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Ultrasound: Quiz


Question 1: Ultrasound is used when characterizing particulates through the technique of ultrasound attenuation spectroscopy or by observing ________.
ElectrophoresisZeta potentialSurface conductivityElectroacoustic phenomena

Question 2: A common use of ultrasound is in range finding; this use is also called ________, (sound navigation and ranging).
Marine mammals and sonarUnderwater acousticsSonarEcho sounding

Question 3: Ultrasonic testing is a type of ________ commonly used to find flaws in materials and to measure the thickness of objects.
Mechanical engineeringMaterials scienceCivil engineeringNondestructive testing

Question 4: Ultrasound is cyclic sound pressure with a ________ greater than the upper limit of human hearing.
WaveOpticsElectromagnetic radiationFrequency

Question 5: The upper frequency limit in humans (approximately 20 kHz) is due to limitations of the middle ear, which acts as a ________.
RC circuitElectronic filterLow-pass filterButterworth filter

Question 6: An ultrasonic cleaner works mostly by energy released from the collapse of millions of microscopic ________ near the dirty surface.
Water tunnel (hydrodynamic)CavitationFluid dynamicsSonoluminescence

Question 7: Ultrasonic hearing can occur if ultrasound is fed directly into the skull bone and reaches the ________ without passing through the middle ear.
Auditory systemInner earCochlear nerveCochlea

Question 8: the ability to stimulate bone-growth and its potential to disrupt the ________ for drug delivery.
Immune systemMeningitisBlood-brain barrierAIDS

Question 9: Power ultrasound in the 20–100 kHz range is used in ________.
ElectrochemistryPeriodic tableInorganic chemistryChemistry

Question 10: Check for the number of fetuses (________)
Multiple birthIn vitro fertilisationMonoamniotic twinsTwin

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