Extra stof 5.3

If the loudness is 20 dB and the frequency is 50 Hz can you hear the sound?

1. Yes
2. No

If the loudness is 100 dB and the frequency is 1 kHz (1000 Hz) can you hear the sound?

1. YES
2. NO

Using the sound meter app measure 5 different sounds. Write them down and there loudness in decibel

In a football stadium the loudness is measured at the centre of the pitch. If 1000 people cheer the loudness is 80 dB. What will the loudness be if 2000 people cheer?

In a football stadium the loudness is measured at the centre of the pitch. If 1000 people cheer the loudness is 80 dB. What will the loudness be if 100.000 people cheer?