Sonography Canada Physics Core Correct 100%.

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 con