_________ is a mechanical wave that must travel through a medium (matter).
What is SOUND?
100
Sound is a LONGITUDINAL wave produced by a ________ object and travels through matter.
What is VIBRATING?
100
A rapid, back-and-forth motion is called a ________.
What is VIBRATION?
100
In a sound wave, areas of high pressure are called ________ and areas of low pressure are called ________.
What is COMPRESSION...RAREFACTION?
100
The speed of sound depends on its MEDIUM and __________.
What is TEMPERATURE?
200
Given a Solid, Liquid, and Gas…list them in order from fastest to slowest the speed in which sound will travel through them. ______, _______, _______.
What is SOLID, LIQUID, GAS?
200
When it comes to the medium, sound will travel fastest through the more ______ material.
What is DENSE (denser)?
200
When it comes to temperature, sound travels fastest through a medium that is at ______ temps…the particles are already moving faster.
What is HIGHER?
200
Pitch depends on ________ of a sound wave.
What is FREQUENCY?
200
The quality of highness or lowness of a sound is called ______.
What is PITCH?
300
One complete wavelength (“Cycle”) per second is called a _______
What is HERTZ?
300
The change in perceived pitch that occurs when the source or the receiver of a sound is moving. Ex. Police siren approaching and then passing…Pitch gets higher and higher as it approaches then a sudden drop in pitch immediately as it passes is called _______ _______.
What is DOPPLER EFFECT?
300
The amount of energy a sound wave has is called its ________ and is determined by its _______ (HINT: part of a wave).
What is INTENSITY....AMPLITUDE?
300
The greater the intensity of a sound wave the ______ the sound will be.
What is LOUDER?
300
One reason sound dies out over a distance is sound waves travel in all directions and will lose intensity as the waves spread out over a larger area. What else did we discuss that causes sound waves to die out (HINT: without it…sound could travel on forever!). ________
What is FRICTION?
400
Unit used to measure sound intensity (loudness).
What is DECIBEL (db)?
400
What can you do to a guitar string (or rubber band) to give you a higher pitch sound? _________
What is STRETCH IT/TIGHTEN IT?
400
A group of populations that live in a particular area and interact with one another...
What is COMMUNITY?
400
(“Living together”)...is the relationship between individuals of two different species who live together in a close relationship.
What is SYMBIOSIS?
400
The study of sound...
What is ACOUSTICS?
500
Sending out ultrasound waves and interpreting the returning sound echoes...
What is ECHOLOCATION?
500
Instruments that use echolocation to locate objects…
What is SONAR?
500
String phones demonstrate that sound requires a medium to travel from one place to another and that sound is a _______
What is VIBRATION?
500
When in object breaks the sound barrier it creates is pressure (or shock) wave called a ______ ______
What is SONIC BOOM?
500
When two objects have the same natural frequency...vibrating one of the objects will cause the other to vibrate. This is called ________