2 The distance between two consecutive compressions is called: A Amplitude B Frequency C Wavelength D Pitch
6 Which part of ear converts sound vibrations into electrical signals? A Pinna B Cochlea C Eardrum D Auditory canal
9 Speed of sound in air at room temperature is approximately: A 150 m/s B 330 m/s C 1000 m/s D 3000 m/s
12 Infrasound has frequency: A Above 20 kHz B Equal to 20 kHz C Below 20 Hz D Between 20 Hz and 20 kHz
13 Which factor does NOT affect the speed of sound in air? A Temperature B Humidity C Pressure D Density
19 The region of high pressure in a sound wave is called: A Rarefaction B Compression C Amplitude D Frequency