Eighth Grade Science Experiments (Page 128)

Science Fair Project Idea

Scientific Method

The Stroop effect describes an experiment about the time it takes to name the color of printed words. When you try to name the color in which color words are printed, it takes longer when the color word differs from the ink color than when the color word is the same as the ink color. This project is an interesting variation: what happens if you 'warp' the words into a curved shape that is harder to recognize as a word? Will the Stroop effect still happen? How 'warped' do the words have to be in… Read more

Water Drops and Sparks! Experimenting with a Kelvin Electrostatic Generator

Science Fair Project Idea

Scientific Method

Water is an interesting thing. We drink it, swim in it, and wash ourselves with it. We can get energy from water by damming it and sending it through a turbine. But did you know that we can use the natural electrical charges present in water and a Kelvin electrostatic generator to create sparks? You can even use a Kelvin electrostatic generator to temporarily light a bulb! Now that is one bright idea! Read more

Water Filtration

STEM Activity

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Water is one of the most important resources for life. Here on Earth, we often take it for granted — we can easily get a glass of water from the tap whenever we’re thirsty. But imagine being an astronaut orbiting hundreds of miles above our planet. In space, every drop of water is precious, and there’s no tap to turn on. Transporting water from Earth to the ISS is incredibly expensive and impractical due to the limited cargo space and the high cost of launching supplies. To address this,… Read more

Water from Air: Experimenting with Dew Traps

Science Fair Project Idea

Scientific Method

Most of us live in areas where sources of water exist nearby as oceans, rivers, lakes, ponds, streams, reservoirs, wells, or even underground streams. But in some places, like the desert, water is hard to find and a precious resource. In this environmental engineering science project, you will investigate one way that people living in arid regions can collect water inexpensively: dew traps. Read more

Water Play: Summer of STEM (Week 6)

Blog Post

Join Science Buddies this summer for virtual summer camp! Each week, we'll have a fun STEM theme for kids of all ages, suggestions for simple hands-on activities, book picks, and more. With our Summer of STEM, we'll keep you and your kids inspired all summer with creative and innovative science and engineering activities — for free. This week: make a splash with water play and water-based science experiments! Water Play Science Week 6 focuses on… Read more

Water Striders & Surface Tension

Science Fair Project Idea

Scientific Method

Water striders (also called water bugs, pond skippers, etc.) are insects that can hop around on the surface of water (Figure 1). Unlike boats or other floating objects that are partially submerged and held up by the resulting buoyant force, water striders are held up by surface tension. Figure 1. Water striders (image credit Isaka Yoji). You can build your own water striders using thin wire (Figure 2 and summary video). Do some background research about… Read more

Wearable Air Quality Sensor

STEM Activity

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Wearables are found all over the biomedical world: heart rate monitors, EKG patches, braces, etc. In this project, you will make your own wearable air quality sensor that notifies you of high-risk air. You can attach the sensor patch on any existing clothing or even make a standalone patch that you can wear as a necklace or a bracelet. Read more

Wearable RGB LED Unicorn Horn

STEM Activity

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Sewable circuits are a fun way to mix electronics and arts and crafts by sewing circuits into clothing or fabric. This sewable circuit focuses on creating a unicorn horn with a programmable red-green-blue (RGB) LED in the tip that changes colors. You will use conductive thread to make the circuit, but your stitched lines will also form the spiral lines of the unicorn horn. Read more

Weaving a Wearable Touch Sensor

STEM Activity

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Sensors are everywhere—on your phone, in your car, and even at the grocery store. Learn how to craft your own wearable sensor that you can put on your clothing. Using a simple and easy crafting method, you will be able to weave your own capacitive touch sensor patch that will detect when someone touches the fabric. You can use the sensor to turn on an LED, buzzer, or motor when it detects touch! Read more

Weekly Science Project Idea/Home Science Activity Spotlight: Mixing Up Some Science Fun

Blog Post

Are you looking for a school science project topic or a hands-on science activity to do on the weekend or with your family? Science Buddies' science projects come in all sizes! In this week's spotlight: a hands-on kitchen science investigation. What happens when you mix sand and water and how does the resulting mixture compare to a mixture of cornstarch and water? Learn more about mixtures, solutions, and colloids in this pair of fun, tactile science projects: Making Mixtures:… Read more

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