NAVEDTRA 14182A Exam Questions with Complete Solutions

NAVEDTRA 14182A Exam Questions with Complete Solutions Which term means " movement through a medium"? - answerPropagation What can be defined as a disturbance ( sound, light, radio waves) that moves through a medium (air, water, vacuum)? - answerWave What can be defined as a recurring disturbance advancing through space with or without the use of a physical medium? - answerWave motion Which type of waves are water waves known as because the motion of the water is up and down, or at right angles to the direction in which the waves are traveling? - answerTransverse Which types of waves are waves in which the disturbance takes place in the direction of propagation? - answerLongitudinal What is the vehicle through which the wave travels from one point to the next? - answerMedium What is the position called that a particle of matter would have if it were not disturbed by wave motion? - answerreference line What is the distance in space occupied by one cycle of a radio wave at any given instant? - answerwavelength which unit of measurement are wavelengths expressed in? - answermeters Which wave property gives a relative indication of the amount of energy the wave transmits? - answeramplitude What is a continuous series of waves called having the same amplitude and wavelength? - answerwave train The number of vibrations, or cycles, of a wave train in a unit of time is called the frequency of the wave train and is measured in what? - answerHertz Which propagation property is the rate at which the disturbance travels through the medium, or the velocity with which the crest of the wave moves along? - answervelocity what is the time in which one complete vibratory cycle of events occurs? - answerperiod what is a wave called that is directed toward the surface of the mirror? - answerincident What is the angle between the reflected wave and the normal called? - answerAngle of reflection In empty rooms or other confined spaces, sound may be reflected several times to cause what is known as? - answerreverberation What is any disturbance, man0made or natural, that causes an undesirable response or the degradation of a wave referred to as? - answerinterference What is the most complex sound wave that can be produced? - answernoise What is light a form of? - answerelectromagnetic radiation Current light theory says that light is made up of very small packets of electromagnetic energy called what? - answerPhotons Approximately how many miles per second does light travel? - answer186,000 What is a large volume of light called? - answerBeam What is a narrow volume of light called? - answerpenci