Sound waves Flashcards
How does sound travel?
As a wave
What are sound waves caused by?
Vibrating objects
Where are the mechanical vibrations passed through?
The surrounding medium as a series of compressions
What are a type of longitudinal waves?
Compressions
What can sound waves do?
Reflect
Refract
What are sound waves reflected by?
Hard flat surfaces
What are echoes?
Reflected sound waves
Why is there a delay between a original sound and an echo?
Echoed sound waves have further to travel
What does refract mean?
Change direction
Where will sound waves refract?
As they enter different media
What happens to sound waves when they enter denser material?
Speed up
What do high frequency sound waves have?
Higher pitch
What do low frequency sound waves have?
Low pitch
What is frequency?
The number of complete vibrations each second
What does high frequency mean/
Short wavelength
