Experiments where the kids can learn and make noise/music in the process are always fun. We really enjoyed banging on the pan like a drum for the How to See Sound Experiment,
Musical Jars Science Experiment Video
- Set of Glasses of equal shape and size
- Metal Spoon
- Food Coloring (optional)
Step 1 – Begin with empty glass jars of the same shape and size. Use the metal spoon to tap on each one. You’ll notice that each sound is the same. Now let’s find out if we can make the sounds different.
Step 2 – Pour water into each jar. Make sure that the water level is different in each jar.
Step 3 – Add food coloring to each jar to make it easier to see the different water levels. You can use the same color in each jar or use a rainbow of colors like we did. (Optional)
Step 4 – Use the same metal spoon to tap on the jars again. Listen carefully so you can hear how the sounds have changed.
How Does the Experiment Work?
Tapping on the jars with the spoon causes them to vibrate and make a sound. When the jars were all empty the vibrations and the sounds were the same. However, adding water to the jars cause the vibrations (and sound) to change.
The more something vibrates, the higher the sound will be. In addition, the more water there is in the jar, the less it will vibrate.
That means, a jar filled with less water will produce a higher sound AND a jar filled with more water will produce a lower sound.
More Science Fun
After your kids understand the concepts of the experiment, turn it into a music lesson. Take turns playing songs and guessing the melody.
I hope you enjoyed the experiment. Here’s some printable instructions