The hypothesis is that a sound barrier will reduce noise and that a concrete or wooden barrier will more effectively reduce highway traffic noise when compared to an earth berm or vegetation.

You will measure decibel readings with and without a sound barrier, count traffic, and compare different types of sound barriers to see which is the most effective in reducing highway noise.

You will need 3 digital decibel meters, 3 decibel meter calibrators, a hard hat, a safety vest, 3 clipboards, a 30m tape measure, a 5m tape measure, 3 watches, and a camera.

The results indicate that the sound barrier did reduce highway noise, and the earth berm had the greatest noise reduction at all decibel meter positions, and the concrete wall had the second highest noise reduction at all of the decibel meter positions.

This science project is interesting and unique because it allows us to compare different types of sound barriers to see which is the most effective in reducing highway noise.

Experiment variations to consider include testing different types of sound barriers, such as metal or plastic, or testing different distances from the sound barrier.

Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!