1 / 7

Sound Waves

Sound Waves. By Willie Hustead. What is sound?. Sound is a sequence of waves of pressure that travel through media such as air or water that is able to compress easily. . Compression and rarefaction. Compression is the region of a wave in which the density and pressure are at a maximum.

toyah
Download Presentation

Sound Waves

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Sound Waves By Willie Hustead

  2. What is sound? • Sound is a sequence of waves of pressure that travel through media such as air or water that is able to compress easily.

  3. Compression and rarefaction • Compression is the region of a wave in which the density and pressure are at a maximum. • Rarefaction is the region of a wave in which the density and pressure are at a minimum.

  4. Pitch • Pitch is a measure of how high or low a sound is perceived to be, depending on the frequency of the sound wave. Frequency is defined as the number of cycles per unit of time.

  5. The Doppler Effect! • The Doppler Effect, named after Austrian psyicist Christian Doppler, is the change in frequency of a wave for an observer moving relative to a wave. Such as when a fire engine drives by, the siren is higher before and when it reaches a person, and lower when it passes by. • http://upload.wikimedia.org/wikipedia/commons/9/90/Dopplerfrequenz.gif

  6. Resonance • A phenomenon that occurs when the frequency of a force applied to a system matches the natural frequency of vibration of the system, resulting in a large amplitude of vibration. • On November 7, 1940, high winds caused the Tacoma Narrows suspension bridge to start resonating and eventually collapse.

More Related