SPAU 3304 Exam 1 UPDATED Exam
Questions and CORRECT Answers
define FORCE - CORRECT ANSWER - A push or a pull
define SPEED - CORRECT ANSWER - The distance an object travels per unit of time
define VELOCITY - CORRECT ANSWER - Speed in a given direction
define UNIFORM MOTION - CORRECT ANSWER - Motion at a constant speed in a
straight line
What is Newton's first law? (law of inertia) - CORRECT ANSWER - An object will
accelerate or decelerate only if acted upon by an outside force
What is Newton's second law? - CORRECT ANSWER - The acceleration of an object is
proportional to the net force acting on the object, and inversely proportional to the mass of the
object.
What is Newton's third law? - CORRECT ANSWER - For every action there is an equal
and opposite reaction
define DENSITY - CORRECT ANSWER - Describes how closely packed together
atoms/molecules are in a material
define ELASTICITY - CORRECT ANSWER - Ability to spring back after deformation
define STIFFNESS - CORRECT ANSWER - Degree of resistance to deformation
,define PRESSURE - CORRECT ANSWER - Force per unit area
What is the fomula for pressure? - CORRECT ANSWER - pressure = force/area
Define ACOUSTICS - CORRECT ANSWER - the study of the physics of sound
define PSYCHOACOUSTICS - CORRECT ANSWER - the study of the relationship
bewteen physical properties and our perception of those properties (how sound is perceived)
What 3 components are necessary for producing sound? - CORRECT ANSWER - 1. an
energy source
2. a body capable of vibration
3. a transmitting medium
define WAVE - CORRECT ANSWER - A disturbance composed of vibrations that move
through a medium, transporting energy from one location to another.
define COMPRESSION - CORRECT ANSWER - Regions of increased (greater) density
and air pressure
Define RAREFACTION - CORRECT ANSWER - Regions of decreased (lower) density
and air pressure
define INTENSITY - CORRECT ANSWER - Amount of energy required to make sound
define AMPLITUDE - CORRECT ANSWER - The extent of movement (how far does it
move?)
Intensity diminishes when moving ____ from the source. - CORRECT ANSWER - away
, define FREQUENCY - CORRECT ANSWER - The rate at which the particles vibrate
back and forth each second
What is the unit of measurement for frequency? - CORRECT ANSWER - Hertz (Hz) or
cycles/sec
define PERIOD (t) - CORRECT ANSWER - Time required to complete 1 cycle (seconds
per cycle)
define TRANSVERSE WAVE - CORRECT ANSWER - particle movement (the vibration)
is perpendicular to the wave's direction
define LONGITUDINAL WAVE - CORRECT ANSWER - the particles of the medium
move parallel to the direction of the wave
sound travels as a __________ wave - CORRECT ANSWER - longitudinal
define ENERGY - CORRECT ANSWER - the ability to do work (work= force exerted
over distance
define POWER - CORRECT ANSWER - the rate at which work is done
What is the unit for power? - CORRECT ANSWER - Watts (W) (expenditure of 1 joule of
energy in 1 second)
define SOUND/ACOUSTIC POWER - CORRECT ANSWER - the rate at which sound
energy is emitted, reflected, transmitted, or received, per unit time
Questions and CORRECT Answers
define FORCE - CORRECT ANSWER - A push or a pull
define SPEED - CORRECT ANSWER - The distance an object travels per unit of time
define VELOCITY - CORRECT ANSWER - Speed in a given direction
define UNIFORM MOTION - CORRECT ANSWER - Motion at a constant speed in a
straight line
What is Newton's first law? (law of inertia) - CORRECT ANSWER - An object will
accelerate or decelerate only if acted upon by an outside force
What is Newton's second law? - CORRECT ANSWER - The acceleration of an object is
proportional to the net force acting on the object, and inversely proportional to the mass of the
object.
What is Newton's third law? - CORRECT ANSWER - For every action there is an equal
and opposite reaction
define DENSITY - CORRECT ANSWER - Describes how closely packed together
atoms/molecules are in a material
define ELASTICITY - CORRECT ANSWER - Ability to spring back after deformation
define STIFFNESS - CORRECT ANSWER - Degree of resistance to deformation
,define PRESSURE - CORRECT ANSWER - Force per unit area
What is the fomula for pressure? - CORRECT ANSWER - pressure = force/area
Define ACOUSTICS - CORRECT ANSWER - the study of the physics of sound
define PSYCHOACOUSTICS - CORRECT ANSWER - the study of the relationship
bewteen physical properties and our perception of those properties (how sound is perceived)
What 3 components are necessary for producing sound? - CORRECT ANSWER - 1. an
energy source
2. a body capable of vibration
3. a transmitting medium
define WAVE - CORRECT ANSWER - A disturbance composed of vibrations that move
through a medium, transporting energy from one location to another.
define COMPRESSION - CORRECT ANSWER - Regions of increased (greater) density
and air pressure
Define RAREFACTION - CORRECT ANSWER - Regions of decreased (lower) density
and air pressure
define INTENSITY - CORRECT ANSWER - Amount of energy required to make sound
define AMPLITUDE - CORRECT ANSWER - The extent of movement (how far does it
move?)
Intensity diminishes when moving ____ from the source. - CORRECT ANSWER - away
, define FREQUENCY - CORRECT ANSWER - The rate at which the particles vibrate
back and forth each second
What is the unit of measurement for frequency? - CORRECT ANSWER - Hertz (Hz) or
cycles/sec
define PERIOD (t) - CORRECT ANSWER - Time required to complete 1 cycle (seconds
per cycle)
define TRANSVERSE WAVE - CORRECT ANSWER - particle movement (the vibration)
is perpendicular to the wave's direction
define LONGITUDINAL WAVE - CORRECT ANSWER - the particles of the medium
move parallel to the direction of the wave
sound travels as a __________ wave - CORRECT ANSWER - longitudinal
define ENERGY - CORRECT ANSWER - the ability to do work (work= force exerted
over distance
define POWER - CORRECT ANSWER - the rate at which work is done
What is the unit for power? - CORRECT ANSWER - Watts (W) (expenditure of 1 joule of
energy in 1 second)
define SOUND/ACOUSTIC POWER - CORRECT ANSWER - the rate at which sound
energy is emitted, reflected, transmitted, or received, per unit time
