Sound - Sound Waves

Question 1

sound waves

Answer 1

• medium is air, can transmit through different types of materials
• a wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air
• a mechanical wave that results from the back and forth vibration of the particles of the medium through which the sound wave is moving
• Because of the longitudinal motion of the air particles, there are regions in the air where the air particles are compressed together and other regions where the air particles are spread apart. These regions are known as compressions and rarefactions respectively. The compressions are regions of high air pressure while the rarefactions are regions of low air pressure. The diagram below depicts a sound wave created by a tuning fork and propagated through the air in an open tube. The compressions and rarefactions are labeled.