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Lesson 8 — Pitch and frequency — Original
Pitch
and
Frequency
1 / 20
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Slide 1:
Tekstslide
Natuurkunde / Scheikunde
Middelbare school
havo, vwo
Leerjaar 2
In deze les zitten
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Pitch
and
Frequency
Slide 1 - Tekstslide
Lesson plan
Quick recap
paragraph 5.5
Checking the homework
Slide 2 - Tekstslide
Learning goals
Describe the link between pitch and frequency
Know the range of hearing of humans and of other animals
Know what is meant by ultrasound
Explain why music instruments have distinct sounds
Slide 3 - Tekstslide
Recap
Slide 4 - Tekstslide
Wavelength
Amplitude
Frequency
Slide 5 - Tekstslide
Wavelength
The length of a wave (in cm, m, km)
Amplitude
The distance from the center of the wave to the highest or lowest point (in cm, m, km)
Frequency
The amount of waves per second (in hertz, Hz)
Slide 6 - Tekstslide
An oscilloscope
Link
Slide 7 - Tekstslide
Amplification
The Amplitude of a wave...
...Determines the loudness of a sound
Slide 8 - Tekstslide
Pitch & frequency
Slide 9 - Tekstslide
Pitch & frequency
Frequency: the amount of waves per second (waves/second)
Expressed in: Hertz (Hz), kilohertz (kHz)
High frequency sound — high pitch
Low frequency sound — low pitch
Slide 10 - Tekstslide
Which wave will create a higher pitch?
Slide 11 - Tekstslide
Pitch & frequency
High frequency sound — short wavelength
Low frequency sound — long wavelength
The Frequency of a sound wave (pitch) does not affect the amplitude (loudness) of a sound wave.
Slide 12 - Tekstslide
Frequency
Amplitude
Pitch
Loudness
Slide 13 - Tekstslide
The audible range
20 Hz
20.000 Hz
Link
Slide 14 - Tekstslide
The audible range
20 Hz
20.000 Hz
All sound frequencies above 20.000 Hz are called
Ultrasound
All sound frequencies below 20 Hz are called
Subsound
Slide 15 - Tekstslide
Hearing in Animals
Slide 16 - Tekstslide
The sound of music
Slide 17 - Tekstslide
Working independently
Do: The worksheet exercises
Slide 18 - Tekstslide
Next lesson — Homework check
Workbook exercises 5.1
Yellow block exercises 5.2
Workbook exercise 5.2
Yellow block exercises 5.3
Workbook exercises 5.4
The decibel worksheet
The worksheet exercises
Slide 19 - Tekstslide
Learning goals
Describe the link between pitch and frequency
Know the range of hearing of humans and of other animals
Know what is meant by ultrasound
Explain why music instruments have distinct sounds
Slide 20 - Tekstslide
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