Science Fair Projects for 7th Graders​​

Science fair projects for 7th graders are a step up in complexity. Because 7th graders have a better grasp of science concepts, they’re expected to practice the scientific method in the way they approach their experiments–which includes starting with a hypothesis and then conducting processes to prove or disprove it. 

Of course, just because these science fair projects are a bit more challenging doesn’t mean that they can’t still be fun! Home Science Tools’ science kits are designed to help kids learn important science lessons through easy-to-do and enjoyable experiments. Here are some easy science fair projects for kids to explore:

Potato Battery

There are many different types of batteries, but all of them generate electricity in the same way–through a chemical reaction. This chemical reaction typically happens between two pieces of metal (electrodes) and a liquid or paste (electrolyte). Potatoes contain a lot of moisture, and this moisture works very well as an electrolyte. This means that when you add some metal electrodes to the root crop, you can create a potato battery!

Creating a potato battery will require some tools you won’t typically have in the house, such as electrodes and a multimeter. Home Science Tools’ Veggie Power Battery Kit for Science Buddies gives you everything you need to make this science fair project work! Once you have your battery, you can have fun with some science project name suggestions for the spud.

Rainbow Fire

With Home Science Tools’ Rainbow Fire Kit for Science Buddies, your child can find out how different chemical compounds react with fire and how these reactions emit different colors. Besides the lesson on chemical reactions, this kit also touches on some astronomy. Astronomers actually determine the atomic composition of different stars by measuring the spectrum of light they emit!

Bacteria Colonies

Bacteria grow all around us, and it’s fun to find out just how much of it exists in everyday items. With Home Science Tools’ Bacteria Growing Kit for Science Buddies, your student can culture their own microbe colony from bacteria swabbed from everyday household items. 

They can explore bacteria on their hands, from their phones, or on the kitchen counter, and learn how to isolate and grow bacteria colonies. Some science fair project ideas include comparing which household surface contains the most germs or checking if a pet’s mouth is dirtier than its owner’s!

Crystal Radio

A crystal radio is the simplest type of radio receiver as it doesn’t need any external power; instead, it only uses sound waves to produce sound. Its name comes from its most important component, a crystal detector (called a ‘diode’), which is made from crystalline minerals (such as galena). 

Home Science Tools’ Build Your Own Crystal Radio Kit for Science Buddies allows you to make this popular form of receiver with all the necessary tools. It’s a great way to allow your 7th grader to present a science fair project on radio waves while learning the basic radio circuit elements required to receive radio signals.

Find Science Fair Project Kits on Home Science Tools

Home Science Tools is dedicated to making science fun and accessible with home science kits that are easy to do! You can explore different options, from easy experiments you can do at home to explorative activities that make for great science fair projects for 7th graders. Check out our catalog in time for your child’s next science fair presentation!