Summaries About Sections I Took Notes On

Section Summaries

Section 1:

In this section we learned various things about sound and how it works. Similar to what we learned in the Bill Nye video, “Sound is a disturbance that travels through a medium as a longitudinal wave”. I found it interesting that all sounds need vibration, and vibration needs a medium, so in empty space where there is no air, sound just doesn’t exist. I knew that sound couldn’t exist before, but I never knew why. I also learned about various properties of the medium that sound can travel through that affect the way sound travels, like the elasticity, density and temperature of the medium. The section ended with a brief history and explanation of supersonic travel.

Section 2:

In the previous section one of the things I learned about was the properties of the medium sound travels through. In this section, I learned about properties of sound itself. Those properties include intensity, loudness, frequency, pitch and resonance. The section continued with an explanation of the Doppler effect, and ended with a brief explanation about how the sound barrier for supersonic planes work.