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Eighth Grade Science Experiments (top 2,000 results)

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Density Column Science
Blog Post
Compare the density of different liquids by making a colorful density column at home! Why do some liquids sit on top of each other, and others do not? Find out with a hands-on science project that lets kids see how different liquids "stack up." Not all liquids have the same density. But what does this mean? Scientists define density as mass divided by volume. In the same amount of space (or volume), some substances have more mass than others. A liquid… Read more
Detective Science: Weekly Science Activity
Blog Post
In this week's spotlight: a physics-focused science activity that helps families learn more about how forensic science can provide clues to solve crimes! Blood stains and spots at the scene of a crime can help detectives piece together what happened. In this activity, students use fake blood and investigate how blood stains change depending on the height from which the blood was dropped. It may sound gory, but there is interesting physics to explore! You and your family can explore the… Read more
Diaper Duty Science
Blog Post
In this family STEM activity, students take an inside look at the polymer in diapers that makes them absorbent. Just Add Water What do astronauts and babies have in common? They both rely, at times, on diaper-like solutions to keep them dry. When it comes to how a diaper absorbs liquid and keeps moisture away from the body, there is serious science at work. With a family-friendly science activity, kids can take a closer look at what happens inside a diaper when the diaper gets… Read more
Diapers: What Keeps Babies and Astronauts from Springing a Leak?
STEM Activity
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When we think about diapers we usually think about babies, because most of us wore them when we were babies and now maybe our siblings or friend’s siblings wear them. But did you know that astronauts also have to wear diapers sometimes? Astronaut diapers are called Maximum Absorbency Garments (MAGs), and astronauts wear them when they have to stay in their suits for long periods of time, such as during spacewalks, or as their ships are re-entering the atmosphere.  For babies and for… Read more
Digital Image Processing
Science Fair Project Idea
Scientific Method
Students who are mathematically inclined can use the student version of a program like MatLab or Mathematica to convert a digital image into numbers, then perform operations such as sharpening or special effects. This is a great way to learn about image processing algorithms. Read more
Digital Photo Contrast
Science Fair Project Idea
Scientific Method
What do you do if you take a photo and it turns out too dark or too bright? You can use your computer to fix it for you. Read more
Digital Photo Resolution
Science Fair Project Idea
Scientific Method
Do you have a favorite picture? When you have a photo that you treasure, you want it to look as good as possible. Find out how the resolution of a digital photo effects the way it looks when you print it out. How does the quality of the image relate to the resolution? Read more
Digital Photos and Dynamic Range
Science Fair Project Idea
Scientific Method
Digital cameras can be a great way to learn about photography. Most digital cameras today have LCD screens, so you get instant feedback on your photo. If you make a mistake, no problem, you just delete the picture. It's nice that you don't have to worry about the expense and bother of developing film! This project can help you learn to take better pictures. Read more
Digital Voice Analysis
Science Fair Project Idea
Scientific Method
Use sound recording and analysis software to record voices of your family members. Can you figure out ways to identify each family member by just looking at the analyzed sound patterns from their voice (e.g., spectral frequency analysis)? Develop a hypothesis about what types of sound analysis will identify an individual. Have a helper record additional test files of your family members, without telling you which file belongs to whom. Unplug your computer speakers and see if you can… Read more
Ding, Dong, Ding, Dong: Morning Bells Are Ringing
Science Fair Project Idea
Scientific Method
For centuries, beautiful bell towers, like the Leaning Tower of Pisa, have been the center of village life, announcing the time of day, the joy of weddings, and the sorrow of funerals. They were also used to call villagers to action in times of danger. Have you ever wondered, though, why people put the bells in towers? The bells are so heavy, why haul them all the way up to the top of tall towers? Why not just ring them on the ground? Putting bells up high does make for a dramatic visual… Read more
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