and answers 2025\2026 A+ Grade
Propagation
- correct answer movement through a medium
Wave
- correct answer Can be defined as a disturbance that moves through a medium
Wave motion
- correct answer Can be defined as a recurring disturbance advancing through space with or without the
use of a physical medium
Transverse
- correct answer 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?
Longitudinal
- correct answer Type of waves which the disturbance takes place in the direction of propagation
Medium
- correct answer The vehicle through which the wave travels from one point to the next
Reference line
- correct answer The position in which a particle of matter would have been called if it were not
disturbed by wave motion
Wavelength
- correct answer The distance in space occupied by one cycle of a radio wave at any given instant
,Meters
- correct answer Unit of measurement that wavelengths are expressed in
Amplitude
- correct answer A wave property that gives a relative indication of the amount of energy the wave
transmits
Wave train
- correct answer A continuous series of waves that are called having the same amplitude and
wavelength
Hertz
- correct answer 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?
Hertz
- correct answer Which term refers to the number of occurrences that take place in one second?
Velocity
- correct answer 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?
Period
- correct answer What is the time in which one complete vibratory cycle of events occurs?
Incident
- correct answer What is a wave called that is directed toward the surface of the mirror?
Angle of reflection
- correct answer What is the angle between the reflected wave and the normal called?
Law of reflection
- correct answer Which law states that "The angle of incidence is equal to the angle of reflection?
,Diffraction
- correct answer What is the bending of the wave path when the waves meet an obstruction?
Doppler Effect
- correct answer What is the apparent change in frequency or pitch when a sound source moves either
toward or away from the listener, or when the listener moves either toward or away from the sound
source
Wave motion
- correct answer How does sound travel through a medium?
Sound
- correct answer In the study of physics, what is defined as a range of compression-wave frequencies to
which the human ear is sensitive?
Sonics
- correct answer Which type of sounds are capable of being heard by the human ear?
15 Hertz
- correct answer The Navy has set an arbitrary upper limit for sonics at 10,000 hertz and a lower limit at
what?
Ultrasound
- correct answer What is the standard practice used to refer to sounds above 10,000 hertz?
Infrasonic
- correct answer What are sounds below 15 hertz known as?
Three
- correct answer How many basic elements for transmission and reception of sound must be present
before a sound can be produced?
Noise or Tones
- correct answer Which two general groups may sounds be broadly classified into?
, Quality
- correct answer Sound has three basic characteristics: pitch, intensity, and what else?
Pitch
- correct answer Which term is used to describe the frequency of a sound?
Intensity
- correct answer What is a measure of the sound energy of a wave?
Loudness
- correct answer What is the sensation the intensity (and sometimes frequency) the sound wave
produces on the ear?
Elasticity and Density
- correct answer What are the two basic physical properties that govern the velocity of sound through
the medium?
Elasticity
- correct answer What is the ability of a strained body to recover its shape after deformation?
Density
- correct answer What property of a medium or substance is the mass per unit volume of the medium or
substance?
1,087
- correct answer What is the velocity in FPS that sound will travel through air at 32 degrees?
Acoustics
- correct answer What is the science of sound referred to as?
Echo
- correct answer What is the reflection of the original sound wave as it bounces off a distant surface
called?