Eighth Grade Science Experiments (Page 143)

Compost Science: Weekly Science Project Idea and Home Science Activity Spotlight

Blog Post

How does the rate of decomposition compare for different items and materials? Set up an indoor composter to find out! In this week's spotlight: a pair of environmental science projects that help guide families in an investigation of different biodegradable and compostable items. Do all environmentally-friendly items decompose at the same rate or as completely? With a homemade indoor composter, you and your students can run your own experiment and see… Read more

Computational Exploration of Protein Function

Science Fair Project Idea

Scientific Method

The DNA in our cells contains our "blueprints," but it's the proteins in our cells that do most of the work. The Human Genome Project has allowed us to start reading the blueprints, but we still don't understand what most of the proteins do. This is a fairly advanced project that explores ways of identifying the function of unknown proteins. Read more

Construct a Carnival Buzzer Game with a Raspberry Pi

Science Fair Project Idea

Scientific Method

Have you ever played a game that tested the steadiness of your hands? Operation® is a popular board game that requires you to perform "surgery" without bumping a tool against the edges of the game. There are also popular amusement park or carnival games where you try to move a metal loop along a wavy metal wire without letting the two touch. You can build your own version of these games using a Raspberry Pi. Check out the video to see what this simple, but fun, project looks… Read more

Cornbread Science: Weekly Science Project Idea and Home Science Activity Spotlight

Blog Post

In this week's spotlight: a food science project and family activity that explores the role of baking powder in baking. In this pair of projects, experiment to see the affect of baking powder on corn bread muffins for a clear visual look at what happens when you use more or less in your recipe. Does a light and airy muffin indicate one with or without baking powder? How does the density or weight of a muffin change in relation to the amount of baking powder used? What happens if you use… Read more

Correlation of Coronal Mass Ejections with the Solar Sunspot Cycle

Science Fair Project Idea

Scientific Method

Scientists have known for hundreds of years that sunspot activity waxes and wanes over a cycle that lasts approximately 11 years. In the 1970's, scientists discovered that the sun periodically blasts electrified gases into space, in huge outbursts called 'coronal mass ejections,' or CMEs. This project asks the question: do CMEs follow the solar sunspot cycle? Read more

Counting Sunspots on an Image of the Sun

Science Fair Project Idea

Scientific Method

Make a pinhole projector (see Measuring the Diameter of the Sun and the Moon). Use the pinhole to project an image of the Sun onto a wall or a piece of paper. Do you notice any dark spots on the projected image? Trace the projected image and count the dark spots. Use your pinhole projector to make images of the Sun at the same time of day for several consecutive days. How does the pattern of spots change? Can you use your data to figure out how fast the Sun rotates? Sunspot activity rises… Read more

Create a Sea Breeze

STEM Activity

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A hot summer day is the perfect time to go to the beach and cool down in the brisk ocean water. But it's not only the water that has a cooling effect at the beach. Have you ever noticed that there always seems to be a cool breeze blowing from the ocean to the shore? Where does the wind come from? In this activity, you will build a model of the ocean and the beach to find out—so next time you go to the beach, you will know why the sea breeze is blowing! Read more

Create Light Up Artwork with a Raspberry Pi

Science Fair Project Idea

Scientific Method

Have you ever seen night lights that automatically turn on when it gets dark? What about art projects, like paintings or sculptures, with embedded lights? This project will let you combine the two, by adding lights to an art project of your choice. You can make the lights automatically turn on when it gets dark using a Raspberry Pi. Check out the video to see what this simple, but fun, project looks like. IMPORTANT: The instructions for this project were originally written using Scratch 2 on a… Read more

Cryopreservation: Freezing Plant Tissues

Science Fair Project Idea

Scientific Method

Cryopreservation—storing seeds in ultra-cold liquid nitrogen—is one method for maintaining plant genetic stocks in seed banks. Can seeds withstand a really deep freeze and still germinate? Read more

Crystal Chemistry: Weekly Science Project Idea/Home Science Activity Spotlight

Blog Post

In this week's spotlight: a pair of projects that extend a classic chemistry exploration—growing crystals. Growing crystals makes for excellent and engaging hands-on, kitchen science that can be enjoyed by all ages, but what determines the size of the crystals? Explore the relationship between temperature and crystal formation in these science project and activity procedures: Crazy Crystal Creations: How to Grow the Best and the Largest Crystals (full Science Buddies Project… Read more

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