Middle School Science Experiments (Page 129)

Soil Science: Study Microorganisms in Winogradsky Columns

STEM Activity

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Our planet recycles and reuses everything on it that is needed to support life. It is an amazing, giant recycling system called the biogeochemical cycle. You can actually model this on a small scale by using a plastic bottle and mud to build what is called a Winogradsky column. In this activity, you will build your own Winogradsky columns and investigate how including different nutrients can affect which soil microorganisms flourish and which fail. Read more

Solar Power Roundup

Blog Post

Hands-on STEM projects for K-12 students interested in alternative energy and the power of the Sun. Solar Science Projects for Students A Cool Way to Make Electricity: Solar Cell Power Output vs. TemperatureAre You in Hot Water? Use the Sun's Energy to Heat Your Own WaterBuild a Solar-Powered BristlebotCold Room? Heat It Up with A Homemade Solar Air HeaterFrom Brine to Beverage: Solar-Powered Salt RemovalGet Something for Nothing: Free Power from the Sun!How Does Solar Cell Output Vary… Read more

Solving a 'Windy' Problem

Science Fair Project Idea

Scientific Method

The wind is a powerful force, enough to erode whole hillsides over time. Building structures in windy environments challenge civil engineers with special safety concerns. A wall in a windy area can either shield you from the cold or fall down on you. Learn a few tricks on how to design walls in windy places. Read more

Speed Quest

Science Fair Project Idea

Scientific Method

Do you like to watch the Olympics and see new world records get set? Have you ever wondered how fast you'd need to go to achieve that world record? Well, in this sports science fair project, you'll find out how to compute speeds needed to achieve world records. Not only that, but you'll learn what speed is, and how to measure it in almost anything that moves! So head for the track, you're on a search for speed! Read more

Spilling Candy: Weekly Science Project Idea and Home Science Activity Spotlight

Blog Post

In this week's spotlight: a pair of physics science projects that invite students and families to explore the granularity of materials. Can you pour candy in a way that is similar to pouring water? What determines whether or not a material can "flow" in this way? Which variables affect how smoothly the material flows? With your Halloween candy bag at hand, you can put it to the test with your own "candy waterfall" in these hands-on science project and family science… Read more

Spinning Colors: How Do Primary Colors Combine to Make New Colors?

Science Fair Project Idea

Scientific Method

Did you know that sunlight can actually be separated into the colors of the rainbow? And the light of different colors can be added together to make white light or new colors. This is an area of study where art and science overlap. In this science fair project, you will explore this area by drawing or painting "pie slices" onto a white circle and then combining them to make a new color by spinning the wheel using an electric drill. Read more

Spot the Dot Eye Science

Blog Post

Can you make things seem to disappear by taking advantage of how your brain and eyes work together? Put it to the test in this week's family science activity! In the image above, can you see all three colored dots? Is one harder to see than the others? What will happen if you lift the wax paper off of the background paper, keeping it between your eyes and the dots and gradually increasing the distance between the dots and the wax paper? In this week's family-friendly science activity,… Read more

Squirmy Wormy: Which Soil Type Do Earthworms Like Best?

Science Fair Project Idea

Scientific Method

Do you think worms are gross? Or that they are only good for birds or fish to eat? Well, in this zoology science project, you will find out that this lowly animal helps to put food on your table, too, by all the hard work that it does in the dirt. In this science project, you will discover in what kind of soil it likes to do its work. It is wiggly good fun! Read more

Strength of Glues

Science Fair Project Idea

Scientific Method

Try gluing wood together with different types of glue, e.g.: regular white glue, yellow wood glue, cyanoacrylate (super glue), and Liquid Nails. Glue a short piece (5-8 cm) to the center of a longer piece (15-30 cm). After the glue has dried for the recommended time, drill a small hole through the center of the joint, big enough to pass through a piece of coat-hanger wire. Cut a length of coat hanger wire, pass it through the hole, and twist the ends together to form a loop. Place the ends… Read more

Sunset Colors in a Glass

STEM Activity

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Have you ever watched a sunset and wondered why the sky suddenly changes from blue to orange and red? Even during the day, the sky can have multiple colors ranging from bright blue to grey or white. Where do these colors come from? In this activity you will find out, and simulate your own sunset in a glass! Ready to let the sun go down? Read more

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