TTO 1 Chapter 5.3 Sound: Loudness and Decibel

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Slide 1: Slide

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This lesson contains 18 slides, with interactive quizzes and text slides.

Lesson duration is: 45 min

Items in this lesson

Slide 1 - Slide

Slide 2 - Slide

Slide 3 - Slide

Slide 4 - Slide

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

Slide 5 - Open question

Slide 6 - Slide

Slide 7 - Slide

Slide 8 - Slide

Slide 9 - Slide

Slide 10 - Slide

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 question

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 12 - Open question

Slide 13 - Slide

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

Yes

Slide 14 - Quiz

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

YES

Slide 15 - Quiz

Read the remaining of page 99 textbook

Do question page 99 textbook

Do questions page 47 workbook

Check your answers

Slide 16 - Slide

How do we measure sound intensity or loudness

Slide 17 - Open question

Describe some of the risks of loud sounds and how to reduce the risks

Slide 18 - Open question