Plz help on the 3 questions!
Sound waves produced by a vibrating object are _____.
Loudness is the human perception of sound wave _____.
The process of detecting objects by bouncing sounds off them is called _____.

Question

Plz help on the 3 questions! 
Sound waves produced by a vibrating object are _____.  
 Loudness is the human perception of sound wave _____.  
The process of detecting objects by bouncing sounds off them is called _____.

anonymous · Answer

(a)compressional waves

(b) of sound wave intensity.

(c) Echolocation.

anonymous · Answer

compressional waves cant be called as 'longitudinal waves'

anonymous · Answer

Thanks Guys