EDELMAN PHYSICS FOR SPI (CHPT 2) EXAM QUESTIONS AND ANSWERS 100% CORRECT!!

True or False All waves carry energy from one location to another. - ANSWER True What type of wave is a sound wave? - ANSWER Sound is a mechanical wave in which the particles in the medium move. The molecules in the medium, vibrate back and forth from a fixed position. True or False Sound cannot travel through a vacuum. - ANSWER True Sound needs a medium where molecules are alternately compressed and rarefied. What do the terms compression and rarefaction mean? - ANSWER Compression: Squeezed together Rarefaction: Stretched apart. True or False: Sound travels in a varying line. - ANSWER False. Sound travels in a straight line. True or False Sound waves are longitudinal waves. - ANSWER True. What is acoustic propagation properties? - ANSWER The effects of the medium upon the sound wave. Define distance and give the units. - ANSWER Distance: Measure of particle motion. Units: cm, feet, mile. True or False. Sound waves are also known as acoustic waves. - ANSWER True. Name the seven acoustic parameters. - ANSWER Period Frequency amplitude Power Intensity Wavelength Propagation speed Define transverse waves. - ANSWER In a transverse wave, particles move in a direction that is perpendicular (at right angles) to the direction that the wave propagates.