8th Grade Science Fair Projects and Classroom Experiments
Shared from WeAreTeachers.com
February 27, 2023by
School Aids, Inc, Elaine Swart
Did somebody say Rube Goldberg machine?
Eighth grade science is often all about the science fair, so we’ve rounded up lots of terrific project ideas for students to try. Science teachers will find ideas here, too, with hands-on activities and experiments kids can do in the classroom. These interactive ideas will teach kids so much about science and the world around them!
1. Water plants with various liquids
In this experiment, kids water plants with different liquids, like rainwater, tap water, salt water, and even soda. They might be surprised at the results!
First, use the steps at the link to build a simple light bulb with a jar, some wire, and a 6-volt battery. Then, turn it into an eighth grade science fair experiment by tinkering with the various materials to make a light bulb that lasts longer, burns brighter, or is powered by an alternative source.
This is a project that can be tweaked in a variety of ways. Challenge your students to make the model as shown at the link. Or encourage them to think of ways they can improve upon the design. Can they build a hand that can pick up a ball? How about one that can pluck up a piece of string? So many possibilities!
Sports-loving kids will enjoy the chance to learn just how many valuable electrolytes their favorite sports drinks contain. Compare them with water or orange juice for a cool science fair project. You’ll need a few special supplies, like a multimeter and an ohm resistor, but they’re inexpensive and easy to find.
Newton’s cradle is a fascinating way of demonstrating momentum and energy transfer. Follow the directions at the link to build one, or challenge eighth grade science students to experiment with their own construction methods.
Kids may have created marble roller coasters before, but have they ever built one with a loop-the-loop? They’ll have to experiment to find out which initial height gives a marble the speed it needs to complete the journey.
Paper seems smooth and slides apart easily, right? This experiment challenges that notion by interleaving multiple pieces of paper and testing their strength. It’s an easy project with fascinating results.
Create a machine to complete a simple task in the most complicated fashion! This is a neat eighth grade science project because it allows you to use a variety of physics concepts in a fun way. See an example in this
Who says science can’t be delicious? Plus, any experiment where you get to use dry ice is always fun (take proper safety precautions, please). This yummy project teaches chemical reactions and, of course, requires a taste test.
12. Examine the connection between personality and memory
Do introverts have better memories than extroverts? This science project aims to find out. Round up some willing volunteers and administer the Meyers-Briggs personality test, then challenge your subjects with a memory test. The results may or may not surprise you!
Find out if all those laundry detergent commercials are really telling the truth with this eighth grade science fair experiment. Test their cleaning power on a variety of stains and fabrics, and analyze your results.
Pollution has a profound impact on all walks of life. This project involves students setting up an aquarium and introducing various pollutants to the water in order to observe and document the effects on the aquatic life within the tank.
This high school experiment can be adapted for an eighth grade experiment. Students will investigate the physical properties of a variety of liquids by comparing their density, viscosity, and surface tension through hands-on experimentation.
Renewable energy and how to capture it is so important, now more than ever. In this experiment, students will dive into the exciting world of hydropower and learn how to harness the power of water to do some pretty cool stuff. Students will be amazed at the prospect of using the power of water to light up a bulb, heat up a cup of tea, or even lift up household objects.
Since your students have already examined the connection between personality and memory, now they’ll study the effects of different types of music on memory. Small groups will listen to a different genre of music before taking a test, then compare the results and see if there’s a correlation between the type of music and memory retention.