Slide 2: Sound is produced when an object vibrates.
The vibrating of compressions and rarefactions make the sound travel.
The speed of sound depends on 4 things:
1. The it travels through.
2. The of the medium.
3. The of the medium.
4. The of the medium. medium temperature density elasticity
Slide 3: Sound must be transmitted through a medium
Sound can be transmitted through any kind of matter: _______, ________, or _____. (Air is most common)
Why is their no sound in space? solid liquid gas
Speed of Sound : Speed of Sound Sound travels faster through solids than liquids, and faster through liquids than ____________.
As temperature increases,
molecule movement __________,
which causes more energy, which
allows sound waves to be
transmitted ________. gases increases faster
Slide 5: You see lighting before you hear thunder (sound), because light waves travel about 1 million times faster than sound waves.
Measured in decibels (dB).
The greater the of the sound wave, the louder the sound.
is highness or lowness of a sound.
Frequency of sound wave determines the pitch. amplitude Pitch
Slide 6: ___________is the amount of energy that flows through a certain area in a specific amount of time.
Wind, earthquakes and heavy machinery produce sound waves that vibrate __________.
Sound waves of ____ intensity travel farther.
Sound waves cannot travel through a ___________. Intensity slowly high vacuum
Slide 7: The higher frequency of the sound the __________the pitch.
Loudness and pitch are not related; pitch is related to________ and _________, and _________.
Loudness is human perception to sound intensity. higher highness lowness frequency
Slide 8: The Doppler Effect is the change in ________ that your hear as sounds ________ you. pitch pass