# TTO 1 Chapter 5.3 Sound: Loudness and Decibel

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Slide 1: Tekstslide
ScienceMiddelbare schoolvwoLeerjaar 1

In deze les zitten 18 slides, met interactieve quizzen en tekstslides.

Lesduur is: 45 min

## Onderdelen in deze les

#### Slide 4 -Tekstslide

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

#### Slide 10 -Tekstslide

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?

#### Slide 11 -Open vraag

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?

#### Slide 13 -Tekstslide

If the loudness is 20 dB and the frequency is 50 Hz can you hear the sound?
A
Yes
B
No

#### Slide 14 -Quizvraag

If the loudness is 100 dB and the frequency is 1 kHz (1000 Hz) can you hear the sound?
A
YES
B
NO

#### Slide 15 -Quizvraag

Do
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