SONOGRAPHY CANADA PHYSICS CORE (GRADED A+)

what is media/medium -ANSWER biological tissue what do all waves carry from one location to another -ANSWER energy sound is a ____________ wave in which particles in the medium move -ANSWER mechanical where can sound not travel -ANSWER in a vacuum are sound waves transverse or longitudinal waves -ANSWER longitudinal the effects of the medium upon the sound wave -ANSWER acoustic propagation properties what are used to distinguish between sound waves and other types of waves -ANSWER acoustic variables- pressure, density, and distance (measure of a particle motion) what are the 3 acoustic variables -ANSWER pressure, density and distance concentration of force in an area -ANSWER pressure what is pressure measured in -ANSWER pascals (Pa) concentration of mass in a volume -ANSWER density what is volume measured in -ANSWER kg/cm^3 (cubic) what describes a sound waves features -ANSWER acoustic parameters what are the 7 acoustic parameters -ANSWER period, frequency, amplitude, power, intensity, wavelength, propagation speed how do particles move in soundwaves -ANSWER longitudinally- particles move in the same direction that the wave propagates (parallel) in-phase wave -ANSWER when their peaks and troughs occur at the same time out of phase wave -ANSWER peaks and troughs occur at difference times -either inverted or out of step what occurs when waves lose their individual characteristics and combine to form a single wave -ANSWER interference what combination of waves results in the formation of a single wave of greater amplitude of either components -ANSWER constructive interference what kind of wave causes the formation of a single wave of lesser amplitude causing what types of interference -ANSWER out of phase destructive interference what occures when 2 out of phase waves of equal amplitude interfere -ANSWER complete destructive interference what types of waves (phase) occur with complete destructive interference -ANSWER out of phase waves what causes waves to be momentarily in phase and out of phase (causing constructive and destructive interference) -ANSWER waves of difference frequencies what type of waves of difference frequencies result in (type of interference) -ANSWER constructive and destructive what direction of the graph is verticle vs horozontal -ANSWER y=vertical x=ho