Vocabulary
A rapid back-and-forth motion of the particles of an object.
What is vibration?
Taller waves in an oscilloscope reading mean this.
The sound is louder
Small objects that make up matter and vibrate to make sound.
Particles
What we call an object that produces sound.
What is a Sound source
Sound needs this to travel.
What is a medium?
A push or pull that can change an object's motion.
What is a force?
Shorter waves on an oscilloscope reading mean this.
Quieter sound
A word to describe how close together or far apart particles are.
Density
An object that vibrates because sound waves hit it.
What is a sound receiver?
This is the most dense type of matter.
What are solids?
The number sound wave "bumps" you see.
What is frequency or pitch?
Many waves close together show this.
High Pitch (frequency)
A high amplitude sound has (more/less) energy than a low amplitude sound.
More
An example of a sound source from this unit. (multiple correct answers)
Sound travels slowest through this type of matter.
What is gas?
The measurement of a sound waves height.
Few waves far apart show this.
Low Pitch (frequency)
(Matter/Energy) travels from the sound source to the sound receiver.
Energy
An example of a sound receiver from this unit.
What is a window, human ears, door...
This is why sound travels faster through solids than gasses.
This is needed in order to carry sound waves from one place to another.
What is a medium (matter)?
Example of a high frequency but low amplitude sound (many correct answers)
High pitched but quiet
This is why sound can't travel through outer space.
There is no medium (matter) in outer space for sound to travel through.
This happens in order for an object to make sound.
This is how sound travels through a medium.
What is particles vibrate and pass energy from one to the next?