12298349
Descripción
Test por JanaLee Moses, actualizado hace más de 1 año
|
Creado por JanaLee Moses
hace casi 7 años
|
|
Pregunta 1
Pregunta
A region of high molecular density and high air pressure is called a _____________________.
Respuesta
-
compression
-
rarefaction
-
vibration
-
wave
Pregunta 2
Pregunta
Sound waves are ________________.
Respuesta
-
longitudinal
-
transverse
-
sine waves
-
electromagnetic waves
Pregunta 3
Pregunta
Frequency is defined as what?
Respuesta
-
The number of cycles per unit of time
-
The amount of time per cycle.
-
The same as velocity.
-
The distance between cycles of a wave.
Pregunta 4
Pregunta
With sound, frequency determines _______________.
Respuesta
-
pitch
-
color
-
loudness
-
intensity
Pregunta 5
Pregunta
Sound waves can travel through which of the following? (Select ALL that apply)
Respuesta
-
Solids
-
Liquids
-
Gases
-
Empty space
Pregunta 6
Pregunta
The speed of down depends on both the ___________ and ____________ of the medium.
Respuesta
-
type, temperature
-
type, harmonics
-
temperature, harmonics
-
harmonics, velocity
Pregunta 7
Pregunta
Sound waves can be approximated as __________.
Respuesta
-
spherical
-
conical
-
sine waves
-
cubic
Pregunta 8
Pregunta
As the source of a sound approaches you, the pitch of the sound seems to ___________.
Respuesta
-
be higher
-
be lower
-
remain the same
Pregunta 9
Pregunta
Because of the Doppler Effect, when a sound source is moving away from you, the frequency seems to ____________ although it actually ____________.
Respuesta
-
lessen, remains the same
-
become greater, remains the same
-
remain the same, lessens
-
remain the same, becomes greater
Pregunta 10
Pregunta
As a soundboard vibrates back and forth, its _________ is converted into sound waves.
Respuesta
-
kinetic energy
-
potential energy
-
harmonics
-
intensity
Pregunta 11
Pregunta
Intensity is the rate of _________ through a given area.
Respuesta
-
energy flow
-
harmonics
-
speed
-
frequency
Pregunta 12
Pregunta
__________ and __________ determine which sounds are audible.
Respuesta
-
Intensity, frequency
-
Intensity, decibels
-
Frequency, velocity
-
Velocity, decibles
Pregunta 13
Pregunta
The unit for the decibel is __________.
Respuesta
-
(none)
-
dB
-
db
-
W/m^2
Pregunta 14
Pregunta
Sympathetic vibrations occur when _______.
Respuesta
-
vibrations are transferred from one object to another
-
an object vibrates at its natural frequency
-
a vibration is amplified
Pregunta 15
Pregunta
Vibration at the natural frequency produces _____________.
Respuesta
-
resonance
-
intensity
-
the Doppler Effect
-
compressions
Pregunta 16
Pregunta
In 1940, a bridge collapsed due to an issue with ___________.
Respuesta
-
resonanace
-
intensity
-
the Doppler Effect
-
impulses
¿Quieres crear tus propios Tests gratis con GoConqr? Más información.