Ninth Grade Science Experiments (Page 3)

How Far Will It Fly? Build & Test Paper Planes with Different Drag

Science Fair Project Idea

Scientific Method

Just one sheet of paper can lead to a whole lot of fun. How? Paper planes! All you have to know is how to fold and you can have a simple plane in a matter of minutes! But what design should you use to build the best plane? In this aerodynamics science project, you will change the basic design of a paper plane and see how this affects its flight. Specifically, you will increase how much drag the plane experiences and see if this changes how far the paper plane flies. There is a lot of cool… Read more

When Science is Sweet: Growing Rock Candy Crystals

Science Fair Project Idea

Scientific Method

Here is a riddle for you: what kind of rock grows? The answer is: rock candy! This delicious candy is actually crystallized sugar and you can "grow" it from a sugar-water solution. In this science fair project you'll learn how to grow your very own rock candy and determine if using seed crystals changes the growth rate of your sugar crystals. Read more

Ball Launcher Challenge

Science Fair Project Idea

Engineering Design Process

Try your hand at this engineering challenge. Can you build a "launcher" device to launch a ball as far as possible and a "receiver" to catch it? Building a receiver provides an extra twist to a traditional catapult project. Add to the challenge by using a limited set of materials to build your machine and calculate a score based on your throw distance and materials used. Read more

Baking Soda and Vinegar Rockets

Science Fair Project Idea

Scientific Method

Watching a spacecraft launch is an amazing experience. It is thrilling to see it lift off and escape Earth's gravity. Did you know that it takes a chemical reaction to get a spacecraft into space? Every time you see a one blast off, you are watching chemistry at work. In this chemistry science fair project, you will also get to blast an object into the air. You will not be using the same fuel that NASA uses for the rockets that launch their spacecrafts; instead, you will use two simple… Read more

Star Wars STEM for May the 4th Be With You

Blog Post

May the 4th be with you! Tie simple science explorations to Star Wars for Star Wars Day. Connect favorite characters, epic movie scenes, Star Wars lore, and more with hands-on STEM learning in the classroom or for family science with kids at home. May the 4th Be with You (AKA Star Wars Day) May 4th is a day of epic proportions for Star Wars fans. Echoing the classic movie line, the day is celebrated as May the 4th Be with You. (You know, the… Read more

14 Paper STEM Activities

Blog Post

Looking for last-minute STEM ideas for the end of the year, for after testing, for a classroom warmup, or for a rainy day at home? Try one of these paper-based STEM activities! STEM Activities that Use Paper! Doing science and engineering activities doesn't have to require lots of materials. If you are looking for something to do with students in the classroom or with kids at home, an engaging STEM learning experience might be just a stack of… Read more

Turn Milk into Plastic

STEM Activity

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Have you ever heard that plastic can be made out of milk? If this sounds like something made-up to you, you may be surprised to learn that from the early 1900s until about 1945, milk was commonly used to make many different plastic ornaments, including buttons, decorative buckles, beads and other jewelry, fountain pens, the backings for hand-held mirrors, and fancy comb and brush sets. Milk plastic (usually called casein plastic) was even used to make jewelry for Queen Mary of England! In… Read more

Design and Launch Bottle Rockets

STEM Activity

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Soda bottle rockets are a safe and fun way to get into rocketry. If you want to discover what makes rockets fly, this is an activity for you. You can even add different features, like fins, a nose cone, and a parachute to find out how these alter the flight! Try it out! Read more

Do-It-Yourself DNA

STEM Activity

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Have you ever wondered how scientists get a sample of DNA from a plant, animal, or other organism? All living organisms have DNA. DNA, which is short for deoxyribonucleic acid, is the blueprint for almost everything that happens inside the cells of an organism — overall, it tells the organism how to develop and function. DNA is so important that it can be found in nearly every cell of a living organism. In this activity, you will make your own DNA extraction kit from household… Read more

Rubber Band Car Challenge

Science Fair Project Idea

Engineering Design Process

In this engineering challenge, you will build a car powered by nothing but a rubber band. The farther the car goes, and the fewer materials you use to build it, the higher your score. The 2024 Science Buddies Engineering Challenge is over, but you can check out this page to see our other past engineering challenges and what this year's challenge will be! Teachers, lesson plan versions of this challenge are also available. Read more

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