientific Method

Have you ever blown across a bottle's top and made a pleasant, resonant sound? If so, have you wondered how that note is made exactly? A bottle is actually what is called an air cavity, also known as a Helmholtz resonator. Ocarinas are examples of musical instruments of this type. In this science project, you will use bottles to investigate how the volume of air in the cavity affects the pitch of the note that it makes. All you need are some bottles, water, a ruler, and a chromatic tuner. Read more

Marble Machine

Science Fair Project Idea

Engineering Design Process

Put your engineering skills to the test to see if you can build a machine—powered by nothing but gravity—that will automatically sort out two different sizes of plastic spheres. That might seem like a strange task, but have you ever used a coin sorter to separate pennies, nickels, dimes, and quarters? How about using a sifter in the kitchen to separate fine grains of flour or sugar from bigger lumps? Machines that can automatically sort objects or particles of different sizes are… Read more

Create a Facial Recognition System with Machine Learning

Science Fair Project Idea

Engineering Design Process

Have you ever wondered how your smart devices can recognize and distinguish your face from that of others? In this project, you will explore how to create and modify a facial recognition model using a type of artificial intelligence known as neural networks. This project is designed for beginners and requires little to no coding experience. Ready to give it a shot? Read more

Eighth Grade Science Projects (789 results)

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