Eighth Grade Science Experiments (Page 148)

Explore Diabetes with Student STEM Projects

Blog Post

November is National Diabetes Awareness Month. Students interested in science related to diabetes can learn more with hands-on science projects and activities. Exploring Science Questions Related to Diabetes When faced with a science project or science fair project assignment, students who have Type 1 Diabetes, or have a family member of friend with diabetes, often immediately think about exploring a science question related to diabetes. Diabetes… Read more

Explore Perceptrons: A Simple Type of Neural Network

Science Fair Project Idea

Engineering Design Process

Have the phrases "machine learning" or "neural network" caught your interest, but you are not really sure how to use them in a science project? This project is a great place to start for beginners. You will learn about a very simple type of neural network—a computer program modeled after the human brain—called a perceptron. The perceptron can make a simple yes/no decision based on several inputs. You can "train" your perceptron to improve its decision-making abilities. Try it and… Read more

Explore Radioactive Decay with Coins

Blog Post

Explore the science of radioactive decay with a safe hands-on family STEM activity. As radioactive materials decay, or break down, they emit radiation that may be harmful. Unfortunately, the amount of time it takes for a radioactive material to decay varies. Scientists talk about the rate of decay in terms of the material's "half-life." Some materials have a very short half-life and others have a very long half-life. In this week's family science activity, students can simulate… Read more

Explore Soil Erosion and See What a Plant Can Do.

STEM Activity

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You pick up litter, you reduce, reuse and recycle but did you ever consider conserving the soil? It might seem farfetched, but it turns out that soil erosion—or the wearing away of soil by water, wind and other natural forces—is a problem. Productive farmlands can disappear as nutrient-rich topsoil in fields washes away when heavy rains hit them. Waterways can get polluted as pesticides and fertilizers wash into them. Even human life and property are jeopardized, as soil erosion… Read more

Explore the Effects of pH on Lead Testing.

Science Fair Project Idea

Scientific Method

Lead is a very hazardous element. Even very small amounts can cause health problems, especially in babies and young children. One way to determine if a household item, such as a toy or a piece of jewelry, contains lead is to soak the item in a solution, and then test the solution for lead that might have leached out of the item. The goal of this chemistry science fair project is to determine how varying the pH of the test solution affects its ability to dissolve lead, which is a critical step… Read more

Explore the Wet Sand Effect

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Summer is the perfect time to take a stroll at the beach and walk barefoot along the shoreline. While doing that, have you ever looked at your footprints in the wet sand? If so, you might have noticed that with every step it looks like the sand around your feet dries out. Why is that? These dry footprints are caused by the pressure of your feet. You will find out exactly how this happens by doing this beachy activity! Read more

Exploring the Depths – of Vision!

STEM Activity

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Did you know that there is a type of clam that has thousands of small eyes covering its body? It’s called the Tridachna gigas, and it lives in the South Pacific Ocean. Although it has a lot of them, the Tridachna gigas’ eyes are fairly primitive compared to ours (so don’t be too jealous that you don’t have thousands of eyes too!). In modern times, all vertebrate animals (including humans) have two eyes. Humans have developed an amazingly complex visual processing… Read more

Falling Buttered Toast

STEM Activity

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As I was buttering toast on a beautiful Sunday morning, one piece slid off the table and tumbled down. It smacked buttered-side down on the carpet. “Bad luck” flashed through my head—but was it a matter of chance, or was the toast doomed to reach the ground buttered-side down? Time for science to tell us! Take a slice, try it out and learn about the science behind a falling slice of toast! Read more

Families and Fingerprints: Weekly Science Activity

Blog Post

Experiment to find out if fingerprint patterns are inherited or not! In this week's spotlight: a genetics and genomics family science experiment for Father's Day. Fingerprints are unique, but do family members share fingerprint characteristics? Are there patterns of inheritance that come into play when it comes to fingerprints? Put the question to the test with a visual examination of fingerprints among siblings and between different family… Read more

Family Science: Candy Chromatography

Blog Post

Use paper chromatography to explore the colors in candy coatings in this colorful hands-on science project for K-12 STEM. Science Buddies Science Projects: Hands-On for school and for home In this week's spotlight: a pair of projects perfect for putting a portion of your kids' candy piles to scientific use! Use paper chromatography to explore the colors in candy coatings with one of these hands-on science activities: Candy Chromatography: What Makes… Read more

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