Last week, we did a few more fun activities to get more comfortable with the sound concepts we've been learning. We saw how our voices affected an online oscilloscope and made instruments out of straws to see how the length of the instrument changed the pitch. See the videos and pictures below :) In the first two pictures, we see a sound with the same frequency and pitch that has a decreasing amplitude toward the right side...this means the volume gets a little softer while the pitch stayed the same. In the last picture, the frequency is once again pretty consistent, but look at how loud their sound is to the right of that screen! Here are our instruments!
On the left we have the shorter instruments and on the right, the longer instruments. Can you hear the difference in pitch???
More on this later this week :)
1 Comment
Janell Kauffman
12/2/2018 12:54:43 pm
Hi! I love all the information you post on your website for your students. I teach 5th grade in Goochland County Virginia. I have used your videos and blog posts as inspiration for my science of sound unit. Thank you for sharing so much knowledge and hands-on exploration for your students.
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