Vocabulary
Sound Wave Basics
Basics/Graphs/Models
100
Amplitude
The distance between the midpoint and a peak or a valley.
Controls how loud a sound is
100
What is the back-and-forth movement of an object past its starting position called?
Vibration
100
What will damage a eardrum more: A loud sound or a high frequency?
Louder Sounds
Loud sounds vibrate or move back and forth for a larger distance than soft sounds.
The loud sound vibrations cause harder collisions between air particles.
Loud sounds transfer more energy between air particles than soft sound
When the high-pitched air particles transfer energy to the eardrum they are colliding with the eardrum more frequently but with less force.
200
Frequency
The number of peaks or valleys that you would see in a single second
Controls the Pitch of a sound
200
Which type of sound has a Lower Frequency?
Softer Sounds
Low Pitch
Low amount of waves/Less Frequent
200
Model Drawing
You will have a question requiring you to draw and add words to complete a model. Make sure you look over the model checklist activity in your notebooks.
300
Medium
Substance made of matter (Containing Particles) that sound can travel through
300
What is the relationship between the push on a sound maker and its amplitude?
Direct or Inverse?
Direct
Bigger push=Louder Sound
300
Which color(s) are the highest amplitude?
Which color(s) are the lowest amplitude?
Highest: Green and Navy
Lowest: Purple
400
Sound Wave
A vibrations that travels through a medium, compressing particles more densely packed together
400
What happens to our ear drum or any receiver when sound waves reach them?
They Vibrate
400
What happens to particles in a medium as sound travels through?
They vibrate and bump into other particles in the medium
500
Wavelength
The distance between successive crests of a wave; Valley to valley, Peak to Peak, Midline to midline
500
What type of medium does sound travel best through? Why?
Solids
Particles are closer together
500
Which graph shows the highest frequency?
Graph D