ACTUAL FINAL EXAM STUDY

ACTUAL FINAL EXAM STUDY

GUIDE LATEST VERSION -[WITH 9

CHAPTERS] WITH 200+ QUESTIONS AND

VERIFIED CORRECT ANSWERS [ALREADY

GRADED A+] //PHYSICS ACTUAL

Exam 1: Ch 1 and 2

Chapter 1: The Basics

• Is the x-axis horizontal or vertical? The y-axis?
• X = horizonal; Y = vertical
• When one variable increases and the other decreases is it a direct or inverse relationship?
• Inverse
• Two variables that increase demonstrate what type of relationship?
• Directly related or directly proportional
• Define a reciprocal relationship.
• When two numbers equal 1 when multiplied together
• What is the reciprocal of 20?
• 1/20
• A number in scientific notation form with an exponent of zero has a value of?
• Between 1 and 10
• What is the complimentary metric unit for the following?
• Giga
• nano
• Deca
• Deci
• Milli
• Kilo
• Mega
• micro
• Centi
• Hecto

Ch. 2: Sound 1 / 3

• In diagnostic ultrasound, sound pulses created by a transducer travel through .
• Media, biologic tissue
• What do waves transfer from one location to another?
• Energy
• Sound must travel through a medium where molecules are alternatively and
• Compressed – squeezed together
• Rarefied – stretched apart
• Are sound waves transverse or longitudinal?
• Longitudinal
• Define acoustic propagation properties
• The effects of the medium upon the sound wave
• What are the acoustic variables and what are their units ?
• Pressure (pascals), density (kg/cm

3 ), distance (cm, ft, miles)

• Sound waves are also known as
• Acoustic waves
• What are the acoustic parameters?
• Period, frequency, amplitude, power, intensity, wavelength, propagation speed 2 / 3

• What are used to distinguish between sound waves and other types of waves? Acoustic

Variables or acoustic parameters?

• Acoustic variables
• What are used to describe the characteristics of a sound wave?
• Acoustic Parameters
• When particles move in a direction perpendicular to direction that the wave propagates, what

type of wave is it?

• Transverse
• When particles move in the same direction that the wave propagates, it is a wave.
• Longitudinal
• Holding a close line and shaking it up and down creates which type of wave?
• Transverse
• Pushing a slinky forward is an example of a wave.
• Longitudinal
• Describe the difference between in-phase and out-of-phase waves.
• A wave is In-phase when their maximum values (peaks) and minimum values occur at

the same time and at the same location. Out-of-phases have peaks that occur at different times and so do their troughs

• Describe interference
• When more than one sound beam travel in a medium and arrive at the same time, they

lose their individual characteristics and combine to form a single wave

• Both in-phase and out-of-phase wave pairs undergo interference. True or False
• True
• What is the term for when a resulting wave is larger amplitude than either of its components?
• Constructive interference
• The interference of a pair of causes constructive interference
• In-phase waves
• When the resultant wave in smaller than one if its components
• Destructive interference
• The interference of a pair of waves results in the formation of a single wave of lesser

amplitude than at least one of its components

• Out of phase waves
• What happens when two out-of-phase waves are of equal amplitude?
• Complete destructive interference
• What happens when the frequencies of the waves differ?
• Both constructive and destructive interference
• What units are used to report the pressure of a sound beam?
• Pascals
• Acoustic variables allow us to determine which waves are sound and which are not. T or F
• True
• Acoustic parameters are used to describe the features of sound waves?
• True
• What is the unit for density ?
• Kg/cm

3

• concentration of mass in a volume
• What is the definition of pressure ?
• Concentration of force in an area
• Definition of distance
• Measure of particle motion
• / 3