W.1 Model of Sound
What causes sound?
Vibrations of particles
What is the distance between two crests or troughs called?
Wavelength
What type of wave is light?
Transverse
What happens when two waves meet?
They interfere
What determines the pitch of a sound?
Frequency
What kind of wave is sound?
Longitudinal
What is amplitude related to?
Volume or loudness
Which wave DOES NOT need a medium—sound or light?
Light
What is it called when waves combine to make a bigger wave?
Constructive interference
Why can’t sound travel in space?
There’s no medium (no air)
What is required for sound to travel?
A medium
What happens to wavelength as frequency increases?
Wavelength decreases
What part of the EM spectrum can humans see?
Visible Spectrum
What is destructive interference?
When waves cancel each other out
Describe how sound travels through air.
Vibrating particles bump into each other, transferring energy through compression
What direction do particles move in a longitudinal wave?
Parallel to the direction of the wave
pitch is most associated with ___________
frequency
What type of wave is sound? What type is light?
Sound = Longitudinal, Light = Transverse
Which type of interference makes sound quieter?
Destructive interference
List 2 differences between sound and light waves
Sound needs a medium and is longitudinal; light doesn’t need a medium and is transverse
What transfers energy in a sound wave?
Collisions between particles
What kind of pitch has a high frequency? (high or low)
A high-pitched sound
What is the full range of light waves called?
Electromagnetic Spectrum
Where do you hear the loudest sounds in a sound system?
Where waves constructively interfere
Draw a high-frequency, high-amplitude wave. Label it with crest, trough, wavelength, amplitude.