Eleventh Grade Science Experiments (Page 11)

STEM Activity

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Have you ever been fascinated by things that glow in the dark? It can be a lot of fun to play with bracelets, wands, and other toys that are glow-in-the-dark, like some stickers and creepy, crawly, plastic insects! Have you ever wanted to make something at home that glows? It turns out that it is not that hard to do — all you need is tonic water and a black light! Some common household chemicals can also affect this beverage's glow. In this science activity, you will make tonic water glow… Read more

How Much Weight Can Your Boat Float?

Science Fair Project Idea

Scientific Method

Have you ever wondered how a ship made of steel can float? Or better yet, how can a steel ship carry a heavy load without sinking? In this science project you will make little "boats" out of aluminum foil to investigate how their size and shape affects much weight they can carry and how this relates to the density of water. Read more

Cold Pack Chemistry: Where Does the Heat Go?

Science Fair Project Idea

Scientific Method

Instant cold packs are popular with coaches and parents for treating minor bumps and bruises. The instant cold packs are not pre-cooled—you just squeeze the cold pack and its starts to get cold. So how does it work? In this chemistry science fair project, you will investigate the chemical reaction that occurs in instant cold packs. Read more

Recycle Urine into Drinking Water for Astronauts

Science Fair Project Idea

Scientific Method

Have you ever wondered how astronauts eat and drink in space? Where does their food and water come from? Water, in particular, is quite heavy, so delivering it to space is incredibly expensive. Instead, on spaceships and space stations like the International Space Station (ISS), it is most efficient to recycle water. This includes recycling urine! In this science project, you will use methods similar to those used on the ISS to investigate how urine can be recycled into clean drinking water. Read more

2026 Ball Run Challenge

Science Fair Project Idea

Engineering Design Process

In this engineering challenge, you will build a ball run from paper and tape, but there's a twist! You want to make your ball run as slow as possible. How long can you make it take for the ball to get from the entrance to the exit? Read more

Make a Lemon Volcano

STEM Activity

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Make a colorful erupting volcano in your kitchen with lemons and baking soda! Read more

Parachutes: Does Size Matter?

Science Fair Project Idea

Scientific Method

How does a parachute work? Do bigger parachutes work better than smaller parachutes? Find out in this science project if the size of the parachute matters. Read more

Build a Miniature Self-Driving Car

Science Fair Project Idea

Engineering Design Process

How do self-driving cars stay on the road? How do vehicles with autonomous or driver-assist features automatically brake, steer around obstacles, or perform tasks like adaptive cruise control? Experiment with these behaviors and more in this science project as you build and program your own autonomous Arduino robot. Read more

Removing Microplastics from Water with Ferrofluids

Science Fair Project Idea

Scientific Method

Have you ever walked next to your favorite ocean, lake, or creek and seen plastic waste everywhere? Have you ever thought about how much plastic breaks down into microplastics and pollutes waterways? Scientists are coming up with new ways to remove these microplastics from our waterways, and now you can test them out for yourself at home. Read more

Teaching Machines to Understand Sign Language

Science Fair Project Idea

Engineering Design Process

Can AI understand human language? In the future, AI could aid in emergency interpretive service in the hospital when translators aren't available. But can current AI algorithms understand non-verbal languages like sign language? In this science project, you will test whether AI can learn sign language gestures or phrases to see if it can be used for interpretation. Read more

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