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Sound waves are a type of ______
longitudinal waves
Particles in Compressions are __________
close together
Particles in Rarefactions are ___________
further apart
_____________ are More dense region, while _______ are less dense regions
Compressions, Rarefactions
sound travels faster in _____than in ____and faster in liquids than in ____.
solids -liquids -gases
Sound waves with a frequency greater than _________ are called as ultrasound
20 000 Hz
___________uses ultrasound to detect objects underwater
Sonar
Speed of sound =
distance/time in one direction
The _________of a sound wave is related to the loudness of the sound:
amplitude
High amplitude sound waves are _________
loud
Low amplitude sound waves are _______
quiet
High _______sound waves are high pitched
frequency
___________ sound waves are low pitched
Low frequency
Humans can hear sounds between about_____ frequency
20 Hz and 20 000 Hz
The speed of sound in air is approximately
330–350 m/s
The speed of sound ___________ as the temperature increases
increases
