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6th grade Natural Science U.4 Sound
Contributed by: Cambon
 It is a form of energy produced by luminous objects
 It is a type of mechanical energy
 It is a type of ultraviolet radiation
 It is a wave that bounces off of a vertical object
What is sound?
Sound travels in....
 Waves
 the form of radiation
 frequency
 ultrasounds
There are two types of waves:
 Infrasound and ultrasound
 Echoes and sonar
 Transverse and longitudinal
Sound waves are...
 Transverse
 Longitudinal
 up and down
Transverse waves move...
 side to side
 up and down
Longitudinal waves move...
 side to side
 solid, liquid or gas
 solid or liquid
 solid, liquid, gas or empty space
 liquid or gas
Sound waves  can travel through...
Sound cannot travel in empty space.
 True
 False
Sound travels at a speed of ...
 300,000 km/s
 340 m/s
340 Km/s
1,000 m/s
 An object that travels slower that the speed of sound
 An object that travels faster than the speed of light
 An object that travels faster than the speed of sound
What is a supersonic object?
When an object passes the sound barrierit produces a loud noise called....
 Sonar
 Echo
 Sonic boom
 Ultrasound
This property of sound refers to the volume of a sound:
 Timbre
 Pitch
 Intensity
This property refers to the musical tone of the sound:
 Intensity
 Timbre
 Pitch
This property depends on the amplitude of the sound wave:
 Pitch
 Intensity
 Timbre
This property depends on the frequency of the wave:
 Intensity
 Timbre
 Pitch
This property refers to the small variations that make
every sound unique
 Intensity
 Pitch
 Timbre
It is measured in decibels:
 Intensity
 Pitch
 Timbre
It is measured in Hertz:
 Intensity
 Pitch
 Timbre
 Electric impulse
 Sonic boom
 Echo
 Vibration
When a sound wave reflects off of an object,
it is called...
An echo can occur in very small rooms.
 True
 False
Ear
?
Ear canal
?
Outer ear
?
Label the drawing:
Eardrum
?
Small bones
?
 Middle
   ear
?
Inner ear
?
 Cochlea
?
 Auditory nerve
?
Which organ converts the vibrations into
electric impulses?
 Cochlea
 Small bones
 Eardrum
 Ear canal
This machine uses sound waves to  see how a baby
develops inside  the mother´s uterus.
 Sonar
 Infrasound
 Echo
 Ultrasound
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