<p align="right">Last Update: <font color="#4f81bd">January 02, 2025</font></p> ## BIG IDEAS - Sound waves are ==longitudinal== waves. - There are regions of ==compression== (high pressure) and ==rarefaction== (low pressure). - Sound waves increase in speed with an increase in temperature. - Sound travels faster in dense medium. --- ### Textbook Alignment Walker 14-4 Sound Waves ---- ### Major Categories - Infrasonic waves - Frequencies below 20 Hz - Example - Earthquakes - Audible waves - A range of frequencies - 20 Hz to 20,000 Hz - Ultrasonic waves - Frequencies above 20,000 Hz - Example - Dog whistles ### Slide Deck <div style="position: relative; width: 100%; height: 0; padding-top: 56.2500%; padding-bottom: 0; box-shadow: 0 2px 8px 0 rgba(63,69,81,0.16); margin-top: 1.6em; margin-bottom: 0.9em; overflow: hidden; border-radius: 8px; will-change: transform;"> <iframe loading="lazy" style="position: absolute; width: 100%; height: 100%; top: 0; left: 0; border: none; padding: 0;margin: 0;" src="https://www.canva.com/design/DAGPwOSDSBg/Q7tM2MVFgxdHNgp-dNlqLQ/view?embed" allowfullscreen="allowfullscreen" allow="fullscreen"> </iframe> </div> ### Video <iframe width="100%" height="480" style="border:0;" scrolling="no" src="https://go.screenpal.com/player/c06wDvVEK3I?width=100%&height=480&ff=1&title=0" allowfullscreen="true"></iframe> ### Related Topics --- [[Home|Home]] | [[Oscillations]] | [[Waves]] | [[Module 0 Sound]] | [[Module 1 Sound Waves]] | [[Module 2 Speed of Sound]] | [[Module 3 Sound Intensity]] | [[Module 4 Doppler Effect]] | [[Electromagnetic radiation]]