# Shared Flashcard Set

## Details

Edelman Physics Review
Chapter 2 - Sound Waves
26
Physics
05/29/2011

Term
 How many seconds per hour and the number of miles in a centimeter
Definition
 The speed of red blood cells traveling through a blood vessel is 750 cm/sec. You are asked to measure this speed in miles per hour. What information would be sufficient for you to complete your task?
Term
 Biological effects
Definition
 What terms is used to describe the effects of an ultrasound wave on living tissue?
Term
 Bioeffects
Definition
 As sound travels through a medium, what term describes the effects of the medium on the sound wave?
Term
 Cyclical oscillations in certain variables
Definition
 Sound waves can be characterized as:
Term
 All carry energy from one site to another
Definition
 Which of the following is true of all waves?
Term
 Alternately from East to West and then from East to West.
Definition
 A longitudinal wave is propagating from the East towards the West at a speed of 2 miles per hour. What is the direction of motion of the particles within the wave?
Term
 Transverse
Definition
 The direction of motion of a particle in a wave is perpendicular to the direction of propagation of the wave. What time of wave is this?
Term
 Horizontal
Definition
 A particle within a transverse wave is traveling vertically. What is the direction of the wave's propagation?
Term
 Light, heat, television
Definition
 Which of the following types of waves do not require a medium in order to propagate?
Term
 Mechanical, longitudinal
Definition
 Which of the following describes the characteristics of a sound wave?
Term
 A series of compressions and rarefactions
Definition
 Sound is best described as?
Term
 They are transverse
Definition
 All of the following are true about sound waves except?choices: a series of compressions and rarefactions, a transverse wave, a wave that humans can hear, an oblique displacement of acoustic energy.
Term
 They are transverse
Definition
 All the following are true about sound waves except?Choices: the are mechanical, they are transverse, they carry energy from place to place, they generally travel in a straight line.
Term
 Are acoustic variables
Definition
 Pressure, Density and Motion of particles in the wave are?
Term
 Are not acoustic variables
Definition
 Frequency, Propagation speed, Wavelength, Voltage, and Intensity are?
Term
 Atmospheres (atm), pascals (Pa), millimeters of mercury (mm Hg), pounds/sq. inch (lb/in^2)
Definition
 What are the units of a pressure measurement of an acoustic wave?
Term
 Unchanged
Definition
 A force is applied to a surface. If the force is tripled and the surface are over which the force is applied is also tripled, what is the new pressure?
Term
 Unchanged
Definition
 A force is applied to a surface. If the force is tripled and the surface are over which the force is applied is also tripled, what is the new pressure?
Term
 Minutes, microseconds
Definition
 Which of the following units are appropriate to describe the period of an acoustic wave?
Term
 Interference
Definition
 Waves that exist at the same location and time will combine together. What is this called?
Term
 Destructive interference
Definition
 Two waves arrive at the same location and interfere. The resultant sound wave is smaller than either of the two original waves What is this called?
Term
 Constructive interference
Definition
 A pair of waves are in phase. What occurs when these waves interfere?
Term
 Frequency
Definition
 _____________ is the reciprocal of period.
Term
 Pa, lb/in^2
Definition
 Pressure units are?
Term
 lb/in^3, kg/m^3
Definition
 Density units are?
Term
 miles, cm
Definition
 Particle motion units are?
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