Ninth Grade Science Projects (Page 37)

Make an Automatic Evaporative Cooling System

Science Fair Project Idea

Engineering Design Process

You probably know that sweat helps cool your skin on a hot day because of evaporation. But do you think you can use evaporation to cool a building? Evaporative cooling systems could provide a more environmentally-friendly alternative to traditional air conditioning. In this engineering project you will build and try to optimize your own model evaporative cooling system. Read more

Make an Automatic Pill Dispenser

Science Fair Project Idea

Engineering Design Process

Remembering to take medicine at the right time can be hard, especially if you need to take multiple medications at different times of day. It might not be a big deal if you forget to take your daily multivitamin, but for some people, forgetting to take medication at the right time can be dangerous. What if you had a device that could not only set off an alarm at the right time, but also automatically dispense the right pills for you? In this project, you will build an automatic medicine… Read more

'Make Mine Medium-Rare': Heat Conduction in Steak

Science Fair Project Idea

Scientific Method

How do you like your steak? The internal temperatures for beefsteaks at various levels of "doneness" are as follows: medium-rare, 145°F; medium, 155°F; medium-well, 165°F; and well-done, 170°F. What factors determine how long you have to cook a steak to reach the desired temperature? The temperature of the steak before you start to cook it will clearly be important. The temperature the steak is cooked at will also be a factor. And of course, the thickness of the steak will… Read more

Make Popping Boba Balls Out of Your Drinks

Science Fair Project Idea

Scientific Method

Forget drinking your juice. Instead, try snacking on it! Use the steps and recipes in this food science project to transform drinks into semi-solid balls that pop in your mouth. The technique is called spherification and it is part of a larger food science trend called molecular gastronomy— but we just call it yummy science! Read more

Make Soft Robotic Skin

Science Fair Project Idea

Engineering Design Process

When you think about robots, do you think of something made from metal? What if robots could have stretchy, flexible skin just like humans? How would they detect when someone tapped them on the shoulder or something rubbed against their arm? In this project, you will learn how to make artificial robotic skin using flexible rubber with an embedded conductive fabric. You can also connect the artificial skin to a microcontroller and use it to control outputs like LEDs or motors. Read more

Make Sustainable Fabrics from Seaweed

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 Your Own Electric Guitar Pickup

Science Fair Project Idea

Scientific Method

If you like playing electric guitar, this could be a cool project for you. Have you ever wondered how an electric guitar works? In this project you'll wind one or more of your own electric guitar pickups and test them out in an inexpensive electric guitar. How will the sound change with the number of turns you use in the coil? Or with the strength of the magnets you use? Read more

Make Your Own Low-Power AM Radio Transmitter

Science Fair Project Idea

Scientific Method

Have you ever wondered how an AM radio station works? In this project you will learn the basics of how your favorite songs are transmitted by a radio station, by building your own simple AM radio transmitter. You will learn the basics of how a transmitter works, and how you are able to tune to your favorite station and listen to music. Read more

Make Your Own Piezoelectric Pickup for Acoustic Guitar

Science Fair Project Idea

Scientific Method

In this project you'll learn how to make a piezoelectric pickup for acoustic guitar using inexpensive components. You can then connect your acoustic guitar to an amplifier, and record your own music. If you are interested in electronics and like playing acoustic guitar, this could be the perfect project for you. Read more

Make Your Own Shampoo and Test How It Performs!

Science Fair Project Idea

Scientific Method

Do you love it when your hair is nice and fresh? The key to keeping your hair nice and clean is to use a good shampoo. But with so many different products in the store, how do you know which one works best for you? In this science project, you will put a variety of shampoos to the test, including your own homemade organic shampoo recipes. Do you think these will perform better than a store-bought product? Read more

Ninth Grade Science Projects (633 results)

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