Eleventh Grade Science Experiments (Page 30)

Science Fair Project Idea

Scientific Method

Can you imagine clothing, handbags, or shoes made from seaweed or spider silk? To become more sustainable, the textile industry is looking for ways to develop more eco-friendly fabrics. Biofabrics derived from living organisms such as seaweed or bacteria have been proposed as a potential alternative to conventional fibers. In this science project, you will make several biofabrics from alginate (seaweed) and conduct tests to find out which one is most suitable as a textile replacement. Read more

Make the Fastest Rubber Band Paddle Boat

Science Fair Project Idea

Engineering Design Process

Rubber band paddle boats are a fun bathtub or pool toy that you can build yourself. How do you make a boat that goes the fastest? Find out in this project as you build and test your own boat. Read more

Measure Surface Tension with a Penny

STEM Activity

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Have you ever noticed how, on a rainy day, water forms droplets on a window? Why does it do that instead of just spreading out evenly over the whole surface? And what could that possibly have to do with washing the dishes or doing laundry? It all has to do with something called surface tension. Try this activity to learn more! Read more

Plants on the Move! Experiments with Phototropism

Science Fair Project Idea

Scientific Method

Plants move—not very quickly compared to animals, but they do move. Their roots grow downward in response to gravity, and their stems grow upward toward the Sun. In this plant biology science fair project, you will investigate how young plants respond through movement to light. Read more

Which Fruits Can Ruin Your Gelatin Dessert?

Science Fair Project Idea

Scientific Method

Why are some fruits, like pineapple, not recommended for adding to gelatin? It is because the gelatin may not solidify well if it has these fruits in it. In this science project you will determine whether certain enzymes in some fruits are preventing gelatin from solidifying, and whether there is a way to still include these fruits without ruining your gelatin dessert. It is an experiment with edible results! Read more

Which Type of Water is the Hardest?

Science Fair Project Idea

Scientific Method

Do you want your hair to be shiny after you wash it? Do you want your clothes to stay bright and soft after laundering, and last a long time? You might think that a special shampoo or detergent can make this happen, but in this chemistry science fair project, you'll discover that how well people and things get clean has a lot more to do with the type of water used for washing than any special shampoo or soap. Did you know that water can be classified as either soft or hard? Soft water lathers… Read more

Build a River Model!

STEM Activity

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Earth is a very watery place! More than 70% of the Earth's surface is covered by water. This is due to the many water bodies that can be found everywhere on our planet. What types of water bodies do you know? They are all very distinct from one another in their appearance, size, shape, and movement. In this activity, you will explore the distinct characteristics of a river by creating a river model inside a pan with sand, pebbles, and real water! After that, you can continue to model other… Read more

Build an 'Impossible' Wind-Powered Car

Science Fair Project Idea

Engineering Design Process

Is it possible for an entirely wind-powered vehicle to travel directly downwind faster than the wind? This might seem counterintuitive or like it would violate the law of conservation of energy. After all, any good scientist knows that perpetual motion machines are impossible. However, as demonstrated by YouTubers Rick Cavallaro, Derek Muller (Veritasium), and Xyla Foxlin, you can take advantage of some tricky physics to make this vehicle work. Can you build—or even improve—your own… Read more

Earth Day Science Projects and Activities

Blog Post

Use these free science projects and STEM lessons and activities to celebrate Earth Day and explore related environmental science aimed at using STEM to increase sustainability, protect the Earth, and solve challenges we face for the future. Since its start in 1970, Earth Day has become a global day of activism and learning about environmental topics related to protection of the Earth, its natural resources, and species. Climate change, global warming,… Read more

Forces and Laws of Motion Lessons

Blog Post

Covering forces and laws of motion in science class? Try one of these five free lesson plans to help students get hands-on with physics. Teach Forces and Motion with 5 Free experiments Teaching elementary and middle school students about forces, motion, energy, and Newton's laws is an important part of standards-based science curriculum. At Science Buddies, we know that getting kids hands-on with these concepts can be a powerful way to help them learn… Read more

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