Reflections of sound Flashcards
Sound
What is the phenomenon called when sound waves bounce off a surface?
Reflection of sound
True or False: Sound can only travel through air.
False
Fill in the blank: The angle of incidence is equal to the angle of __________.
reflection
What happens to sound waves when they hit a hard surface?
They are reflected.
Multiple Choice: Which of the following is a good reflector of sound? A) Soft fabric B) Concrete wall C) Water D) Air
B) Concrete wall
What term describes the distance between a sound wave’s peaks?
Wavelength
True or False: Echoes are a result of sound reflection.
True
What is an echo?
A reflection of sound that arrives at the listener after a delay.
Fill in the blank: Sound travels faster in __________ than in air.
water
Multiple Choice: Which surface would absorb sound the most? A) Metal B) Wood C) Carpet D) Glass
C) Carpet
What is the primary factor that affects how sound reflects off a surface?
The surface’s material and texture.
True or False: The loudness of a reflected sound is always the same as the original sound.
False
What is the role of frequency in sound reflection?
Higher frequency sounds may reflect differently than lower frequency sounds.
Fill in the blank: A flat surface produces a __________ echo.
clear
Multiple Choice: Which of the following is NOT a factor in sound reflection? A) Surface texture B) Temperature C) Color of the surface D) Angle of incidence
C) Color of the surface
What type of wave is sound?
Longitudinal wave
True or False: Sound can be reflected in a curved surface.
True
What is a common application of sound reflection in technology?
Sonar
Fill in the blank: The __________ of sound waves can create effects like reverberation.
reflection
Multiple Choice: In which environment does sound reflect more clearly? A) Open field B) Inside a concert hall C) Underwater D) In a forest
B) Inside a concert hall
What is the effect of multiple reflections of sound in a small space?
Reverberation
True or False: Soft surfaces are better at reflecting sound than hard surfaces.
False
What is the term for the decrease in sound intensity as it reflects off surfaces?
Sound attenuation
Fill in the blank: Sound waves can be __________, meaning they can bounce back after hitting a surface.
reflected
Multiple Choice: Which of the following does NOT affect sound reflection? A) Distance B) Surface angle C) Surface material D) Volume of the sound
D) Volume of the sound
