Revision: Sound 13 Sound - Revision Quiz Test your understanding of Sound here: 1 / 5 1) Four sound waves are imaged on a c.r.o. using the same gain and timebase values. Which sound wave has the highest frequency? 2 / 5 2) Two sound waves are displayed on the cathode ray oscilloscope with the same settings. Which statement about the two sounds is correct? Sound 1 is softer and at a higher pitch than sound 2. Sound 1 is softer and at a lower pitch than sound 2. Sound 1 has a shorter wavelength than sound 2. Sound 1 travels faster than sound 2. 3 / 5 3) Which is not an application of ultrasound? killing cancer cells cleaning delicate mechanical objects finding the depth of water imaging internal organs 4 / 5 4) A pure note is displayed on the screen of a C.R.O. as shown in the diagram below. If the time base setting of the C.R.O. is set to 2.0 ms cm-1, what is the frequency of the note? 5.0 Hz 200 Hz 5.0 kHz 20 Hz 5 / 5 5) 2018 S4 EOY P1 Q14 The echo sounder of a ship emits a pulse of sound which is reflected back to the ship by a shoal of fish directly below the transmitter. The time between the transmission and reception of the pulse is 20 ms. At what depth are the fish from the ship if the speed of sound in sea water is 1400 m/s? 28 m 140 m 280 m 14 m Your score is Restart quiz