Chapter Overview
Sound is a form of energy that travels as a wave through a medium. This chapter explains the characteristics of sound waves, their propagation, and factors affecting their speed. Concepts such as reflection, reverberation, echoes, and ultrasound applications are also covered.
Important Keywords
- Sound Wave: A longitudinal wave produced due to vibrations.
- Frequency: The number of vibrations per second (measured in Hertz).
- Amplitude: The maximum displacement of particles in a medium.
- Wavelength: The distance between two consecutive crests or compressions.
- Velocity of Sound: Speed at which sound travels through a medium.
- Echo: Reflection of sound heard after 0.1 seconds.
- Reverberation: Persistence of sound due to multiple reflections.
- Ultrasound: Sound waves with frequencies above 20,000 Hz.
- Sonar: Technology using ultrasound to detect underwater objects.