Middle School Science Experiments (Page 126)

Just Because She Wanted To: Doing Fun Science at Home during School Closures (Activity #13)

Blog Post

Follow along with a Science Buddies parent who is using family STEM activities to keep her kids learning at home during the COVID-19 school shutdown. New posts every Monday, Wednesday, and Friday. Today's adventure... building and playing with air cannons. Letting My Child Lead the Way Have I mentioned that I'm a bit of an obsessive planner? That hasn't been working out so well for me lately. We've had to throw away the plan a number of times. So,… Read more

Keep Your Candy Cool With the Power of Evaporation!

Science Fair Project Idea

Scientific Method

Did you know that your body has a built-in cooler? And it might not be what you think! Sweat is produced when you are hot, but its purpose is actually to cool your body as the water in it evaporates from your skin. In this science fair project, you'll use the energy produced when water evaporates to cool down chocolate-covered candy so it doesn't melt. Read more

Kitchen Concoctions! (Awesome Summer Science Experiments)

Blog Post

Check in each week at Science Buddies this summer for our Awesome Summer Science Experiments series! Each week, we'll highlight a few activities for awesome science and engineering kids can do at home. We've got a whole summer of fun STEM themes lined up for kids of all ages — for free. This week: awesome summer science experiments in the kitchen! Awesome Kitchen Science Concoctions Head to the kitchen this week for science you can eat! Many of… Read more

Ladybug Spots and Breeding

Science Fair Project Idea

Scientific Method

Ladybugs are common insects in North American gardens that prey upon aphids, making them all the rage in biological pest control. Ladybugs can be bred in captivity making them a good insect to study. Just chop off an aphid infested plant stem for food, make a water soaked cotton ball for water, and add to a small plastic container with a lid to make a breeding box. You can use ladybugs collected from the wild, or buy ladybugs from your local nursery. The most common species is the 12-spotted… Read more

Leaky Clues to Dam Design: How Reservoir Height Affects Hydroelectric Power Production

Science Fair Project Idea

Scientific Method

It's hard to believe that the same water that you use every day to quench your thirst, cook with, bathe in, swim in, and wash your clothes and dishes, is capable of another trick—it can make electricity! Electricity can be generated through the flow or through the fall of water. A big, fast-flowing river, for instance, contains a lot of moving energy that provides enough pressure to turn the blades of a turbine and run an electric generator. This same pressure can also be created though… Read more

Learning Your A, G, C's (and T, too)

Science Fair Project Idea

Scientific Method

This is a project about the "molecular alphabet" of DNA. With just four "letters," it manages to keep track of the plan for an entire person, and keep a complete copy in nearly every cell. This project will help you start learning this new alphabet. Read more

LED Traffic Glove: Build a Safety Device to Direct Traffic

Science Fair Project Idea

Scientific Method

From traffic safety lights to neon signs, lights have a way of getting peoples' attention. So it makes sense that if a person wants to get attention, wearing clothing with built-in lights might help. These types of clothing, called electronic textiles (e-textiles for short), or wearable electronics, already exist. Instead of using hard surfaces for circuits (like inside your computer or cell phone), e-textiles weave electrical parts like batteries, wires, and lights directly into wearable… Read more

Lift a Load using Liquids

STEM Activity

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No one, not even a very strong human, is strong enough to lift a truck. However, our brains are smart enough to create a tool that can lift heavy objects for us: hydraulic lifts! You find them in body shops, on skyscraper construction sites, in wheelchair lifts, and in dentist chairs, and you will even build one in this activity! Try it out and discover how much more you can lift. Read more

Lights, Camera, (Capillary) Action!

STEM Activity

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How do trees suck water all the way up to their leaves? How do paper towels soak up a spill? Are these things related? Try this project to learn about capillary action, and repeat a classic demonstration from over 100 years ago! Read more

Linear vs. Logarithmic Changes: What Works Best for Human Senses?

Science Fair Project Idea

Scientific Method

If you want to get your friend's attention at a crowded sporting event with lots of people cheering, you need to shout. If you're trying to do the same thing in a quiet library, a whisper works. The detection limit for each of our senses depends on the amount of "background" stimulation that is already present. This project uses an LED control circuit to investigate detection of changes in light levels. Read more

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